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 1 
 
 2 
 
 3 
 
 1 
 
 2 
 
 3 
 
 4 
 
 5 
 
 6 
 
MICROCOPY RESOIUTION ItST CHAtT 
 
 lANSl and ISO TEST CHART No 2| 
 
 _^ ^jPPUEDJVMGE 
 
 =Sr. '6^-J Eos" Mom Street 
 
 ^TjS "Rochester, Se* Tork U60S 'S 
 
 ^^a^ '^''e) *82 - 0300 - pKone 
 
 ^^ i?!6) 288 - 5969 - r^ 
 
REPORT 
 
 OF THE 
 
 CANADIAN ARCTIC EXPEDITION 
 
 1913-18 
 
 VOLUME IV: BOTANY 
 
 PART A: 
 FRESHWATER ALGAE AND FRESHWATER DIATOMS 
 
 By CHARLES W. LOWE 
 
 SOUTHERN PARTY— 1913-16 
 
 1913 
 
 c;2t 
 V . (:i04 
 
 pt . A 
 
 OTTAWA 
 
 F. A ACLAND 
 
 PRINTER TO THK KIM; S MOST EXCELLENT MAJESTY 
 
 1923 
 
 Iiaucd FeK^iary 20. 1923 
 
Report of the Canadian Arctic Expedition, 1913-18. 
 
 VOMMK I: liKNKKAI. INTK«l)l< THIX. NABBA) VB, KTI'. 
 
 Purt A: NDirnir.RX I'AUTV 
 Purl U: SOI Til I, UN 1 AltlV. 
 
 lOni'*. Hy Vilhjiilinur Sfi'fiiTMKon i /n prrpararion) 
 
 iMi; Hi. I!y Ilululph Martin Anderaon (/« pr«p<ira(M>ii) 
 
 V«»MMK II: M\MMALS AND RIBUH 
 
 Part A: MWM At.S Ol \VI ST UN AlUTU; AMI lUCA. 
 
 Uv liucl..li,li Mi.rtiri An.!.Ts..n. 
 
 Pnrt H: BllUiS i)i W ST, UN MP TIC AM. UICA. 
 
 Ily U. W. Anilcrann unl l". A. Tavcrnor 
 
 iln priparalion). 
 {In prtparation). 
 
 (Uaufi .hit, I '. inlO). 
 . .(/»»ui-( Julu It. t!)l9). 
 
 VO IMK III: IN'SKCTS 
 
 INTRoni'C -ildX. nvCflMnlonllcuitf (I,,uf<l nri-rmher 10. im)- 
 
 Part At (OI.I KMltCI.A Hy lii.t,,. W . '"J;"'''. ■,■■„■ , 
 
 Far' »• Nl lliiU'lT roll) 1N.~K("IS. Hy Nathan F:inki 
 
 Parte: DIITKHA. ,,,,,, 
 
 Criini'-tlir'jt. Uv < Imrlr* I*. A!i>»!ini!(T. 
 
 ^i;:;:^irv;lullLTi";H:^.';n,l'^"i,■i,b.K nyj. r. Manooh (/«««< jui, h. mm. 
 
 Pirt I): .MAI.I.oI'llACA AM) ANol'l.l KA. 
 
 A;'pil;ru'''n/Vi.iOlVm:!::mMi. II. F. Nuttall (/„««iS,p<,m6.r(». I»t». 
 
 Vmm\ uJri*, inoluilin;; Ipi'b . (■.•rniiihycida-, and Buprostida). By J. M. Siviiine. 
 Cnrul.i.hiun.l Silphi.lir. Hy H. C. lull. , . ■■ i • i > 
 
 Coocinini :< . KlaiiTi.l.i-. Clirysomclidiu iiO'l Hbynchophora (eioluding Ipidx). 
 
 Tv..i ,.M*' ' r v/'ir-l>,.rrM„n Ir ('"««' Dercmhtr It. ini»). 
 
 I 'V' ■-* '111-. I •> •» I », . m I in.iii, ,pi f , ;.. « « inta\ 
 
 mMll'TKUV Hy i:.h>:u.l I'. VmDii/fo U.medJutu It. 1919). 
 
 jn'MKNOI'TLliA AM) I'lANT (iAI.I.SJ. 
 
 SaHflips. (Tfntlirr.lin'.,.l.-iii. Hv Alox. I). MacGillivrsy. 
 
 I'nriisitii' IIvinoiioptiT'i. I!y (.'imrlc-i T. Bruci. 
 
 Wasp- iin.l lioi-i. Hy 1. \V. I. S'ii.li-n. . 
 
 I'l" nt C;al|- Hv K. I'..rt<-r IVlt ('"■'«' -Vowmfcer J. / 19). 
 
 Part H: SPIDKR.s, MITKS AM) MMUAPODS. 
 Spi.lcra. By .1. H. I'mcrtun. 
 Mite... I.iyN»'>'r .»',"'•!.-,„ .„,,„.,:. (I..uM.ra«U.I9lt). 
 
 Part K 
 
 Part F: 
 Part fl: 
 
 Part I: 
 Part J: 
 Part K 
 
 Piirt L 
 
 Mvrin.....lH. By U:ilph V. ( li^imhcrlin • • ■ ('"««' ■'•-'v '<• . 
 
 '1!^S^;.^K oi^'iK UiOSlXHN ARCTIC OAST OF ^MKiar.V ^^^^ ^^^,^ 
 
 gi.n1':kal iNiirrx V .■.•;• ■■:::::::::::.::■:::::::■:::. ..ih^uM D.cnnHer . ,«.«,. 
 
 VOI.IME IV: BOTANV 
 
 Part A: FRF.snWATER AI.C.AK AND i; ESIIVVATF.R DIATOMS. By rharlo. W^,^i^«»^_ 
 
 partB:MARiNEAi;f;AE:ByF:s.d;iiin9.'.'.;::::::::::::^':'':'^^:^^----^ 
 
 K"* J^- }■",'; Mn'.'v ."^i"''/! 'ir" M""rHii ::::::.::::::: (/n pr^ pa/uiion : 
 
 PartEiMOs' is. By R. S. WilUains Ussu^d t.h'nar^ H, ,yjl). 
 
 V 01,1 Mi; V; BOTANif 
 
 PArf \-V\-fri\i' riANi-S By .I;ini.'^ M M:i"oun .in.l Thoo. Holm... .Iau.lOclh.r^U.l9VJ. 
 Part B; ci'X! 1 IIUTIONS To Mom'noi.or,y, SVNONVMV 
 
 \ND GEOGUAI'IIICAL DIS- 
 
 Tlill.irioN ')!•■ ARCTIC I'l.A.s'TS. By Thoo. Holm . . . . h.-^U'd FJruty m.inU). 
 
 VI, KOTF.S ON ARCTIC VEGETATION. By Frits Johansen. {In preparalion) 
 
 Part C: GENI: 
 
 VOM ME VI: l'l.»iUES, TUNICATES, ETC. 
 
 Part A- FI-^HES. By F. .Tohaiw-n ^r ' ' "J V*'T'T''.'i'^?V 
 
 p"1b; ASCimANS, ETC. By A. G. Huntsman 'hsu>:l N.v. ,„h., .9. t9J2). 
 
 \Ol.l ^n•. VII: Clll'STA< EA 
 
 Part \- nFCXron CRISTACEANS. Bv Mury J. Ruthl>un . (Wd ^.-ff»«M^, /9/9)- 
 
 lart J. \/\'±- '■'.,., , ,,,.,,, ,i>v Uv A Willi-v (UauedJune 15, tilO). 
 
 IZ\ ^; ?^^,?i^h^^V.^^^^.A^;4;c;::;LB. wiiaon..: "••■'«^;J--^S: 
 
 Zl ?!; ?{Jir/^;^^rv. l^:!/-ui^'o7soME a uctic lXgoons! ■■■■ — "^''■-'■- 
 
 By F. Juhansen. 
 
 'lakes and ponds. 
 
 . {Issued Deei-mber SO, 1921) . 
 
REPORT 
 
 OK THE 
 
 CANADIAN ARCTIC EXPEDITION 
 
 1913-18 
 
 VOLUME IV: BOTANY 
 
 PART A: 
 FRESHWATER ALGAE AND FRESHWATER DIATOMS 
 
 By CHARLES W. LOWE 
 
 SOUTHERN PARTY- 1913-16 
 
 >Ag7i 
 
 ǣȥ 
 
 'W ^f?'^ 
 
 ^,^■^9^*/ 
 
 01 i AWA 
 F. A. ACr.AND 
 
 PiiiMi u t;) thi; kint, s most f.xci i.lkst majestt 
 
 19^ 
 
 luucd February 20, 1923 
 
The Freshwater Altfae of the Canadian Arctic ExpediH«n. 
 
 My ('ii\iir.K.s W. F.owi: 
 
 Mr. 'liu J i:>u;:::':: £":;::■ ^^^^ -^^'•''" • m- ■i^",.,, ..... .. .1,..,.,. , ,,. 
 
 west T<Tritnri.-.>|-,ircast as II 
 
 in ALi 
 
 a, Iroiii thr arct 
 
 COasf. I'll.. ;.|i; 
 
 ~ CXposffl 
 
 io uiTf rcll. , i.il troi 
 
 'iii.inl hailioiir, and 
 
 le nirioiis ot tl 
 
 frotii islaiiils u,..,r H 
 
 "' \i)rth- 
 
 I'lcks, uarrii Ntr.aiiis, Htill ..n,| ri 
 
 '■^ tiiany ilitT.r.iit sjiuat 
 
 it 
 
 Jti -iicli latitii.l.'sas tlm. 
 
 I" arcMc 
 mils a.s pii<<sjli|u 
 
 IS aliiiu^-t iiii|MiM-ilil,. to niak 
 
 ill which th.'s,. sain 
 
 """•'Uwat.T, hik.s..,ii<it,iM,|rap„n,|s 
 
 fictcriniiic which roll 
 
 an .•xainiiiaii 
 
 files lit' walcrlil' 
 
 wvTi' olitaiii.'d. 
 
 l«'c(i<.ns ar- .[y t„ |„. ,,f 
 
 1 -'It th.- tiiii, .,|- c.iiU'cti.m to 
 
 IMK III onsi,]. ral.h' .|nanlitv, an, which 
 8«'()Ufnc.- »!„. '■..Ilrctioiis varic.l wreath 
 
 '^jw.'ial intcr.st 
 
 <i Willi li i)l)tain- 
 
 1 iir.- it.iiiiK tl, fun, „m p,„,r|^. j 
 
 n con- 
 
 mntcri: I w.rc rich in hi.tj 
 
 he III tier fill.. I -vcr.- found 
 ilccavinir iirKaiiic niattcr. 
 
 mic huttl.'s rontaininir hut, little 
 
 1 s|H'ci...s and luimhirs, whil,- a f..u- whid 
 
 to contain only sand part 
 
 ■|"hi' rich.'sr collect 
 
 islan.l. \'.'I'. (l>|;,ti. II., I 
 
 ion Was scciind from 
 
 fmin t 
 
 This 
 
 1 •iciincd tc 
 iflcs and .inr.TOKnizjiblo 
 
 an II 1 1)1)11, i.s swamp at H. rsch.l 
 
 mainland in Ih, H.aufort 
 
 IS a small ish.ml ntuatcd a short d 
 
 national lioundarv at I) 
 
 sea, and ahoiit half 
 
 . IV.T. 
 
 'I'll. 
 
 mar.-ation point and th.' m.>utii of 
 
 istance 
 Way hitwii'ii till iiit.T- 
 
 iippri-xim.itcly 2(»(l feet 
 
 »am|). which is about half a mil 
 
 S.'Cti 
 
 ma\ 
 
 IS a 
 
 will 
 
 Ic from ih 
 
 tl 
 
 .Ma.'k 
 
 ..•nzie 
 
 Icmd pi rtion of 
 
 sea. at an el.-vati.in of 
 
 "K th.. island. The fact that ih.. is| 
 
 on., of th(. manv 
 
 cr(..'ks int(.r- 
 
 'I'l... 1 
 
 Toiint to a larj:.. ..xt.-: t for tl 
 
 pies.'rvc 
 
 low feinperatur.. in Ih 
 
 ill 
 
 collei.tions in alcohol al 
 
 le vari.ly of a. 
 se northern "latilmh 
 
 ind is mii..h visited l,y waterl.- d 
 species „i| iiicr,.. 
 
 ■s m.-iki's 
 
 »ith..r..d. .Meohol, as i.s well k 
 alfiae and, as a conseoiienn.. >i,.. 
 
 IS a ('onse.pience. th.. alitae in tl 
 
 poorly fix..d. Th.' protopla's 
 \; contr..ict..d and the walls ..f 
 
 V desmids h.ul ..n... !..-» n,..;„ 
 
 niosl immedi.it. .|y after th have J 
 ails a t'...ii| fixmn anenl f 
 
 iiown. is hv 110 n 
 
 c.ss.'irv to 
 
 leeti 
 
 |)lasmi.' contents of th 
 
 le Cii||ectii'.:.s, for t 
 
 ■e most part, were 
 
 l<>smids h.ul ev.-n lost their .jrin 
 
 iiany of the <" .-mids col 
 
 le cells w. •«■ found to I 
 
 leir walls had I 
 had alt<.r..i| the coh 
 
 inal shap 
 
 lecoin.. inverted. Ii 
 
 I ma 
 
 inn t., t... fact that 
 
 'urof the sh,.ath and of the c.mt.'nts 
 
 !■ .■ th.' .My.ophyceae the al 
 
 )i' niuch 
 
 I- Some of the 
 
 portions 
 
 ihol 
 
 Tl.K KXAMINAT.O.V .U M ATKUIAL FHO.M IJnArKISI, I'ONDS 
 
 rev..S:r;::t';;sr;L"r^:in;;;Ve.:t:r;;v fr^ y "^ ^'^--' -''■--. 
 
 coll.rt,.d fr,.„. a l.n.ckisi , S at V h r '^.^^^f •;^"' «''="-'»=t'T. In s.|,„p|cs 
 speci.s of algae hut ...ich SM,,.;,. -Alaska, th.-re were not onlv nrmv 
 
 I ther..fore "ic n o 'z ::],";::.;i*r'T:;''H ^ ' ■■ 'v. "'"'^;^'" ''""^'''''-' "'-''^ 
 
 th..<.ceai,amlastoi,ssu;;ie ;'• "1;';. ;t:' I"'""' ^^^allnlty, its n,.arn,.ss to 
 
 kmdiy f„rni.he,i me with'*/;!;: ^iiwii •;:s^r:'''''''« """" '''■■ •'"''''-- 
 (1) ve^;^':,.:;;;:; IZ!^Z£ ;;:;;:;': f^rs "^'""r" '">; *'"■ -'-"tion: 
 
 actual ci.nr.ection with th. st': • le."st ?^ ',' ''V".'' **' T ^""^ '" '''I-'h. *« 
 
 containing water all the ;«:;^•:;.um^^L,a;ed'tr 1^^' ii:;; .ilii^'^^'l ^"^^ 
 490t;9— II ""'I iiiiauii man tiie lUKooiis 
 
■I \ 
 
 Canadian Aniic ExpMiiinn, HUS-IDIS 
 
 or at a sufiioicntly hijih «'levatU)U tu ho out of the r.-acli of the sea, althou«li to 
 Ihis tlicy ))laiiily"o\vc tlioir orifriii. Suiiic of the larciT lakes were (luite fresh 
 anil proliahly of filacial origin, luil others, which must at one time liave had 
 coniieetioii with tlie sea. prolialily contained some, salt or l)rackish water in 
 their dee])er parts altliou^h their surface water was (piite fresh. 
 
 The shallow lagoon iionds owe their water content partly to melted snow 
 but i)rincipally to the inllux at hijih ti(h'. Tiie sandy or gravelly lieacli siirmund- 
 in;: them is saturated with sea water; and the more shallow and smaller of thcni 
 coniiiletely dry out l>y the end of summ- r. The presence of salt in the lajroou 
 ponds is tlnis easily accounted for. The i)onds are frozen solid for nine months 
 of the year and thaw in stimmer at the same time as the ice along the seashore. 
 
 t)f t'S|)( cial interest are two brackish jxinds which belong to the second type 
 mentioned abov.', viz.: (1) a tundra ])onil between a hirge lake and tlie sea at 
 TeUer, .\hiska I Port Clarence bay), and (2) a more open pond situ'tt-d at tlie 
 end of the l>av at Bernard harl)our, N.W'.T. 
 
 The ttmdra pond rei)resents a remnant of the outlet which in earlii r times 
 at high tide connected the large lake nearby with f.rantley harbour i Port f 'larence 
 bay. The bed of this outlet, except for a deep hole which is now the tundra 
 liond, hlled with sand and in the cotuse of time becam ■ overgrown with a -uamj) 
 vegetation. The localitv wa.'^ visited by the expedition f<ir two weeks in .\ugust. 
 I'.llo. and the lu.nd was then (piite free of ice. Its brnckish nature was deter- 
 mined simply by tasting the water. In the collections from the i)onil. excluding 
 diatoms, thc're were 14 species of freshwater algae. 
 
 The large hike, referred to in the previous paragraph, rei)resents a lormer 
 lagoon connected with C.rantley harbour. Its surface ami margin.nl waters were 
 tested and found to be (iiiite fresh, although its deejier jiarts were prob:d)ly 
 brackish. Marine lialoms were foiuid in the deposits from tlu' bottom ot this lake. 
 
 The brackish pond at Bernard harboin- i> situated out of reach ot the sea 
 at an <levation of aiiout 10 feet and about '_>.") ynrds inland from high-tide marks 
 on the beach, ard on a gravel flat. The pond projwr is reprc^euled by a deeper 
 hole, which is S to 1 feet dei'p in the middle and rises rather alimi.tly Id a Inoad 
 l)elt of shallow marginal water not exceeding one fo<it in depth. The bottom < it 
 the hole contain- mud which .smells strongly of sulphurett<-d hydr.>geii. The 
 bottcmi of the shallower margin is composed <<{ light lirowu mud and >l'>"i''> 
 with nianv green thread algae (/w'^ /■()//»)(■/)/)(( crinita and E. nitc^liiinhsK When 
 the melting (vf the pond begins, water is formed on the surface and the shallow 
 marginal water becomes ice-free, whilst the de.'per !)art fover I foot I is .-olid ice 
 (May .'), lOltii, Hv the middle of June i lOUii the pond was comi)letely ice-lrec 
 and had considerablv increased its exi)anse owing to the inflow '>f fresh water 
 produced from the snow which had melted on th ■ tundra slopes behind, 1 li ■■ i)ond 
 still overflowed into a nearbv bav of the sea by nutans of a -mall creek. 1 oward 
 the sectmd week of .lulv (l',M.')), owing to evaporation, the horizontal (•\i)aii--e 
 of the pond ha<l dimiiiisjied, aii<l all that remaine.l of tlu'overflow were a lew small 
 waterholes in the creek bed. .V mouth later, this evaporation lia<l inogressed 
 still further and the jxiiid was i)ractically limited to the deei)er hole m the cintre, 
 the rest being flats and swami)s with a Canx sKhspntlincra vegetation, .\t the 
 end of t<ept<'ml)er (IDloi, the ice had become more than 1 foot thick. At tins 
 time, therefore, the marginal water was completely frozen. The teinperature of 
 the water beneath the ice was found to be 3I)'_'° V. at -> p,ni, September 23, lOlo 
 latiiiospheric temperature 2(1-8° F, I. • , . j 
 
 It is an interesting fact that, in spite of the hmiti'd size ol these two ponrts 
 (Teller. Alaskii. and B«Mmird harbour) and of the great intlux of melting tresh 
 water in the earlv summer, the water in the ponds keeps distinctly brackish. 
 Mr. Jolianscn gives the following reason-^ for this: ! 1) the ponds .actually repre- 
 sent navs of the sea, isolated by an elevation of the beach line in comparatively 
 recent times, so that the surrounding soil is impregnated more or less with saline 
 matter; and (2) in the spring a large volume of melting water spreads out over 
 
Fiishinilir Al(j(w 
 
 Colic - ' 
 
 1'-.'>I. wat.T nhiel. ,.v.,,on,(..s in ';;„;; rZ"'l""''~ "'■"""'• ^""' '♦ i'^ fl'i« 
 comv,„rat,..l salinr h.y.Ts :.s J, a ' ic. , .' . v '/'y'"^ ""; 'l<-Por a,.,l .....rc 
 
 except .lurinK tlu" inHux of tl e st • m. It, v V ";' '■"■^"''^♦i<'" <'f the water 
 durn,« .May and earlv June w en ,i i'.'''^^'''" "■""' ""/■^''^'' «<>"rces. In.t 
 eontanis th.. nu.re saline and hea vi , w ' f ' '"""'' '"' ''•'""•'• i^^^'f ^vhieh 
 meltniK is a Rra.lual process. J3 v h,, ti e t h . ,' ";"' "' ''T^ "^ subsequent 
 or a thorouKh mixing of the w,Ver 1 er . t' "V""',' '^•■'^""'••''•1'' (»«' ice) 
 
 fr.'shly nielte,! wafer and tlier,.', • ., " » .tli<' ix.n.l, there is no influx of 
 
 ^unnn,.r, whilst ,1,,. lighter a d r. 1, ^'\'''' ' '" ''""'"•'■ '">'"''--^ ''"""g the 
 •>vaponaion. The fr.sh water ,• 1^^. J ^ '•^'f' '"><''-^ »'■<" -^uhject to rapid 
 '^^••.'""...■d at th,. I...Kinnni of t ;"*:; :^''';'''' "' ;'"!:'"«''"• -"'"""t, the first 
 .^ahne water freezes only a the tem, e t' re 1 ""^ '■'':■. '"' ''''•'J'^''' ""<' '»«re 
 The brackish ponds i„ , '*^'"lY;'t» <' 1"^^<■I> with the advaiuv of winter 
 ^•i^'t<,,ns is dee- i.|i;t:;:,,r- -;-;,'-!, -'"aM flora which, exelndin, 
 include both freshwater and uL^m Un^!^ c!^ ■^'''^''"^- ^^'"•^l' ^''*' Plentiful, 
 Co,mnnu,„ are very iunner,.u m b,^^t 1, ds r'"" ''"""' "^ ^'''^"'■^■<'-'''" und 
 water, marine or brackish fonns bnnl; In.kilown '" *''™''" ''''' ''''^"'^^y '■'■-^'»- 
 
 fatiSTInu in,:?'^\t,r;v:;;rin'Tr'V;i "^"'"f :^' ^ ''-^ - l-i^atlon in 
 few individuiN f.uai h^.u , ? ••''^''^'. f'""'J't"'n when co!!ePt«l (); 1- a 
 
 »'een dead before the^-'^r;,;;:!::;:'::^ ^^^^Lalh:"''""''^'^ ^'"'* ♦''">■ "'-^ have 
 wa I , which was distinctly Cack h wlnn tS^ V"' ^-""'^^t'-d from 
 
 "1 ' liese poiHls are listed lielow "•''• ■■ '"' f'"''^''" '""r algae found 
 
6a 
 
 CdiKiflitiii. Arctic Kx/Hriitio):. 19t3-19tS 
 
 List ok Fhesiiwatku Aloak foim) in liiiACKisn 
 
 PONDS. 
 
 Teller, Alaska. 
 
 ( 'hroocdccus Itirgidus 
 Kudiniiiu tidinnx 
 I'cdiaxtruiii lUiniiDiuui 
 
 MirroKpora sp? (frasiiiii'iits) 
 Spirofiyra injlatn ? (no .^iiores) 
 
 Bernard harbour, N.W.T. 
 
 Pcdinstmin Bonjanidn 
 I'((U(istnim iritcfp-iiiii 
 Juitiroiiiorjilid uif('sliiiiili:< 
 Vlotliiij: iuriiihilis 
 
 Closieriiiin striiild/iim 
 ('os)iiarium (jraniilnin 
 Cut<)n(irium punrtulatum 
 
 Ocdogoniuin sp? (frajiniont.s 
 
 ( Oniiiariuni (jranntuin 
 Co.-'marivm pvnctuldluiii 
 ('<>s)iinrirnn Ininille var. ntn'olnhini 
 CofiNurivni rudlosu/n (one only) 
 SIdura.struiii pniirtiildliim 
 Oedogofiiinii sp'! (t'raKniei.ts) 
 liulbocliaitc s))? 
 Ophiocvlium majiis 
 
 In ad(liti(.n to tl.es<. numerous iliatoins were found includinn Kpilhrmia 
 txmjidd, L. gibhd, A. .So,-,j-, sp.'eies of Cywhrlln, Kuiiolid. Xaricuh,, vie. 
 
 ,\. ^'M^''"" "" '•'"'"''.••''••'♦'<.'" "f t''<' l'"-"'! cliniatie .•nul peoKrai-hie factors, I think 
 that the exi)lanation of the presence of thrse .hstiiictlv freshwater phnits in 
 water which is l)rackish to the taste is that the p.Muls contain two distinct floras 
 which lounsh at dif?<>rent times .luring the short summer season :/ 1^.'^' 
 liora ot sreen alsac and freshwater diatoms which flourish in the earlier part 
 ol the s(.ason, and a marine diatoniaceous flora which flourishes in the latter 
 part of the season. 
 
 The freshwater flora becomes active with the advent of summer The 
 fresh water melted on the slopes further inland, ,,rol.ahlv fiowiuK throufih bogs 
 or pools of fresh wat^r, would brin^ freshwater al^^.e to the brackish pon.ls whefe 
 the surface ice would be begmnintj to melt. The resting stages ('f alir.e left 
 near the margin of the pond by ( vaporation the j^revious vear, would becin 
 active life again as last as the rising water cover.-d them. Tlu-se ,,lants and 
 those brought in by the in lux of fresh water, woul.l flourish during the earlier 
 part o the summer. By the middle of June, when all th.- ice of the ]iond had 
 melted a brackish or marine flora would become active ami remain so until 
 arrested by the aiiproach ot winter. 
 
 The evaporation of the surface waters would leave manv freshwater algae 
 stranded, whilst others would cease activity under the influence of the slowlv 
 increasing salinity ot the water. The stranded plants, in most instances, would 
 assume or form some r.'sting .state which would enable them to surviv,. the 
 adverse conditions of winter and take up active life again th.- following v,„r 
 
 Many of these tyjiical freshwat<-r forms must be suljjected to some .>xtert 
 to brackish conditions and yet they survive. Probably iiLunv can exist in slight y 
 brackish water, with a slightly retard<.d metabolism, as long .'is th(> .season lasts 
 As the salinity incre;ises, some may be indued to develop si.ores and rest until 
 ndivld^ed, r ^^f' :^'^\'r%*''« ^"'?«"-">R ^U'-'me--- .I.KlKing by the number o 
 
 to,ma,nim punctnldtum, can adai)t themselves to a nearly normal existence 
 
 '^ven in parts of these ponds where the water is distinctlv" brackish EvM-ri- 
 
 mcntai observations under natural conditions would be of great value if carried 
 
 out; |,ut, unfortunately, laI)oratories cannot be established readily in arctic 
 
 w * T lI 1 1 J I lf$ , 
 
Freshwater Algae 
 Calcaukoi.s Deposits formed by Ai.oae. 
 
 7a 
 
 crcc.i^r"StlJ;;:rr'i.iS;s "T :: nu^h.. ..r ,„.,,hios f,.«,„ ,. warn. 
 
 are almos 'J^wZVltlTT 'XV' ^'■'r'''^ nnd th,. ...nhe.ld.d al«ae 
 
 nrP nM. /? I '."''"^."1*'<^- • '•I'Kions. yet, as these new ol.servatinus slu.w thev 
 r«c,fri ?•..'«' "V'^^"^", .'V^''"*'^'« ^^'it^''" tl.e arctic rircle. Cosn^nmn^ 
 Germanv a d the"w r".' "^'""^to has been recorded only from ICnftland 
 
 nffel Lf 'I'*r''''''"i '"':' ^•-"^'''^'^^' y*^* these and some oth.Ts with erv 
 ™m ed A nln." ''r^''"''^'^' '"^'T '"•'•'^ f«""'' '" tlu. n,li..ctions I ha "e 
 rom AlaskAn r " 1 'T'""' '"'''"''"« "'•'^"y ^P'^^*^"'^ "^ ■^'"■r'r^'^rius. known 
 
 has he™ n.id n t h V ]^'''\''''''- »1' to the present time very little attention 
 
 fin n,?.r?. .' freshwater alfiae of the Dominion eith.T in arctic redon- 
 
 or an, rent rT^^'^'l'-'^-'"'^'- J '"■''"'■■ ''"^'^ ""^y «h'»"- tl'-t n.anv species. Tare 
 
 supS ' '" "" '""' '"'' ''"■ ■""■■" ^'"''''"^^' -'i^fi'-^tod-than hitherto 
 
 The J^-llnwinR is a list of all species of Myxophyceae an.l Chloropfavceae 
 e istriiition' nf r"- ^^'^"»»P'"'yi»S this lis. are six eolumns which indicate 
 r nn/l "* , ^l"''*" iilBie as known from records made in Alaska arctic 
 SW .7'f "' ■' •' the expciition. Greenland, th,. Faeroe islan.Is, the 'u Hed 
 Th ! , ■^T"';^ ''^'- "■^•^■e of Alaska, and Cana.la ,.x,.lusive of the arc h^ 
 m de v'"" ^u ^ f,»^'''\^';^^l»^iv<3 of the arctic contains ,nanv new reco d 
 in.ide by myself. Ihese I hope to discuss in another conmiunici.tion. 
 
 The followinK symbols are enii)loyed : 
 
 + : new record. 
 
 + : previously reconied. 
 - : not recorded. 
 
 *: an oriKinal record for Canada ."xclusive of the arctic not hitherto 
 I)ublished. 
 
 t: identical in form with oritriual tyi)e. 
 
 v: a variety of the species. 
 
 f : a form of the species. 
 
 *v: a variety of the speci.'s hitherto not recorded for Canada. 
 
Canadian Arctic ExpaHlloii, I'tis- 
 
 inis 
 
 Alaska. 
 
 Arctic 
 t'nnadn 
 vi.silud 
 liy tlie 
 
 i\pe- 
 ilition. 
 
 Green- 
 land. 
 
 Faeroes. 
 
 MYXOPHYl EAE. 
 
 < occogonrae. 
 
 Chroiiroccus timnelicus 
 
 mairococcus 
 
 pallidua 
 
 lurgidus 
 
 Gloeocapsa manma.. 
 
 rupcitria 
 
 Aiihmocapsa etackiata 
 
 Apkunotliect ianccloT 
 
 'yficrocyitia aeruginosa. 
 
 Gomphoaphaeria aponiaa 
 
 Coeloaphaerium Kiitaingianum . 
 
 .Veriamcpeaia glauca 
 
 Unuimima 
 
 t'nitwl 
 States 
 
 exclusivo 
 of 
 
 Alaska. 
 
 f'unada 
 
 ciclusive 
 
 of 
 
 the 
 
 arctic. 
 
 Hormogonr 
 
 Oadltaloria tenuis. 
 
 Xnatoc a immune 
 
 iphaericum.. 
 
 Anabaena cclenula 
 
 tariahitii, 
 
 Scylnnema cruataceum 
 
 miralnle 
 
 Tolijroihrii lanala 
 
 (cnui.-i 
 
 ffapaluiiphon funlinalin. 
 Sligonemo informe 
 lubruum. 
 
 octllatum 
 
 Calothrix jmt ictina 
 
 Rinilarin Imeulis 
 
 + 
 
 + 
 
 + 
 
 + 
 
 
 + 
 
 + 
 
 I + 
 
 + 
 
 
 + 
 
 ! + 
 
 — 
 
 + 
 
 — 
 
 + 
 
 — 
 
 + 
 
 — 
 
 + 
 
 + 
 
 + 
 
 — 
 
 + 
 
 
 + 
 
 + 
 
 + 
 
 + 
 
 + 
 
 + 
 
 + 
 
 + 1 
 
 + 
 
 + i 
 
 + 
 
 
 + 
 
 + 
 
 _ 
 
 + 
 
 _ 
 
 + 
 
 _ 
 
 + i 
 
 _ 
 
 + I 
 
 — 
 
 — 
 
 + 
 
 + 
 
 — 
 
 -r , 
 
 - 
 
 + 
 + 
 
 + 
 
 + 
 + 
 
 + 
 
 + 
 
 CHI.OiiMl'HVcK.u:. 
 
 Ounium jiectcnili' 
 
 h'.uilonna ihmau.-.. 
 
 y'lltiix nurcHi 
 
 (iloeo(!i.sf,K infu.Hiiiiiiini 
 
 Vi,cy.lli.i soliliiriii . ' \ 
 
 ■^'ephrccylium nhrsui/i . , ...'.....' 
 
 TelraMrun cnormt " ' 
 
 •'>elimiifrum iirnminaluiii 
 
 •'^rcihd..^mu!< itinticulatun 
 
 "ht. ,uus 
 
 'juadricauUti . .. 
 
 Crucioenin rirlnni/ularis ]" 
 
 Coeiaslriiin nuircimrum 
 
 relirulalum 
 
 Pediastrum limyanum 
 
 var.grtinulnlum. 
 
 glimdulifiTum 
 
 integrum 
 
 Teiras 
 
 Vaurlteria terreilris 
 
 Claduphurn ftaeta 
 
 Rr.tzocl.iuum 11 eruglyiihicum 
 
 jp..„ . var. /orfuoeam.i 
 
 e^fietoniorphii crinita 
 
 + 
 + 
 + 
 + 
 
 + 
 + 
 + 
 
 I + 
 + 
 
 I + 
 I + 
 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 
 + 
 
 4- 
 
 + 
 + 
 + 
 + 
 
 + 
 
 4- 
 + 
 
 + 
 
 * 
 
 + 
 + 
 
 + 
 
 + 
 
 + 
 
 f 
 
 — 
 
 4- 
 
 + 
 
 + 
 
 ~ 
 
 — 
 
 -L. 
 
 + 
 
 — 
 
 
 -t- 
 
 4- 
 
 + 
 
 -f- 
 
 + 
 
 ■f 
 
 -t- 
 
 + 
 
 -t J 
 
 + 
 
 - 
 
 + 
 
 + ; 
 
 + 
 
 + 
 
 + 
 + 
 
elusive 
 of 
 the 
 irctic. 
 
 Freshwater Algae 
 
 Oa 
 
 Alaska. 
 
 rHLOUOPHV( KAK-Continuofl. 
 
 Enieromoiphti intntinalu 
 
 Piasicla triaj.a 
 
 Schizoijonium murale. 
 
 Uloihru tcnernma 
 
 " vaTiahili.i 
 
 MicTospora sUiQm.ium ... 
 
 Draparnaldia ghmcTutj 
 
 Zygnema aiellinum.. 
 Sphofjyra infiala ...... 
 
 " insignis 
 
 Cylindnicystis crna.^a 
 
 Peniurn auciftruyn . 
 
 marganlnctum 
 
 spirt titriolatum 
 
 Cloaierium t'ornu 
 
 " Uinnne. . 
 
 didymudm uni 
 
 var. striutum.. 
 
 '* Jtnntri 
 
 " nioniliferum . 
 
 " parrulum 
 
 tostralmn 
 
 selaceum 
 
 f>lriolatUTn . . 
 
 " Venus 
 
 Pleurotat:niutn Trabeculo f. dainta 
 
 irunnttum . , 
 
 Euastrum antatuni 
 
 hidvniiitum 
 
 " binalc 
 
 denticufatum 
 
 " duhium. 
 
 " fti(jiinH 
 
 oblvngum. . . 
 
 o<cidentij(e 
 
 Micrasieriai' a):iCuhUa 
 
 var. biaehyptcni. 
 Cosmarium n^i.ha'rQsf.orum . 
 
 v;ir. "iirigosum 
 
 I'inuni 
 
 /iifryti.i 
 
 (f uspcr.sutn. ... 
 
 t'onlrartitm var. ellipsolJeum.. 
 
 co6latum 
 
 + 
 + 
 + 
 
 + 
 + 
 
 Arctic 
 ( anada 
 visited 
 by the 
 expe- 
 dition. 
 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 
 Green- 
 land. 
 
 I'nited 
 
 Situtes 
 exciu.sive 
 
 i "' 
 I Alaska. 
 
 Canada 
 
 exclusive 
 
 of 
 
 the 
 
 arctic. 
 
 + 
 
 
 + 
 
 : 
 
 + 
 
 — 
 
 + 
 
 -i- 
 
 — 
 
 -t- 
 
 -i~ 
 
 + 
 
 — 
 
 + 1 
 
 I - 
 
 f I 
 
 + 
 + 
 + 
 + 
 
 + 
 
 I 
 
 crenaium 
 
 Cui'umis 
 
 + 
 + 
 - 
 
 + 
 
 1 'ucurhita var. atluimlum . . 
 rurlinim var. Xiiidstedlianuni 
 uMiiisum.. 
 
 tjritnatum 
 
 Hh miner i 
 
 
 U'nmiensc var. integrum. . 
 
 huiiiilc var. striatum 
 
 iminrssulum.. 
 
 + 
 + 
 
 incotiftpiatuni . . 
 miiii/iirilalum 
 
 + 
 
 Pokornyanum 
 
 pi.nclulalum 
 
 + 
 
 var. suhputHtul- 
 atum 
 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 
 + 
 + 
 
 
10 a 
 
 Canadian Arctic Expedition, 1913— WIS 
 
 Cni.OUOPHYCKAK— C'onrlatJtMl. 
 
 *i'csmaiium i/yumneum . 
 ' qnaihatum. . 
 
 Alaska. 
 
 Green- 
 land. 
 
 rnercH- 
 
 radwsum 
 
 *' Tfttangulare 
 
 " renifnrnte 
 
 " f>pfcio6um 
 
 " " var. biforme — ■ ■ 
 
 '* / Irjan&somi 
 
 " suhco&tdium 
 
 " su\tcrenatur.\ . . . 
 
 " Suh( ucumis 
 
 " aibcjcaratum 
 
 " " var. nrdinatum . .' 
 
 " su}>tumulHin var. KUht^n '■ 
 
 " tfiniofththalmum 
 
 '* traihyplevrum j 
 
 " 7'(.f ;.i«ii. 
 
 *' wululatum 
 
 Xonihiaium artilopaeum 
 
 " nistdtum vat. hitubercutatvm] 
 
 " fabciculatum — ' 
 
 Arrhrcde^mus lncui< var. Ralfsii forinn 
 
 iiubhejaQona 
 
 ■Staut antrum Ancula 
 
 '* B>0f'f s' nil. . ... 
 
 " hicvi&iinum 
 
 " " var. inervie — 
 
 " denilculatum 
 
 " fuTciuerum 
 
 " hcj^acerum 
 
 " liolmtx 
 
 " lunolum 
 
 " " var. planctonicum . 
 
 " vie^jacantkum 
 
 *' mm icotum 
 
 *' mutitum 
 
 *' orbicuht e . . . 
 
 " pachyrhynchum 
 
 " piiriuioium 
 
 " polymorphuTH 
 
 " polytrichum . ■ ■ 
 
 " piinctulatum ■ 
 
 *' Rf^nsrhii 
 
 " sedgcrum 
 
 " vestitum 
 
 Sphaeruzosinn ejcaratum 
 
 Spondyhisium planum 
 
 Hyalciheca disstliens 
 
 *' muco"\. 
 
 Bulhochaete sp. . 
 
 OedoQonium nodu^osum. 
 
 " paludosum var. ameriLanum 
 
 Bolryococcus liraunii 
 
 Ophiocylium mnjus 
 
 Tribonttmn hombyrinfi 
 
 " " var. tenuis 
 
 + 
 
 -i- 
 
 
 tnitcd 
 
 Cauda 
 
 States 
 
 excluiive 
 
 ciclunive 
 
 of 
 
 of 
 
 the 
 
 Alaska. 
 
 arctir. 
 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 + 
 + 
 
 + 
 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 
 + 
 + 
 + 
 + 
 + 
 + 
 + 
 
 4- 
 
 + 
 + 
 
 + 
 
 I f 
 i + 
 
Fre-ihu-itlir Algnc 
 
 II A 
 
 ida 
 
 sive 
 
 A Klitiif' .'it the talilc shows at once how little i^ kimwn of ( 'aiKidi.ui I'lcsli- 
 watcr Al(j!U'. Many nf tho species are reeorded as liciiiu fdiiinl in ("atiada for 
 the first time. My work has heeti handicapped to somr extent l)v imperfect 
 libnuy facilities, ('ntain papers dealinjr with the arctic flora, whith 1 wished 
 to consult. I wa> iinalile to olitain. Hence it is possiMc tli.at a few rcconls have 
 been omitted from the lahle. 
 
 There .are recorcled in the detailed account which follows: 28 species of 
 jMyxophy<cac from 17 cenera: 1:57 species of ( lilorophyccae representinn H 
 genera «'n.-<„iiirlinn oS species, SltiiiraslrKni 22 species); and I'haeophyeeae and 
 Rhodophyceae with 1 (letius and 1 species from each uroiip, makinn a total of 
 60 Renera and KIT species. There are two new vsuieties, one new si)ecies, and 
 one speciew traiis|'erre(l from the Keniis CDSwurhuii to the nenus SlduniKlriiiK. 
 
 In eoncliidinn the general pari of this report I wish to express my indobted- 
 n.r.s to Professor A. 11. Heninald Muller for eiu'ouranement and iiianv useful 
 sun«esti()ns; *u Dr. Tlieodor Holm for the Latin descriptions of new varieties 
 and species; to Professor \V. A. Selchell for idenlilication of Sciilonniin rriinlu- 
 ciurn Ajj.; to Mr. Frits .lohaiisen for much information rejjardinj; tiie eollectinfj 
 of the material and the localities from which the sample- were taken, ;ind t'or 
 the loan of various publication^; and, especi.ally, to the late l>rofe<sor ('■. S. 
 West of IJirmiii^ham. Knulaiid. not only for valuable help and ailvice during 
 tiie earlier stajie- of the invest ifiat ions recorded here, but also for the training 
 and stimulating inliueiKc which I received from him durintj a number of years 
 \yhich I was privilejred to spi>nd in his laboratory. P,-ofe«sor West was" pur- 
 ticularly interested in antic freshwater algae and was de><irous of promoting 
 the investigation of Canadian algae in general. His untimely death in the 
 summer of 19i«» was a great loss to the botiinical world in generaj, and especially 
 to Canada, whose fieslnvaters are still practically unexplored. 
 
 The following works were con.sulted n-garding the distribution ;ind for 
 other purposes: — 
 
 Borgesen— Freshwater Algae of the Faeroes. 
 
 Borgesen and ( Menfcld— The Phytoplankton of the Faeroes. 
 
 Collins— The C.reen Algae of North America. 
 
 Cooke —British Desmids. 
 
 Cooke British Freshwater Algae. 
 
 Ralfs— The British Desmidieac. 
 
 Saut"!ers— The Freshwater Algae of the Han imaii Alaska Expedition. 
 
 Tildeu— Minnesota Algae (Myxoithyce.ae). 
 
 West — British Desmidiaceae. 
 
 Wollc— Desmids of the United .Stafi >. 
 
 Wolle — Freshwater Algae of the Unite(i .States. 
 
 Also "Meddelel.ser om Gronland." various volumes, and a large number 
 of small works by W. West, G. S. West, Borgesen and other workers. 
 
 ■3 
 
 'f 
 
12 a 
 
 I Ist of Species. 
 
 •\'V.\<)|'llV(j.;vj 
 
 <'<>< CO(i(i\|.;AK, 
 
 <:hr()C)C(>c(:aceak. 
 
 f..^ t'hroococcus Xuk 
 
 Chroococcus Ilmnetlcus L.,,,,,, 
 
 -^ »"■' "■"■-•" «":.t^t:^ff;':;';r,', fr ' '''''F' '"a."3 
 
 Chroococcus „,acrococcus (Kr.tz.) lUU^n. 
 1 Ills was found yloniT uit I. v . 
 
 Chroococcus pallldus Xur. 
 
 
 Chroococcus turgidus (Kat^.) x,^ 
 
 ,,, ^loeocapsa Kiitz 
 
 Oloeocapsa magma (M.,-|,.) Kju,. 
 
 eo„e...: ^'- -'>■ '-.■ i...n .,..„ „. ,.,„ .1-;-;- -,ij!>-;;.;^;n.. 
 
 Gloeocapsa rupestris KiUz. 
 
 ommnne at Bcniarci 
 
 . . -^Phanocapsa Xie 
 
 Aphanocapsa elachisfa u i <■ 
 
 .... . I •'•i-nista \\. and C. S. W(>,i 
 
 '» arct... regions and . , ,'/ ;t , ' ' '"■''■"r.' ^f ''^^ ""' been pnnt, J" i^'; .1 /^^ 
 quaiUity i„ some n.ud f'.ln '.'.'' ->""' -^'""nca. It r™.pr n n 
 
Aphanothece saxindor Naj? 
 < )rilv oiii' Mil 
 
 Freiihwairr Algm- 
 Aphanothece Xajf. 
 
 i;{ A 
 
 'niy (,iir Miiall immilnr mass of this spcWcs wa^ oIi-.tvp,! r.AU I " ' I 
 MM... It h,.> nut 1,,...,, I, ,.,„,|,.,1 pn.vimisly for ili,. ^i,-,.,,,. ,,mo„s of AnuTinl. 
 
 10 
 
 Microcystis Kiitz. 
 Microcystis aeruginosa Imp.. iri„tln:,n>.ti. .un.jin,,.., -Ku.x.) ll..„f,.vl 
 riils tvpical pluiikloii u\\i:\ i~ coiiunoii in the I'lii),.,! ^t..f<. , r \ 
 
 (ioniphosphaeria Kiitz. 
 Gomphosphaeria aponlna Kiiiz. 
 
 (I'lalc IV, fl^r. IS, 
 
 rccorrlcl from arcli,- Anu-rira. '"" '"'''" •"■'•M'"1>1.v 
 
 Coelosphatfrium Iviiiz. 
 Coelosphaerium Kiitzinf^ianum \:ip 
 
 Merjsnioppdia .Mcycn. 
 Merismopedia ftlauca fKlinnh.) \u^r 
 
 Merismopedia tenuissima l.i tnni 
 
 No pi-ovtous records havo l,..,, ,na.l.. lor ,h.. last two V^^. for a;:.n '' A,;:!;-:;!: 
 
 OSCILLATORIACEAE. 
 
 r=^iii . • . Oscillatoria \aiitli. 
 
 Oscillatona tenuis Airardh 
 
 poi.Zi!i,,;;;;x£iS''LI;:;;:;;,;;ri;:i,;^t.;::;;" ' '■•"'""»- 
 
 HoKMOGONKAK. 
 
 NOSTOCACEAE. 
 
 M„„* Nostoc \'aii(ii. 
 
 JNostoc commune \ audi. 
 
 Dh, J*.','r T^n '■'•'■>: l''<'"''f!'l ",' '•><■ l'""">" of tu.i.lra ponds and in n.ai.v other 
 
 A. 11 .1. n, t!,. -toinath ol .i ti.^h laKri, Jiuu. 2U, I'Jir,, at Bernard harhour. 
 Nostoc sphaerlcum A audi. 
 sa.„^i^rri^.:::;:d";:Lte .;;"^' '"^^"-^ ^'^--^-^ and cdy occurred in a few 
 
14 a 
 
 CanaiUnn Arclir Kxi>eiUlion, 101.1-191'^ 
 
 Anahaena Hory. 
 Anabaena catenula (Kiii/..) Monict nnd I'litliuiit 
 
 This Hijcfius wast found only in thi- iniit«'ri«l froiii th'- H i ppuria av/amp, 
 HiTsilicl island. It was not coniiiion. 
 
 Anabaena variabilis Kiitz. 
 
 This species occurn-d in the lake at Teller, and in tlir IiIk Iiikc at H<rnard 
 liarbour. It was fairly freciucnt. 
 
 SCYTONEMACEAE. 
 Scytonema Axardh. 
 Scytonema crusiaceum Ae. 
 
 This pi lilt was found in small fraRnirnts with Xostoc commune in a tundra 
 pond at Bernard harhour. This, I believe, \s the first arctic record. 
 
 Scytonema mirabile (Dillw.) Borne', 
 
 Occasional fraRinents of this alga were found in a collection of plankton 
 and bottom deposits from Teller. 
 
 Tolypothrix Kiitz. 
 
 Tolypothrix lanata (Des.) Wartmann 
 
 This alga was taken from the bottom of a melted tundra pond, Collinson 
 point, June 4, 1914. 
 
 Tolypothrix tenuis Kiitz. 
 
 A few fragments were obtained from a tundra pond at Teller. 
 
 STIGONEMACEAE. 
 Hapalosiphon Xilg. 
 Hapalosiphon fontinali'. (Ag.) Bornet 
 
 This also occurred as a few small fragments from tlw hnuira pond at Teller. 
 
 Stigonema Aganlh. 
 Stigonema informe Kutz. 
 
 This occurred only in a timdia pond at Collinson point. Not common. 
 
 Stigonema lubricum (Dillw.) Kiitz. 
 
 The Hippuris swamp at Herschel island was the only locality from which 
 this was obtained. It was comparatively rare. 
 
 Stigonema ocellatum (Dillw.) Thur. 
 
 -; alga was found in a lagoon just west of Martin point, and at Collinson 
 pc Common. 
 
 RIVULARIACEAE. 
 
 Calothrix Agardh. 
 calothrix parietins g.) Thur. 
 
 This alga was tli minant species in calcareous incrustations on pebbles 
 in a creek containing warm water coming from hoc springs and running into 
 
 the Sadlerochit river. 
 
 Rivularia (I{oth) Aeordh. 
 
 Rivularia borealis Richt. 
 
 This species was obtained in a lagoon just west of Martin point, July, 1914. 
 Not abundant. 
 
Frenhwti r Aloae i;, ^ 
 
 ISOKONTAK. 
 
 VOLVOCACEAE. 
 
 _ , . ,. Gonium Mall. 
 
 Gonium pectorale Miill. 
 
 This alKu WHS f.,u,„l only i„ th.. hi^ lak.- at nor..ar<l h..irl„mr an.l in s„mll 
 numtHT.s. \..ry f.w of Mw,,- w.-r,- p.-rfrrt lf,.,vl|.,l .v,|„„„.s, most of th. „ L « 
 
 maturity. It is tairly ,.l..ntif„l ,„ sum., parts of adu, l.,.t it is tiol .•oi.un n 
 roKionr "■"" '■""'^'"""^ '^'"^ '""^ ""^ "Pf'^'"- »« '- «''"-'--llv f'"'".! in an^tic 
 
 p . , , . , Eudorina lilireni). 
 
 Eudorina elegans IJiniil). 
 
 This was the only ,„finlH.r of ih. Volvoracoao which was ronnr.m in akal 
 rooctions. It ..jTurr..! .n th- ph.nkton an.l othrr ..olloction. fro-,, tho lak.MU 
 1 . and fron, I ernard harhour It was also pr.srnt in the i.rackish p nd a 
 1 Ilor and .n collections fro.n the //,>/>»r,-.s swan.p at Hcrschd islan , "rom 
 Chantry Lsland, and from Cape Hathurst. 
 
 „ , ,„ Volvox (L.) EUvc-K 
 
 Volvox aureus Eh-cnb. 
 
 Only one .specimen of this beautiful d^a was observed. It was in the 
 matennl trom the hppnt's swamp at Her.schel island. Diameter of coenol.ium 
 ScrS's!''" ^""^' ""'**'^'""1"'' andoogonia absent. It is not con.mon i? 
 
 PALMELLACEAE. 
 Gloeocystis Niig. 
 
 Gloeocystis infusionum fSchrank) W. & (J. S. West (Plate HI, fi^. ",) 
 
 This alRa was by no means common, only a few cells l,,.inK foumi in anv 
 on. collec .on. It occurred u. the big lake at Hernard harbour at Ch ,.t"v 
 .slam, and at Cape Bathurst. I ..annot find any previous record lor the North 
 
 Oocystis soiitaria Wittr. 
 
 AUTOSPOR.\CEAE. 
 Oocystis Niig. 
 
 ^o,, J"!"'' T^w *'^? ?"'-^' ^'■'?5'.'^■^ °^ ^'''■■' *?^""^ '1"'^ occurred in plankton and bottom 
 Berna;d harliou.? "' ''""■ '' ""'^ "^'^^ ""''''"' '" "'"^'' '^^« 1-'tity ^ 
 
 Nephrocytium Nat;. 
 Nephrocytium obesum W. West (Piate IV, fig. 17) 
 
 and for tile arctio.'' ' " ' '' ''"""''' ^"^ ^*^' ^'"'^"«''> continent 
 
 Tetraedron Kiitz. 
 
 Tetraedron enorme (Ralfs) Hansg. 
 
 This species appeared in small numbers in the materi-I " t-o Hlnnurii, 
 
 swarap at Herschel island and was not observed ehewh. .as not been 
 
 previously recorded from the arctic regions of America 
 
Itt 
 
 Cnnnihan .Xntir Hf/itililton, l!>lii IQIH 
 
 Selenastrum HtiiiMli 
 SelenaHtrum ncuniinatum I.aiKili. 
 
 (rialc HI. fiK. :i) 
 
 'I'hi-' >.|MM'ir!< iiirllllrd only in a rDllcitiiiti iif IxntDttl (|i'pu-il- :ini| |i|;inktitti 
 Irom Tt'll" I, Aiiitiist •',, |<,)i;i. 
 
 Scenedvsmus Mcvm. 
 
 ScenedeHmuH denticulatUH l.iiKirh. 
 
 'I'hi'' -pi'cicH vv:i- llii' rnii'st <if the ;{ctnis. It \va- fo'.nil (inly in --111:1 II (luitntity 
 Ml till' lioiiuin ili'po^it collTtitiiis from till' lake at 'I'l'lU'r. 
 
 Sceniilesmus oblkiu)' Turii > liiiiz. 
 
 'I'liis ^prcii'', ;ili liiiiij:li M"! coniMion. ui'ciii'ifil ii' more loiviliiii- llian the 
 I)ri'(HM|in(i spt'cii's. |l (ni'urrctl in the lanoon lakf at Teller, in the planklun at 
 Hernaid liarKoiir. ainl in the ////i/d/nx swamp at Iler^chel islanii. 'I'lie haih/- 
 hniicriiM -.(aire wa-^ Imiml with the OjihrijilniiH m:ifs at Heiiiard iiailioiii. 
 
 Scenedesmus quadricuuda (Tiirp.i Kr^'li. 
 
 This alK.'i wi>> very eoinmon in thi' (•ollection> from Teller. It wa-^ toiiml 
 in -mailer t)iiani iiii-s at Bernard harhoiir. Detuarcation point, anel Hersclej 
 island. 
 
 Cruci&enia Morren. 
 
 Crucittenia rectanftularis (NiiR.) (iay 
 
 Thi> speeies opeiirred only in the plankton of the hiu lake at Hernard harlioiir. 
 'I'lio eells were a little lielow averajjo sire. Iieinn H-.")ju to .")^i l>y Afi tv) fi/i. The 
 colonies usiialls ''intained S or l(i cell^. 
 
 (^rudjienla sp'.' 
 
 In the colieetions from Bernard harhoiir with ('. icclinniuhiria were 
 Hi'en a few eoloiiies of I and 8 cells of a species aliour one-half of the si/.e of 
 ''. rrcttUKiiiliiKs. /.<., 2 to '2'yn hy '2-'>fi to :5|u. The cells were hadly eollai)sed. 
 'ibis rondition was prohaiily caused liy tl;e alcohol in which they were preserved. 
 1 could !iol therefore deleiiiiine the species uilli acciiracx . It resendilud 
 (\ rL'ctnn(iiil(iri\s in general appe.irance and is |i'iiliai)l\- a small \;iricty of that 
 sjiceie-; liut to make sure of its exact syslem.atic position material in a hetter 
 state of pres.'rvation woiihi he recpiirol. 
 
 Coelastrum XiiK. 
 Coelastrum microporum Xiiff. 
 
 This species occurred in two localities only and was not very plentiful in 
 either of them. It was found in the plankton at Bernard harbour (Sppternber 
 2t), Ifllli) and in the llippuris swamj) at Herschel island. 
 
 Coelastrum reticulatum (Dang.) Senn. 
 
 Three individuals of this peculiar species of i'lirlastri- n were roui-..! in 
 material at Herschel isiaiid in the nippnris swamp. It is not r. common al(ja 
 in North America. It has heeii recorded fron? Put-in-Bay, Lake Erie (Snow). 
 and I have recently found it in Manitoba and Ontario. It is not generally found 
 in arctic regions. 
 
'I'hc 
 
 Fre»kwaler Algrw |- 
 
 IIYDRODICTYACEAE. 
 Petliattrum .\I.y.ti. 
 Pediaatrum Boryanum (Tiirp.) .M.n.'Kh 
 
 Pedlamum Boryanum ,Tur„.) yUu.^u. v«r. ftranulatum rK(u. ) Uraun 
 
 ..•Rio,,. .,f Am.'n.l. ' """ '"'•" l""^'""-IV '•'•'"nl.'.l for th.- .irt-tic 
 
 Pedlastrum ftlandullferum U. nt,. (,,,.„ ,,, , 
 
 Pediaatrum integrum XtiK. ,^,^^^ ... ., 
 
 Pediaatrum tetras (Mirrnh.) Kulfs 
 
 riiis sprcirs w;is second in aliutidaiHo tu /'. Hnrmnuin Tf.P 1 ,.,.ll,. . t 
 
 VAUCHERIACEAE. 
 Vaucheria I)( . 
 Vaucheria terreatria (\auch.) DC 
 
 CLADOPHORACEAE. 
 
 Ciadophoi-i Kuiz. 
 Cladophora fracta (Dilhv ) Kiitz. 
 
 ..n,l 5'h" """T? ">'"' ""'""^•'i"*' f'-MKinonts c,f this ulfta were .•ommon yt Tollpr 
 and a. IJunard harbour, ..specially in tho coUoc. ions from tundra pomk ' 
 
 Cladophora sp? 
 
 ' ^^i-^rl mr'uJi:;^ !:?':':' ;'; ?,"^'' ^"•'"'^'■h r-cyonu.^,.), Port Epwor.h, 
 ■, iJi.). lumiiiu'ation of the spocic^ was not possible. 
 
 Rhizoclonium Kutz. 
 RhJzocIonium hieroftlyphicum ^A, ^ Knt. var. tortuosom (Kuu.) Sio.kai 
 ouanti'tTof r''«F-''''^?P''"^=^ f'""' '^ '""^'■■'^ "••"'• '-^t (^""in'^on point w^s a 
 
 I believe is newL't'i.is-einuLnt.' ""''"'' '' ^^ "" ^•'"- "'^'""'''"" ^^-'^ 
 49069—2 
 
IH A 
 
 ('(iiKiilian Arctic KxiH-dition, lf)IS IDIS 
 
 ULVACEAE. 
 Knteromorphn Hnivcv. 
 Knteromorpha crinita U^otli) Aumdli 
 
 This al^t,•l was aliiiiidaiit in Im>i1i hiackisli ainl fii'sliwatir colli-ciions I'ltmi 
 'rdicr. and from Mcrnaitl liarhoiir. It is really a marine speeies adapting ilselT 
 to less saline cunditions. V. S. Collins' has already reported this speeies jirow- 
 inn in fresh \val<>r alonn with Siiirniiiini and <hiliiij,,/ili(ni. It is a liliforni, 
 cylindrical or flattened, much hranehed species, the l>ranelies tapi'rinn to a 
 single series of small cells, and it is readily disliiifrnished from A'. inliKtliKilis 
 fre((iieiitly found with it in these collections. 
 
 Enteromorpha intestinalis (L.) (Ireville 
 
 This aluii was exceedingly almndant at Hernard harhcur, in fresh water 
 and lirackish water, anil at the mouth of the creek. 
 
 PRASIOLACEAE. 
 
 Prasiola (.\n) Mencf^h. 
 Prasiola crispa (I.inhtf.) .Menefjh. 
 
 \o collection of aluae from the north or south polar renions coulil he com- 
 plete without this species. All stages from the llnniiidiuiii sta^e to fairly larne 
 fronds were found on rocks, especially where sea l)irds were conunon, at Mernard 
 harbour, l'e(>rs jioint (Wollaston land), and ('ollinson point. 
 
 Schizogoniutn Kiitz. 
 Schizngnnium tnurale Kiit/. 
 
 This alfia very closely re,send)les Prasitiln cr/.v/K/ in the llnniildiuin static 
 and may he a form of that speci(>s. It was found on the lieach of th(> island 
 at liernarii harbour. 
 
 ULOTIIRICHACEAE. 
 
 Ulothrix Kiitz. 
 lHothrix tenerrima Kiitz. 
 
 This alua and the next were found in the collections only as fragments- 
 It was found at Teller, in a pond on IMhumalerksiak isl;iiid (Cockburn point), 
 and at Hernard harbour. 
 
 lllothrix variabilis Kiitz. 
 
 This was found in material from th<' bottom of a tundra pond at ('ollinson 
 point, and at Hernard harbour, where it occurred ii> the lirackish pond as well 
 as in the large lake. 
 
 MICROSPORACEAE. 
 
 Microspora I'lmret. 
 
 Microspora stat^norutn (Kiitz.) Lagerh. 
 
 This alga was not abundant. It was found in a mud sample from the big 
 lake east of Hernard harbour, and also at Teller, where som(! small fragments 
 orcuired in tlic lirackish pond and the freshwater lake. 
 
 '('utliiu. rlu- (int'n Alg.'u- ii( Nortli .XmiTitii. 
 
Freshwater Alijne 
 
 I!) A 
 
 CIIAETOPHORACBAE. 
 Draparnaldia Hon. 
 Draparnaldia ftlomerata \.ni(li.) A^. 
 
 II , 'V'T",''^'',"'''" ■^'•'•""■'1 "Illy from one loralilv, ll.r 11 n.n.nis ssyuuu if 
 
 Mougeotia 
 
 Akontak. 
 
 zy(;nema(:eae. 
 
 Mougeotia Aniirdli. 
 
 A iMlihlMT of fiMUMirnls willumt any ivpHMlurtivr stairs o,vum-.l in iho 
 l)iK lake and otlirr plac.'s at Mcnianl hail.,..n-. '""irnM in il,. 
 
 Zyjjnema Aiiardli. 
 Zygnema stellinutn (Mini.) .x^. 
 
 This al^a was oxro.Mlinnly ,,l,.,ilifiil i.i ||„. M.-niard hail.,„ir distriH V,,!,,,,, 
 
 Spirogyra Link. 
 Spirojiyra inflata (Vamh.) Kiitz. 
 
 This sporios occunrd in the Uippuris x^^■■.uup at ILTsch.^l ishui.l with -dl 
 s aeos of ,.onj„«at,on. A spcrios with ..no ..|don,ph.st (ptol.al.lv t is on.' hut 
 ...t^ .n .■onjUKation was ,.on,nion at IWnar.l harl.I.ur, Chant rv ill. d 'il.m 
 
 Spirogyra insignis dfass.) Kiitz. 
 
 an.ti!"sp;"!;ir"""' ''"""'"' ""'" '" "'■'■'*"■'"■' '^"="'"'- ^' '^ ""• ^ """•" 
 
 DESMIDIACEAE. 
 Cylindrocystis .M( ncuh. 
 Cylindrocystis crassa IV Mary ,1.|.,,,. m f-^ ,, 
 
 «,n.,ll'"'"' ''.'•. ''' "'''•,'"■'■':'' '" '••"■t5'' K<'I;ili>u.ns masses al ( olhiison point \ 
 Muall ,,uant.t. was also foim.l in th,- pon.l in tli- s-rond i.av ..i.t .] M nrird 
 .- ..Mu, Jum; Hi, nm. This is th..lirs/an.ti..r....ord for this ;,«..., 's 7.1 i^! 
 lion was o.nhrm.'.l l.y th.- late IVolV.ssor C. S. WVst. 
 
 Penium Hn'l) 
 Penium cruciferum (1).' Haiy) Wittr. ^l.|al,• 111, fi^. 7^ 
 
 Tills sp,Ti,.s was foun.l in the iago..n lake at T.'li.-r. It is moiv suh tr..ni,.al 
 or ant •;;;;• ill,''"' '"'"" '■'^'■"'••''''' f""" '-'"^'••"-'' •"" "•" ''•"■" -<>> '"l".- ....rthonl 
 
 Peniiim margaritaccum (lOhivni.., I'.i.-h. 
 
 fonn.'i^';?'?'.''^'' 'n'"* •"'"''''.'''' '■'' *'""■'>■ ''""""<"' '" "ortlioin .•oimtrics, it was onlv 
 lound in lh.> .>.ii!,.,.t,„n from the lair.>.)n lak(> at Tolior. ^ 
 
 49069— 2J 
 
20 a Canadian Arctic Expedition, 1913-191S 
 
 Penium spirostriolatum Barker (Plate III, fip. (J) 
 
 A fpw individuals of this beautiful desmid occurred in the Hiiipurii' swamp 
 at Herschcl island. It also has not been previously recorded from arctic America. 
 
 Closterium Nitzsch. 
 Closterium Cornu Ehrenb. (Plate IV, fig. Itt) 
 
 This was a very common species from the tuiidia pond and the pond 
 between the lake and sea at Teller. It wiis found also on Pihumalerksiak island 
 (Cockburn point). The majority of specimens were more curved then the type 
 form. Not previously recorded from .\merican arctic regions. 
 
 Closterium Dianae Ehrenb. 
 
 This little Clofliriam was found with some plankton gatherings, August, 
 1915, from the big lake at Bernard harboiu'. 
 
 Closterium didymoctocum Corda var. striatum nov. var. (Text fig. 2) 
 
 Semicellulac menii lana atrofulva, striata .-itriis 13-1.") transversis bene 
 distinctis. 
 
 Cells large as in type, 9-12 times hniger than their diameter. Outer 
 margin slightly curved, inner margin almost straight. Sides gradually attenuated 
 towards the apices which are broad and truncate with rounded, somewhat 
 slightly recurved angles: cell wall reddish brown, delinitely striate. Kj 1.") striae 
 visible across the cell; annular thickening of darker colour at each apex. 
 Length, 840^. 
 
 It was not common but all individuals seen were the same. It was 
 obtained on Ilerschel island. 
 
 Tig. 2. Vlostcrium didyvioclocum Corda var. striatum nov. v.ir. X 4r.j; .-.irni-cell kIiowIiik the striated 
 wall and the rogul.ir ohar-icters of the apex. 
 
 Closterium Jenneri Ralfs 
 
 The type form was found in the Hippuris swamp at ITer-iclid island. A 
 form with apices less curved than ty])e was found in a c()ll(.,.ion of bottom 
 deposits and plankton from Teller. 
 
 Closterium moniliferum (Hnry) llhrenb. 
 
 This was only found in the lagoon lake at Teller. It is common in Canad.-i 
 and the I'liited States, but had not been previously recorded from the arctic 
 regions of America. 
 
 Closterium parvulum N;ig. 
 
 This s!ii:'.ll aoslfritna i^^ cuininon in Jirctic tcgifms, but only appeared in 
 collections from two localities and was not abundant. It wa< found witii other 
 species of this genus in <he lake at Teller, and in a lagoon just west of Martin 
 point. 
 
fetriuted 
 
 Freshwater Algae 21a 
 
 Closterium rostratum Ehiprih. 
 
 Although this spocios is Micro northern than C. sclnau,,,. it was foun.l in 
 small numbers. It occurred i)iily in the Hii,puri, ^wam]) at Ilorschel island. 
 
 Closterium setaceum Khrenh. 
 
 nnH Ilrnv^l-'"* '" "'""*' !'•"■'■'■ """" ""' Pi-'-^'^^ding species, espeeiallv in arctic 
 nt}lr n^ ; "\?''' 'V '^ Y"' "'o>o plentiful in proportion to the numbers of 
 other >ppcie^. It was t.mnd in a collection of bottom deposits and iilankton 
 from the lake and from the pond between the lake and sea at Teller. 
 
 Closterium striolatum llhrenb. 
 
 This is a very common species and is well known from almost all parts of 
 
 amHn tt °^'''"':'-^'l '" l'»^ l^k''' •"•''■ki^l' Poncl, and tundra ponds at' Teller 
 and in the Uippuris swamp at Hersclicl island. 
 
 Closterium Venus Kiitz. 
 
 This species was not in Ki-eat abundam-e in anv one l,.calitv althouEh 
 ^.rly c.mmon ,n tw, pon.ls at Teller. It was also found at Oian r 'Sd 
 Herschel island, ane t Bernard harbour. • i v.n..iin> lann, 
 
 Pleurotaenium Nag. 
 
 Plei aenium Trabecula (Ehr.j Xiig. forma clavata (Ki.tx..^ W. ^ C, S. 
 
 n , , , ,. (Plate III, fig. Ui) 
 
 Uie typo form of this species has been found in Greenland and in a few 
 
 o her arctic loeahties, but the form davata has onlv been prev oi^ v ecorded 
 
 loni a ,ny localities in Franc,>, (lermanv. Italv, Sweden, the RHt sh Wos and 
 
 he I nited Mates. Three individuals ofthis form were found n i, a eri:d from 
 
 a drying tundra pond at Demarcation poini, May 14, 1914. 
 
 Pleurotaenium truncatum (Hieb.) Niig. 
 
 uncommom'"''"' ''"'' ^"""'' ""'^' '" ^'" ''*^''"" '^"^^ "' '^'"^^'■'' ^^''^'-^ ^^ was not 
 
 Euastrum ansatum Halfs 
 
 Euastrum Khrenb. 
 
 IlerJlenTnir' "uT:! I" '!"'.'"«""" ■'^^0 at Teller, and in the swamp at 
 Hn>cliel Inland. At both localities it was fairly common. 
 
 Euastrum bidentatum Nag. 
 
 I'lirooT'tko'T'rnnT''" ♦'^^•""■'^V''""'""'" "'■ ""' *^^""« ^""l "''^ f'"""! in the 
 So .^ it T^''' pond an.l ,n a pon.l between the lake and sea at Teller, 
 
 also at Demarcation point, Herschel islan.b and in the lake at Bernard harbour. 
 
 Euastr m binale (Turji.) Ehreni). 
 
 non.l^'ll!'/;?'' f"''V "'■'•"'•'■'''1 '" ^^'"=''1 numbers at Camden bav, in the tundra 
 pond an.l ,he pond between the lake and sea at Teller, and atHerschcl island 
 
 Euastrum binale (Turp.) Ehr. forma Gutwinskii Schm. (Plate III, fig. 13) 
 
 This occurred along with the type form in the tundra pond at Teller. 
 Euastrum denticulatum fKir( hn.) Gay 
 abundant.''''^"'"' '^'^^ ^°""'' ""''' '" """^ '"'"'•">■• '^"''"f"'-' ''■"' "'^^ "ol very 
 
22a 
 
 Canadian Arctic Expedition, 1 913-1 91 S 
 
 Euastrum dubium Na^;. 
 
 (Plate III. fiR. 12) 
 
 A few individuals of this species were found in the colloetion from the 
 drying tundra pond at Denuireation point. From Chantry island five .specimens 
 were seen, and all were approaehinj{ the varietv Snowdo)iirn>ie (Turn.) W. and 
 {J. S. West. 
 
 Eu tstrum elegans (IJrel).) Kiitz. 
 
 This pretty and common species was al)un(lant in several ponds at Teller, 
 and in the Hippuris swamp at Hersehel island. 
 
 Euastrum oblongum ((Irev.) Ralfs 
 
 This -.pecies was found fairly common in the collection from the lagoon lake 
 at Tellei. It was not seen in any other coiliH-tion although it is known to be 
 common in the arctic regions. 
 
 Euastrum occidentale W. and (i. S. West 
 
 This species was the rarest of the genus; only two individuals were seen. 
 They occurred in the material from the drying tundra ]K)II(1 at Demart.ition 
 point, May 14, 1914. It has been previously found in Nova Scotia and some of 
 the eastern states of the I'liited States of America, and in one locality in (!reat 
 Britaiti. Its distribution is apparently limited and it is here recorded from 
 arctic regions for the first time. 
 
 Micrasterias Agardh 
 
 Micrasterias apiculata (Ehrenb. ) Menegii. var. ^rachyptera (Lund.) W. and 
 (1. S. West (Plate III, fig. 9) 
 
 I was disappointed in not finding more than one speci;'s belonging to thi.s 
 gentis. This one was not cf)mmon. for only a few empty semi-cells were .-Jeen. 
 All were a little less sjiiny than is geiK'ral in this variety, but tliey possesseil the 
 very wide polar lobe which distinguishes it from the s])ecilic type. Hippuris 
 swam)!. Ilerschel island. July ;iO. I'Jlti. 
 
 Cosmarium Corda. 
 
 Cosmarium asphaerosporum Xord^ 
 
 t. var. 
 
 strigosum Nonlst. 
 
 (Plate III, fig. 1,V) 
 This is a very small desmid and easily f>verlooke(l, which fact may account 
 for th(^ few records of it. The type form has a very limited distribution and has 
 been found in the United States of .Vmerica and arctic regions of ICurope and 
 .^sia. The variety mentioned here was found in small luunbers at Teller, and 
 has only bei'U previously recorded from Sweden and one ln'ality in lOngland. 
 S|)eciinens were below average size. 
 
 Cosmarium binum Nordst 
 
 (Plate IV, fig. (i) 
 
 This s|)ecics is more frecpient in the tropical /one than in the temperate, 
 and has not pM'\iously been recorded in arctic regions. A few indiviiluals with 
 sufficient cliaracters to show their relation to this species were t'ound at ilerschel 
 island. l!i>wevrr, tliey dilTi-red from the type furiii in the followiiig points: 
 smaller and proportionately shorter; more truncate; c 'iiulations fewer, 1.5 to 
 each semi-cell; v'>-ti -al granulate ridges oidy .">; length 44m, breadth 3();li, brejidth 
 of isthmus 14/a. 
 
•a 
 
 I 
 
 Fret'hwater Algae 23 a 
 
 Cosmarium Botrytis Mcncgh. 
 
 This i.s prol.fihly the most K<'norally flistrilxitcd species of this eonus ami 
 was tlio eoiiiinoiiost dcsmid in the coUeption. It was iisiinllv ii littio Ik-Iow 
 iU-oraKc sizo, although then- were a few as lain.- as anv 1 have found in other 
 parts ot ( ana(ht or (ireal Uritaiii. It occinicd in cojleetions from Teller 
 Deniareation point, roJHns.m point, and from Hernard harl.om-, Ilersehei 
 isiaml, and ( ape Hat hurst. 
 
 Cosmarium conspersum Kahs 
 
 This species was also fairly ,)lentiful wher(>ver found. It occurred at Teller 
 and Demarcation point, and at Hernard harbour and Hcr.schel island. 
 
 Cosmarium contractum Kirchn vai. ellipsoideum (i:if. i W. and fi. S. West 
 
 (I'late III, fig. 17) 
 The type form of this species has hecn recorded from the Inited States 
 It IS more noiMcal than nortiiern. The variety recorded here from Iler^chel" 
 island ha.s not previously l.een recorded from the North American continent 
 hut It i.s more northern than the typ.- and has heen found in arctic regions 
 outside .America. " 
 
 C-"marium costatum Nordsi. 
 
 This is a rare and t\piraily arctic and alpine dcmid. It was found in the 
 I)i..nkton cohection ol .luiy 'A. 19l(i, from llie iii^r l;,ke at Hernard harl.our. 
 
 Cosmarium crenatum Kalfs 
 
 This also is a desmid common in arctic ami alpine collections It wis 
 fairly common m the hiKoon lake at Teller, hut was found in no other locality. 
 
 Cosmarium Cucumis (Conia) Halfs 
 
 (Plate IV, fifr. 1) 
 
 This species is world-wide in its distrihiiiion, although not recorded from 
 North America. It has Ikvii found in (iieenland. It was found hv the e\|)e- 
 dition in the lake at Teller. Kare. ' 
 
 ^ 
 
 * 
 
 Cosmarium Cucurbita Hreh. var. attenuatum (i 
 
 \\( 
 
 il'l.ite III, fig. 8) 
 
 Ihis variety has a very limited distril)uiioii. Tli,' tvpe form is fairly 
 universal hut this variety has only heen recorded from I'Jifiland, (iermanv 
 anil the \\est Indies. It was found in the plankton of the big lake at Hernafd 
 harbour, where it was very al)un<l.int. .Ml specimens were small and about 
 same size. Iei'p;th 2t)yu, breadth l.")/i. 
 
 Cosmarium cyclicum Liuul. vai. Nordstedtianum Reinsch) \\ . and Ci S 
 
 ";'^' (IMate III, tip. IS) 
 
 lliis is another variety wiiii a v.mv limited distriijiition, tieing recorded 
 
 prevKHisly ,)nly from England, Ireland. .Austria and North Hiissi.i. The tvpe 
 
 oriii IS lairly common in the north and ha< been found in Greenland Si)itz- 
 
 bergen, and the United States of .Vmerica. ■, few individii.ils of the V.-irietv 
 
 were found m the Ilippuris swamp ai IIer>chel island. 
 
 Cosmarium giobosum I" 'ih 
 
 This rather -mall 
 was fairly plentiful. M 
 
 (Plate I\-, fig. 7) 
 
 occurred in th- lagoon lake at Teller, where it 
 cciniens w, re ; ' > tie below average size. 
 
2* A Canadian Arctic ICrpedition, 1913-1!)IS 
 
 Cosmarium granatum nr('l). 
 
 This dosmid was aliiK.si as plcnlil'ul as ('. IMrytia and was found in almost 
 as many localities. It v as found in llic hraokish pond as woll as in the fresh- 
 water pond at Teller, and also occmnMl a, Collinson point and Demarcation 
 pomt, and at Bernard harbour. 
 
 Cosmarium Ilammeri Ueinscii 
 
 This species has world-wide distribution and is as frequent in the arctic 
 as in the tropics. It only appeawd in the collections from the big lake at nern-rd 
 liarbour where it was fairly plentiful. The size of all specimens was a little below 
 thi average. 
 
 Cosmarium Holmiense Lun ! var. integrum Lund. 
 
 This variety is well distril)uted in northern waters. It was found in collec- 
 tions from the bin pond at Bernard harbour and in a pond in the second bav 
 east of Bernard liarbour. All specimens were characteristic of the variety. " 
 
 Cosmarium humile (Gay) Nordst. var. striatum (Nordst.) Schmidle 
 
 (Plate III, fig. 11) 
 This small dcsmid has not been jMeviou-sly recorded from the arctic regions 
 of Ai.ienca. It was found by the expeditiop in two locahties, at Teller, where 
 It was found in the brackish pond as well as in the freshwater pond, 'and at 
 Bernard harbour, amongst stones and other algae in the river bed. 
 
 Cosmarium impressulum Elfv. 
 
 This is a widely distributed specie^ and fairlv common in the arctic It 
 w.as found in the lake at Teller, and in the lake At Bernard harbour. At the 
 latter place it was found with other algae in summer collections, also once in 
 plankton taken under the ice in winter, l-'ebruary 28, 191(j. 
 
 Cosmarium inconspicuum \V. and G. S. West (Plate III, fig. 19) 
 
 . ,. T'"^ '*^ ""*' "f ''"' 'iiiest desmids collected by the expedition. Only four 
 individuals were .seen from a pond in the second bay east of Bernard harbour. 
 June l(i, 101."). This si)ecies has onlv been previouslv recorded from Great 
 Britain and Ireland. 
 
 Cosmarium margaritatum (Lund.) lioy and Biss. 
 
 This is a generally distributed s|)ecies much resembhng C. consprr.viw. The 
 punctulations between the granules, which distinguish it from C. con.'iixrsum 
 were well marked. It occurred at Teller and at Ilerschel island, along with 
 other desmids. It was fairly numerous. 
 
 Cosmarium ochthodes Nordst. 
 
 This species was found in two collections from the big lake at Bernard 
 harbour, but was not abundant. It was more common at Ilerschel island. 
 Here, some of the granulations were irregular as in var. nmndnnn W. West, 
 but otherwise they were typical of the specific type. 
 
 Cosmarium Pokornyanum (Grun.) W. & G. S. West 
 
 This small desmid was only found in the collection from the pond in the 
 second bay cast of Bernard harbour. However, it was not vi'ry scarce. It 
 varied in size, being from 20-35ju in length and 12-18^ in breadth." 
 
Frenhwater Algae 2J a 
 
 Cosmariutn punctulatum Hrtl). 
 
 This sprcios was altnost as common j.s C. liotrijli, a.ul was found in noarh- 
 evrry oo loCon. It o,.,...rn.,l lrr.,,uontly at Teller; l.o.h in braekish and fresh 
 nlanklon n^H '"m " ''"""' P"'"'="r"'"!' P"'>'<. »•"' •'!« lake at Bernard harbour, 
 harbour maniples, and in the pond in the seeond bay east of Bernard 
 
 C. punctulatum Breb. var. subpunctulatum (Xordsi.) Rorg 
 
 .p. . . , (^riiite IV, fiK. 3) 
 
 n .,„, M 7"'"'»y;;;''^« n'-arly as frequent as the species in the l.iKoon lake and in 
 
 nrnv i I r"" '^' l^^'l '"" '^"'^ ''' '''"""'■• '^'"^ ^•"••'' ^^^ ''^'^ "''* »'ecn re-'orded 
 previously from North America. 
 
 Cosmarium pygtnaeum Ar( h. 
 
 This .species is ulmo.st entirely confined to Sphmjnum bogs and peatv nooN 
 It was not uncommon in the collection from the //%/>i<r/.s- sw..m,p; which cnl 
 taincd some Sphagnum, at Ilerschel island. 
 
 Cosmarium quadratum Halfs 
 
 It appeared in the plankton and with other alpie from the lake bottom. It was 
 also found in smaller quantity n, the pond in the .second bay east of Bernard 
 rial ijour. 
 
 Cosmarium radiosum WoUc 
 
 «„„n "^u '^ '^r'' ''^ *''• ''T ''','*^''*',"^ *'''' expedition. Onlv thre.. individuals weiv 
 Ai^lt T ,q[^""t/" ^^^ '"■"•■'^'t P"'"' ''"*' •'^•^ «l'"''-^ i" *•»" '='"<^' at Teller. 
 roPn Hn^ Ani .• 1 T"""^.'"!^ •'•^'■^ '" "f '"t'>rest, as it has hitherto been 
 recorded only irom the I nited States and Ireland. 
 
 Cosmarium rectangulare Grun. 
 
 in twnwllir^ ui.co.nmon in arctic n.gions and was found bv the expedition 
 in HO localities hut not in abundance, in the tundra pond, Dei 
 and in the big lake at Bernard harbour. 
 
 marcation point. 
 
 Cosmarium reniforme (Ralfs) Arch. 
 
 This is another typical bop; desmid of northern reginns. It was found 
 however, only in the mvpuris .swamp at Ilerschel island. Not common. 
 
 Cosmarium speciosum Lun.i. var. bifoime Xordst. 
 
 ♦ „.. V'K\''- ''^'""' "" ''rf ^'"■"' *''"'" "''""*' •"■ arctic refrions. It was secured in 
 tun localities ne;,r Rern.ard harbour amongst stones and other algae of the 
 n^eI i.e.1, and m the pond .n the second bay eastward. It was fairly common. 
 
 Cosmarium Stefanssonii sp. nov. 
 
 C. minutum, oblongum, sinu angusto. versus apicei 
 ^rnn nln* , " ''ectanpulares, angulis inferiorihus rotundatis; incmbrana subtiliter 
 loil '?9 V f'f •o^'o"'-'''' '='* ""'""osae, ovales, paulo elevatae, scrobiculatae. 
 
 norrow Vn? ,;ii f 1™1T *"'' "'•'" '.'"?'^' "'"fifrately constricted; sinus 
 r,:.t.T'i '' '^-'''^ "/ *''^ '"^f"'^' semicells sub-rectangular, basal angles 
 
 omraS mo"e'' ""T'"''''- , '^'l''', T^T '"'^'"'^ "P °f ^^"^^ depressSn 
 ■spparating more or less oval, shghlly elevated areas. On each semi-cell these 
 
 (Text fig. 3) 
 iipiccm haud dilatato; .semi- 
 
26 a 
 
 Canadian Arctic Expedition, l!)t3~-l9tS 
 
 areas f.iriii two (jroiips -a polar Rroup of 12 14 areas and a liand next t<Mi'e 
 sinus of IN 22 anas. 7 11 seen on one side. Haeli elevated area. Ii >'!■ smiis 
 to pole, bears 4 '> pairs of si roliiculations and often an unpaired ternii>.ai one. 
 This is a jH-euliar type of desniid without any elose relation to other species. 
 In iKKssessinK eanal-like depression with seroltienlate elevated aieas it is distinct 
 from other species of this (jenns. Only a few plants were seen in the inaterijd 
 collected from the creek at Bernard iiarliour, .VurusI lt>, 101."). 
 
 lilt. :i. tuxniiiruim Slifiinsminn niiv. H|). X 810; ii. fiioc view, '>. iMnl view. 
 
 Costnarium subcostatum Xordst. 
 
 This is a small desmid. It occurred in the plankton of tlie lake at Bernard 
 harbom-. and in the swamp at Herschel island. It closely r<>senit>les C. siihcnn- 
 Ilium which is also found at Bernard harbour. The cremilalions were almost 
 waiilintJ at the apex ami ihey were tiencrally bi-jjiamilate in other jilaces. 
 Central uramiles 14 id. 
 
 Cosmarium subcrenatum Hantzsch 
 
 This is a species of world-wide distribution. It was found in small (piantities 
 in two localities, from the bottom of a tundra jxind at Collinson point. aTid with 
 other desmids in the river bed at Bernard harbour. 
 
 (Plate l\. he. 2) 
 
 hither- 
 
 Cosmarium Subcucutnis Schmidic 
 
 'I his si)ecies is interesiinti on account of its limited distrilmtion, for hither- 
 to it has been recorded only from (Ireat Britain, Ctermany, and .Austrian Cialicia 
 ound in the colU'ction from the Hippiirls swamp at Herschel island 
 
 It w 
 
 Cosmarium subexcavatum \V. and (1. S. West 
 
 This di'smid has i)eeii recorded from Nova Zembla and ( Ireenland, so it is 
 not surprisintf that it should turn up in the Canadian arctic. In the pond in 
 a swaini) in the second liay east of Bernard harbour. It was !iot very plentitul. 
 
 C. subexcavatum var. ordinatum \V. ai>,l (1. S. West (Plate III. fijj- 10) 
 
 Amoiifist the individuals of the last -mentioned sjiecies was one which was 
 less granulate and longi-r than the typical form a7i(l identical with West's hfjure 
 of the var. nrdlnatiini. so that I have no hesitation in recorciinn this variety, 
 although it has only been recorded previo\isly from Switzerland and I'.iifilaiid. 
 
 Klebsii (dut.i W. ami (1. S. West. 
 (P1m1(> IV. fin. .")) 
 
 There is little difference between the species and its variety, but the 
 specimens from the north were id''niical with some sjiecimens I collected in 
 Lake Winnipeg. Manit<)l)a. and which tlie late Professor ( 1. S. West inunediately 
 identified as the variety KIchsil. It was fairly common at Bernard harbour in 
 |)lankton and l)ottom deposits and in a drying tundra pond at Demarcation 
 pf)int. 
 
 Cosmarium subtumidum Nordst. var. 
 
FrtshwaUr Alyae >- ^ 
 
 Cosmarium tetraophthalmum Wn'-h. 
 
 This larKCMu.iycrsally .lisfrilmtod siM-cics was found onlv in tlio HinnurU 
 
 wm- of full s./,. and . h.,w,., l,o,h th.- Kiarn.laf and pun.tat • (•harn.l..r of tl..' 
 wall cloariy and the relatively snio(.tli a|M'x. 
 
 Cosmarium trachypleurum Lund, var, minus Haeil,. (iMate IV, fig. I) 
 deposit, from a tundra pon.l. an.l also in a porul l...|ween the lake an.l s.-a at 
 
 Cosmarium Turpinii Hr< li. 
 
 !• ke Tt'"T.Tr''"' 7 r. "'"'"" •'" '"•"!""" "^ '■• Holnilix. It was foun.l in the lagoon 
 l..k( at leller an.l Deniareat.on point, an.l in the pl.-mkton and l.ott..n. samples 
 of the I.IK lake and in the river l,e,l at Bernard harbour. 
 
 Cosmarium undulatum Corda 
 
 This speei..s, althoiiph wi.lely distril.ute.l in the world, is not K'->'<''allv 
 
 ;;;; r'r i, Ttr^^ ?■ "'" ••^I'V^'i"" <•"'>■ "- »<'".ard harhour. wh..re l' 
 • x.uned in a plankton eoNeeiion and a neneral eolleeti.m from the hi^ lake. 
 
 Xantliidium Khidil). 
 
 This Keniis, whieh has numerous wi(h'ly distributed spe, ies. was represented 
 by only three sju-cies, all fnm. the ////,/n/r,.v swamp at llerseh,.! island 
 
 Xantliidium antilopaeum liinb.) Katz. 
 
 This was th(...on,ni.,n..st member of the Kem.s. However, it was not v.tv 
 I'l' nlilui. All specimens observ.-d were quite normal and of average size. " 
 
 Xantliidium cristatum Hr.'b. var. bituherculatum nov. var. 
 
 (Text fig. 1. a, bi 
 
 A speeie typiea maxiine .li.stinetum semieelhilis majoribus, paido lo„fri„nl,„s 
 nam lat., minus anKulatis; area eentralis tui,eivu!is duobus iminita ; a vertiee 
 \isa(' (semieellulae) elhptieae, lateribiis bitubereuhitis. 
 
 Ceils slinhtly smaller than in the type, a little lonper tnan broad. Sinus 
 open and d,.eply eonstrieted. \ertieal vi.-w elliptie. Semi-eeli M,mewl;at srb- 
 semirinular with a eonvex ba.-e furnishe.l with spines as in the tvpe. but 'ess 
 aMiiular at the spim-s. 1 he central area is provide.l with two circular tubercles 
 in ■' line parallel lo the Ion;; axis of the semi-cell, .\pical view elliptical, showing 
 
 I"g. 4. Xanlhulium cn.sl„lum Hr.'l.. vur. Iniulcrchlum n.iv. viir. X 5011: a. fa.'O view, /., ,.nd vi( 
 
Caniifiiati Antic h'lfwdition, 19I3~I9IS 
 
 28 a 
 
 two tijlH-rrlcs on <'ii.h side, I.fiiKth willu.ut s|)in.>« M OSti, with >pin.-s 7H 84^: 
 l.r.-!i<llh witlK.iit spidcH .•)») .VIm. will' -P'""'^ '"• '''^^- "'"'"'"'' "' "'l'"""-* -"''• 
 
 TuIm-icIcs tlinnn-t(<r S/i. 'li'-taix*' i'l""' •' "''• . , , . , ■ • .1 
 
 No cUs \\i\r ohi^crvcd with .1 lurRr (•••ntral tiil«T.lr such as is foiiii.l in the 
 typr, uiul no olh. • viirii«fi.s w.t.< soon. It was not <iiiil<" iis tmini-rous as the 
 preceding speeics. 
 
 Xanthidium fasdculatum Kim iil>. 
 
 Tills spccirs was uhout us fri'fiiU'iit as A'. milil<>i,mum. Mo^l of the plants 
 woif siinhtly below avcraRc size. 
 
 Arthrodesmus Ehrenh. 
 
 Arthrodesmus Incus (nreh.^ llass. var. RalfsH W. '^J//- ^^est lonna 
 subhexaftona W. & G. S. West d'late III. t-n. It) 
 
 This was the onlv repr.sentative of the KC'ius. It is a world-wide speries 
 
 with a eoiisiderable variation. It was fairly common in the collection from thy 
 
 //,/>/H(n.s swamp at Ilerschel island, and all specimens seen w.Te Miiall, short 
 
 spineH. suh-hr-xaRonal forms charact.-ristic of the forma mhh>Tngo>,n ot the 
 
 var. tuilfxii. 
 
 Staurastrum Meyen. 
 
 Staurastrum Avicula Hreh. (I'l'itf" IV, fiR. i:{) 
 
 This species was frequent in a mixed eoUeclion of plankton and hottoni 
 
 deposit.? from the tundra pond at Teller. 
 
 Staurastrum Brebissonli Arciier il'late IV. fijr. 12) 
 
 A foriM of this species was not infrequent in the lake at Teller. It ditT.ied 
 from the type in having the si)infs at the angles shorter than u.sual. 
 
 Staurastrum brevisplnum Bail. 
 
 This species was rather rare and was fi>und only in the plankton from the 
 big lake at Rernanl harbour. 
 
 Staurastrum brevisplnum Hail. var. inerme Wille 
 
 I was uncertain at first as to the exact determination of this desmid, so I 
 submitted some drawings to the late Professor (i. S. West, and he identified it 
 as this variety. It was fairlv abundant in the lake at Teller. Previous records 
 are known from Xova Zenilila, England, and the United States of America. 
 
 Staurastrum denticulatum Archer 
 
 This .-pecies was also faiiK abundant at Teller, in the lagoon lake, along 
 with otlie- .ilgae. It was also found a few times in the plankton. Although a 
 fairly common species it was not found in any other locality. 
 
 Staurastrum furctfterum Rreb. (Plate IV. fig. 0) 
 
 Only a few emiitv semi-eells of this speiics were obt^erved. and they were 
 all in the material from the Ilipnun's swam]). Ilerschel island. With one 
 exception thev were all triangular forms and true to type. (Jne semi-cell was 
 abnormal, bearing, in addition to the usual pair of arms at each angle, a seventh 
 arm or process arising in the middle of one side. The species is not uncommon 
 in arctic regions. 
 
Freiihwaler Algae 2!t v 
 
 Staurastrum hexacerum (Khni.l,.) Wit it. 
 
 «... ll;in,l''r,"''"'' n ''''''■'' ""•"•"*;'"■"■' HlH..-iii...... won. MualhT thut. itsual. 
 
 .?>ir .r 7'''!'' I 'J't ''''.''■'" '" ""■ ^'■'^" "' ■'"'■""'•• "•"' ••»" i"'l"'f<M-t f..rn, 
 apiM-atctl tit HciHfhol ihIuihI. ' 
 
 
 Staurastrum IlolmH (Will,., mov. .•„,u1,. 
 
 Cosniarinm Hoi 
 
 nut 
 
 Wille. 
 
 !s. nnfl nlso in 
 
 ; m'^i'l^ation of this variation fro>n tu■(.-^i,i^,^ to fonr-sido,l for, 
 
 '1 an. mik.btea to Mr. 1- . J.,;uti»on („.• t^ 
 
 "'."„''! ■,"""!"■'''■ "^V '''im.Phrm i;ip(.iliti„nen. bS.', Cpenl.-.c™ K,; 
 
 l«Hn«a«^ 
 
;H) A ('iimiiliiin Arrlir Hxinlition, l!)l MV 
 
 T».»-».iili'il f..iin H.Miii..ill nOxJH;,; «iii'' adtli :»(>m: l.-nnHi ..f wIi"1i> 
 
 ('.•n IMIm. F«»ur->.i.|.M| form: i«.mi-ri'inM) x .»( ^ -muH :M)m; IrtiRtlM.f wli..!.- •HI 
 
 Til.' spo.iiiirn-. .•xamiiicMl t.v Willi' won- fi.iiii<l on the K.'liitmouft iMivil.t|K' 
 
 (.! a Protozoan colonv, 0/./iri/«/M/m nrxatilr. ['h ajfirity of iii<livi«liiaU I foiiiul 
 
 \v«rr ai^o attarh.ii to tlir K<latllioii« wail of an Otihriiilnim roloiiy, probalilv tin- 
 
 Muw «|H'i'ii-s. riifv w.rr fairlv iiu roii>', ami it \* poxsil.l.' that tli.'ri' h a <oni- 
 
 HH-Ti^ual r.-lalioii Utwcon the two oritaiiisnt>4. 'VUv Ophrtiilium muikh wa-* o .taincd 
 in tin- i'itt lakr at Mirnanl liarl-our. an.l in the winif lak.' a few iiulivi.luaN ol 
 this .Icsn.id apprariil fr.-.' in tin plankton (July H, I'.Mti). It aUo oc.iirr.'.l in 
 coll.Mtionr' from Dcmar.ation point and Cliiuitry island. DiHtriluttion: Norway, 
 Austria, Nova Ziinhla, Arctic America. 
 
 StauraHtrum lum urn Halfs l*''"'"' IV, fiit. ID 
 
 A form of this s|M'cics approaching N. tompi-'Caiiiim Holdl was common in 
 the plankton collections from Teller. 
 
 Staurastrum lunatum Halls var. planctonicum W. & (1. S. Wost 
 
 This variety was found in small miinl>ers in itie plankton of the I>IK lake at 
 Bi-rnard harlioiir. It is fairly common in the Kuro|H'an Arctic plankton, l.ut 
 not in that of the .\mcrican ,\rctic. 
 
 Staurasirum megncanthum Lund. 
 
 This species occurred onb' in the ////»/»i(r/.-< swamp at llirschel island, 
 where it was fairly ahundant. It is not unkm>wn from arctic regions l.ut has 
 not iM'on recorded from those of .\merica. 
 
 Staurastrum itiurlcatum Halfs 
 
 This desmid was found in the plankton of h" lagoon lake at Teller anil was 
 not infreipient. It has about the same distnliution as the last sjwcios. 
 
 Staurastrum muticum Brel>. 
 
 This s|)ecies was far more comm<m and occurred in three localities. It was 
 found in the huiuon lake at Teller, in the //(>/)i/n.>' swamp at Herschel island 
 and in the hit; lake and amongst other altjae from the river Led at l{ernard 
 harbour. 
 
 Staurastrum orbiculare F.alfs 
 
 This spi-cies was fairlv common in the lake at Teller. It is frequent 
 throunhoul the I'niteil States but not in the ar.'tic parts of America, althoutjh 
 common in SpitzberRcn and Nova Zembla. 
 
 Staurastrum pachyrhynchum Nonlst. (Plate IV, fiR. 14) 
 
 This is a species cominoii in northern regio.is and has been found freiiueiitly 
 in arctic waters. However, it was not common in these collections, appeariiu£ 
 in Hinall (luantity only from Herschel i.sland. 
 
 Staurastrum paradoxum Meyon 
 
 This species is one of the most freciuent in some Canadian lakes but was 
 pxcoedinfjly rare in the arctic material. Two specimens were seen from 
 Demarcation point, and a poorly developed one from Herschel island. 
 
l-'trKhuitlii- Myae ^^^ ^ 
 
 SiMurattrutn |M>lymorphum HulN 
 
 wrrr alHM.t rvrnlv .li.tiihu!...! """""' '"'""'■ '•■"•'- •••"I l..i„-..,.|..,| f„r,n.. 
 StauraHtrum polytrichum I'. .1 
 
 Staurastrutn punctulatum Hr. I,. 
 
 .p... w 1;:;':;:'' ;';-teir"'''""r"' v' ! •• '"••""-^ "- v.„h..,. 
 
 Staurastrutn Reinschii |{..y 
 
 (I'l.ltr IV. fiK. ,S) 
 
 Staurastrutn setigerutn ( li \ . 
 
 OfcurHulso in ManiK.l.a. ' ^'"''"' "^ •^""■'•"•••t an. I 
 
 Staurastrum vestitum Halfs 
 
 •■ r";r:;;:'t-ii;iir;:,;;;!''';::;t*,;;:'';;,;l'';,''''''""''"" ■ '■■■'■'■> 
 
 Sphaerozosma ( oicla. 
 Sphaerozosma excavatutn l{alfs 
 
 ai..nS."' irh;;ri;::r;:;I.,;:!:;-'';;:l.;:;'>;/^ i^'--. an.. ... „.., 
 
 "'<• ar..tir. (-..lis sli^M,tly\,rl,,w av.'rai. i!p. ' "^^ '""' '^ ""' "'"■"■""'"" '" 
 
 Spondyiosium Brt'l.. 
 Spondylosium planum W. ,t ( ; S \\>st 
 
 •■■«' "'. x;,r,,'±,„;',:. 't;; ',",;'s.:'i';;';:;,';r' """""■ ""■ ■■"■"■ '"•" 
 
 Ilyalotheca i;ii-. 
 Hyalotheca disslllens ^.Sniith) rsr.l.. 
 
 T5FT 
 
Canadian A' ■ ^xpedUion, 1913-191S 
 
 ^"■^ , , (Textfip. 6) 
 
 Hyalotheca mucosa (M. U.a-^ . common in on 
 
 This dcs.nid with Its ----■•- ^tlHragments were also found m th 
 of the tundra ponds at elle.. -'/^^J^^ common in the warmer temperat 
 material from Hcrschol island I* '-^.^P^^^'^rded before from arctic waters 
 '•muneter If ^.tloV-Uoi diameter of colls 15., len.th of cells 18-20, 
 
 . .Me,, > lUlt.. A ,>l,o.on,ic.ro.raph to .how dia.noter of the mucus si, 
 StKI'H AN'lKONTAK. 
 
 OEDOGOM ACK AE. 
 Bulbochaete Asiudh. 
 
 Bulbochaete sp. .,,„„..ucd in collections from ncsul 
 
 Vrasn.onts 1^<'1"''S1»!=^^<« V":,,'^^, .^'''V 1, w'^-o fairly almn.lant an 
 
 •;Lr^,Ssinn.s.KleU.id.nn..t^^^ 
 Vosctativc coll: dianuur i., - m. 
 
 Oedofeonium Link. 
 
 Oedoftonium sp- f,-mmontod, w.iv even more free 
 
 Filan>ontsufOrJ<;yo,num moH - , f "^ \,,^ „,,„rial from He, 
 
 „,,„ 0.OS0 of /i./6oc;,n<:(c. ;^ .';,.;' ,.;,;/^'" as found only i.i the vogot 
 SSiollt^Jh^t^S^Srof ':;::cios'was mnited to tho Uerschel , 
 
 collections. 
 
 Oedogonium nodulosum Wittr. 
 A few small filaments (>f this 
 fliP /,'//i/)ur!s swamp, " 
 
 (Plate IV, fig. 
 wore obsorvo.l in the collection 
 
 ,,.„u,-,j-. s«;iu.„. liorscliol isiana. n^ .^^^_ ^y^j.^^ ^,,j(, 
 
 „„iveSu"l.-»i"K •«■» «r?i\';;,"lta» '''tI-'VimI!' obs,;-vc<rwcrc som 
 
; fig. 6) 
 on in one 
 nd in the 
 temperate 
 
 raters. 
 Is 18-20^.. 
 
 Freshwater A Igae 
 
 33 
 
 \egctaiivoeelldiamot.-is: n.nslriction 1 1^; wider part 2;i-2,-,u- ''i-S times 
 
 Oogonia: 4.1 x GOyu. 
 Oospore: none fully ripened. 
 x\ntlieri(lia: diameter IS^, length : -... 
 
 Oedogonium paludosum (Ilass.) W, t.. ..u. amen ;anum \ordst 
 
 r.pri^ir:ig;r:.S;:'th:s:^,f:j^^tx;xr:.H^*^r!-r 
 
 VcKOt.ative eell: l.V 2.-)m dian,., U-8 diameters in 1 
 Oogonia: til) ti.V diam., SO-lOO^u h.ng. 
 Oospores: I.", .-,n^ diani., 71 !)|)i 
 Antheiidial cell; 12 20^ dian 
 
 length. 
 
 )/u long. 
 
 .VS 
 
 H long. 
 
 mucus sheath 
 
 )m nearly all 
 idant and in 
 ivere present. 
 
 more frequeii! 
 rom Ilcrschi ! 
 he vegetatiM 
 crschel islam 1 
 
 IV, fig. 15) 
 !olle.ction from 
 with the vepi- 
 ree wide rari? 
 rere sonievvhi'i 
 iia, and Souih 
 
 IIktkhokontae. 
 BOTRYOCOCCACEAE. 
 IJotryococcus Kiitz. 
 Botryococcus Braunii Kijtz. 
 
 Mirone 'ind in tie I' ^ \ f ^•'"l.^ aoiiiulant. It is eomnion tlirougiiout 
 
 . n-V } ''•'\'\':«'--<-"tly fo.m.l ii in Manitoba. alth„„Ld, -.f 
 
 no l.uhhshed reeord for Canada. I eannot find any aretie n ';,„i 
 
 Iiiesent there i 
 I'm- it. 
 
 Ophiocytium majiis Xiig 
 
 OPIIIOCYTIACEAE. 
 Ophiocytium Nag. 
 
 of .lu"nViru*it,iK"r hr'' °^ "'" ^'^""'^ '""' •■''''^'">' ••'•eognized. One end 
 
 TRIBONEMACEAE. 
 Tribonema Derl.es iV: .Siijiei. 
 rrihonema bombycina (Ag.) ])e,l.. & Sol. forma tenuis IFazen 
 
 If tl„!^''' m'"""/'/' '-' '"»''" '■«'•"' f'f t'"' ^P'"fi<'^ is fairl 
 .»' tile worlfl ah 'oMo-h v-f - i t ^ 
 
 s. _ 1 ti'-'-'Mgii !ii,t -o euiu 
 
 ^t occurred with 
 
 r 
 
 'gions 
 
 >pe, 
 
 y common in most j)arts 
 I is not infrequent iii arctic 
 
 the \\ 
 nerschei i^f.^rn'r" 7 ! r!^^^ ,'1'*^'!'' '" ^ *'''K""" J"st west of .Martin point 
 
M A 
 
 Canailinii Arctic E.riinlltl«n, Ull.i UtIS 
 
 I'HAKOrilVCK.VK. 
 
 Synura Klin-iil). 
 Synura Uvella Kluonli. 
 
 Tliis was ;li(> only rcpicsciitativi' <>t llic luown :il(jac and occiiiicil in smal! 
 quantity at Cape Hathuist. .Inly, 101(1. 
 
 WIIODOPHYCE.U-:. 
 
 HELMINTHOCLADIACEAE. 
 
 Batrachospermum Hotii. 
 
 Batrachospermum vagum (Hoth) At£. 
 
 This species is well known from the fresh waters of nearly 
 and tropical countries, and a form has been recorded im'viou.sly 
 Alaska. It was secured hy the expedition only from a tundra | 
 along with Hjidhilhica iiiunixa and other alsiae. Cystocarps ahsi 
 of tlie earliest known freshwater algae of Canada and was recor 
 in 1S.'>S. Paris, Canada West (Ontario). 
 
 all t 
 from 
 Hind 
 
 nt. 
 <led 
 
 em|)erati 
 southeri 
 at Telle 
 It is on 
 
 l)V Kenil 
 
II. 
 
 The Freshwater Diatoms of the Canadian Arctic Expedition 
 
 1913-18 
 
 I 
 i 15y 'mahi.ks \V. I,(.\vk 
 
 J .■ H!;:;;;T::U/ir;.,;;;;;'';;::':::/7r' ■? f '■••'t''^^^'"-- -'•' '-kish..,,.,. 
 
 ^^^^^.^^^I^_ K p .1. ,,,l, „n >,„.,.,,.,1 .•.,ll,.,.t...ns hnntt nia.l.. Cur ,liat„„,s in 
 ior.ns worofoun-lin ,1,,.,;' ' ' sinpnsu.K ,hat a .nnnhw of ,i..,. 
 
 ? » T ri;i:im;;;?™;':!";;;;;;fi:;,;!r ;;i;:;;;;,r.;;-i ;r"- -; <r '-, « 
 
 1 ^*:;;™:;,;i"l;;;:';;;:;r;;;;:;;;::i,:' ""■ ■■■ ■ "•-'- ' *:■■■ 
 
 H- Van Ilcuick 
 Wollo . . . 
 
 Trait (■■ dcs Dialonu'c 
 
 The Diatomaccac of \ortli AnK'iica. 
 
 
 i CKNTKICAi;. 
 
 I Mki.iisikkak. 
 
 1 Syndendrium i;hi. 
 
 fiyndendrium Diadema Jlln. 
 
 I > > the only or,H.,T,.n,.o of tins spcHos in ,h. fn.sluva.,. . , ! .,! .■/;I :.,,A 
 
 lako 
 t90t)9-3i 
 
3G A 
 
 Canadum Arctic Kspalitl.un, 1913-1918 
 
 Melosira Ak- 
 
 Melosira granulata (i:hr.) Kulfs 
 
 This is a typical plankton diatcm in tho lakes of the Donnnion It was 
 foun.l in the plankton'of tho lagoon lake at Telk^- July -ul ^ep,e■nher, 1913. 
 and in a tundra pond at Collin.. . point, June, 1914. 
 
 Melosira undulata Ehi . , , , , 
 
 This snecies was found in a coUoction of bott ,m deposits and plankton 
 
 from the same place, February, 19L). 
 
 Melosira varians Ap. 
 
 A few short filan.ents of this species xve.e found attached to otlu-r p ants 
 in a collection from a tundra pond at Teller, August and >eptemb..r, 1913. 
 
 Cyclotella Kutz. 
 Cyclotella antiqua W. Sm. , , i » 
 
 This prettv little diatom was not very .mmerous in any one ^^^1,^!; 
 
 Stephanodiscus Ehr. 
 
 Stephanodiscus i.lagarae i:hr. 
 
 This common American diatom was found only in the >;;"d ^;.^'"'[;;;/,^°'; 
 under the ice taken in February. 191ti, at the Lig lake at Bernaid liarl.our 
 Onlv a small number were present. 
 
 ;it Bernard harbour i 
 u re is prul>al)ly accidenta 
 
 TAnKi,i.ARu:AK. 
 Cirammatophora Khr. 
 
 Grammatophora angulosa Ehr. 
 
 This is another marine si:ecies found in the big hiki 
 the nnid sample taken February, 1911'.. Its presence 1 
 
 Tabellaria Kinz. 
 
 Tabellaria fenestra ta (Lyng.) Kiitz. 
 
 This is a common plankton diatom. It was f.mnd in collections r' ,;lanktc 
 from the lagoon lake. Teller, .luly and August, 19i:5. -U I ornard harbour 
 was in the lake plankton in ,Iune, 191(5, August and ^eptelnber, }»1;'- f^J ' 
 taken at the creek mouth, July, 1915, in the same locality, and a. lierscli 
 island in the Uiiipnris swamp, August, 1914. 
 
 Tabella-> fiocculosa (Hoth) Kutz. 
 
 This species was about as frequent as the preceding one. It was found 
 Teller, Julv. 1913, in the lagoon lake, and August of the^same year •» a tund 
 pond, also' at Martin point in a tmidra pond, in the piankton o! ^ "^ '«';'^;_ 
 Bernard harbour, August, 191 o, and in the stomach of a hsh taken October 
 191."). 
 
Frcshwnirr Diitomn 
 
 37 a 
 
 Khabdonenia Kiitz. 
 
 Rhabdonema arcuatum (Ar ) Kiitz. 
 
 ThU ills,, is !i iiiarino f(.rrri fdiiiui in tlio itnid of the lake at HciiiMid harl.oiir 
 Ichriiarx-, 1910. 
 
 rilNNATAE. 
 
 DlATOMK.\E. 
 
 ^, Diatoma J)C. 
 
 Diatoma vulgare l^ory 
 
 This spicifs was mily fouml in two (oMcfiioiis mado AuRUsi 191.'. at 
 Hcniani liailM)ur. A few wore .spon in tlic sample (il.tained fmni tli.' brapkish 
 poiul and Mioro wore foun(l in tlioplankt.Hii-n.ni till. liifT lake. It was not abundant 
 altlionuli found in most fri'slnvatcr areas. 
 
 Denticula tenuis Kulz. 
 
 Denticula Kiitz. 
 
 This specie.s wa.s soim-what niore frequent than tlio last naineil It was 
 ound at Camdon bay, July 4, 1911, in the bi^ lake at Bernard harbour, ,J„ne, 
 19I.>, July, 1910, and in th(? sloniaeh of a fish taken October 4, 1915. 
 
 Opephora P. Petit. 
 
 Opephora Schwartzii (Grun.) P. Petit 
 
 This species was found only in a collection taken from the l.isoon la e if 
 loller, AuRust, 1913. It was not numerous. 
 
 s found at 
 II a tundra J 
 he Inko at ^ 
 October 4, 
 
 Synedueae. 
 
 Synedra Ch;M. ]:m. 
 
 Synedra amphicephala Kiitz. 
 
 Tills also was very limited in its distribution, being found onlv at Bernard 
 harl)our, at the creek mouth and the big lake, July, 1915. 
 
 Synedra Ulna (Nitz.) Khr. 
 
 This diatom was fairly plentiful, being found in freshwater samples obtained 
 in July and Atigust, 191:5. at TeUer, and at Bernard harbour during July and 
 August, 191.J, and February, 191(;, in the plankton; also in a fish stomach 
 obtained October 4, 191,'). 
 
 Asterionella formosa Hass. 
 
 Asterionella Hass. 
 
 I his IS a com. 'on lake plankton diatom but was not very i nerous in these 
 northern coUectK ;. It was found in the plankton of the big lake, Bernard 
 harbour, July and September, 1915, June, 19I(), and also at the creek mouth 
 July, 1915. ' 
 
 EUNOTIEAE. 
 
 _ Eunotia Ehr. 
 
 Eunotia gracilis (Ehr.) Rab. 
 
 This species was found only at Teh'T, where it occurred both in the brackish 
 pond and the lagoon lake, August, 1913, It was not very numerous. 
 
:is A 
 
 C,iM,hi,,i Arctic Kx,>,ililion. t'.H.i t!}IS 
 
 1 ;it ■rdliT. 
 
 F.unotia diodon Klit , 
 
 ■n.i- lik..wis.. NV.S i..u>,.l only at 'IVILt, an.l in only .m.- sarnpU- f.o,.. th. 
 lanooii lake, July ?.!. l'.»i:<- •<="'• 
 
 Kunotia monodon Kin. 
 
 Tins was a littl. n.-v ,.ln,tif-.I than /•;. ./'W,m. L.-inp .....n.l ..p.... two 
 ...-••asions in .Inly, I1U;{. in the same lake. 
 Kunotia triodon Kin. 
 
 ,,,.,,^-^^-J;"T!.^:';;rT.;l'•;;:,r;;r,:™^'™"^:^^^l;S;;'ll;:;^^ 
 
 Eunotia pectinalis Kni/. > U; 
 
 This sperirs was fuun,! in a Hnall quantity ... a l..n.l.a p.nn 
 
 Aiimist, I9i:<. 
 
 Eunotia praerupta Kin . , , , 
 
 Tlu. 1: p.on lak.- a. -r.ll.r was a.ain tl.- only locality ,n wh..-l. tl..s sp..n,-s 
 wa< fouiul. July. HH:?. It was imt nu.o.nnn.n. 
 
 Eunotia praerupta Ki..-. va.. curta ('...m. 
 
 Aurn>:rs. tlu. sp.'.a.n.-ns uf thr las, ......m<....'.l sp.r„.s w,-.-.- a f.w of tln> 
 
 va.-ii'ty. 
 
 Epitlieniia Hk'I'. 
 
 Eoithemia Argus Kiiiz. 
 
 This .,„...i..s o,....nn.,l ... a san-pl. oh.ain.-l J.tn- .7. lOj.i. ,n a .....ss-t u.nh. 
 lak- at Chant.-y ishu.d. (...ly a f.w f.-us.uhs w.m.. ..I-sctvc.!. 
 
 Epithemia giblia Kiiiz. , , . if 
 
 tai.lv .•o.n.....n sp.Ma..s aa.l was f.,..n. in va,...us l.,caht.<.s. It 
 
 This was a 
 
 
 at Hciiiaiil hail)nur. 
 
 Epithemia llyndmanii W. Sm. 
 
 This .liaton. was found cjly i.| '1- ''l-'-r^'-'Sv 'h 
 w.,v,n .-.■....k nca.- tho Sa.ll.ao.-h.t iiv.-. It was iai.lv al. 
 
 istcd pclihlcs taken fio.n tho 
 luidant. 
 
 Epithemia Sorex Kvitz. 
 
 irtil as the last iianitMl. It likewise wa^ 
 
 ,,..j-';;rK'i:..Tn.:::^i:r;;.u; •■;" iviii.: i, .., ,,..,.,■..., ... ,he p,ank,o. 
 
 fn'.n th.' lake at He,-.,anl l.a.hou.- an,l a, the e.eek ,n..,.th. 
 Epithemia turfeida (Kill.) Kilt/. 
 
 l;;:t™\,:;;:;;!r:iii;."." -i.™i'''i -n. .1,.' .-.i,.,,, ,- ,..bi,i,.s ..k ,■ .1.. 
 
 war... <ieek in .idithei.i Alas,^a. 
 Epithemiaturgida.Kh,.,Ki.t/. va,.granulataKu,/. 
 
 .^rs.:i'':u5;;-;;!rf;'!;^ii:;'"rjf^'':--™;;!"-''"'- 
 
 va.-iotv. They we.e ..htaine.l only i.on, these ,,el.l.l.>. 
 
\\\l' 
 
 II two 
 
 )tMincii 
 iiiiit. 
 
 I<'nc-i-, 
 
 ;|)('C1('S 
 
 of tl. 
 
 ■tiiinl':i 
 
 lies. It 
 M'd. and 
 creek in 
 ; iiioiltb 
 
 iiini I lie 
 
 wise was 
 nlaiikton 
 
 Vi'sh aiui 
 and was 
 t'r(nii ilie 
 
 I he wnvm 
 e of this 
 
 i 
 i 
 
 < 
 
 Fnshiritli r hiiilnni.i ;^() ^ 
 
 Kpithemia turgida (Kin. i Kuiz. vai. Westennanii KiUz, 
 
 In a.lditioii to UciUK found in fair .inantiiv alunii wiili liie sniMie- this 
 vanetv was al>o toun,l at Mart in poi„i. .I,,,,,., lOII, ,„i,l on the n,,hni,ll,un mass 
 lioiii the lake ill Meniurd harbour, Atiniisl . l!t|.'). 
 
 Rpithemia zebra (Klu.) Kiii/. 
 
 This small meiul,er of ih.- tieiius was not eommoii and otilv oreuried in two 
 sami)les olii.iiiicd HI .luly and August. I<t|;{, at Teller. 
 
 Nr; .M iiiKAK. 
 
 Ilantzschia (iiun. 
 
 Ilantzschia amphioxys dihr. i Crun. 
 
 This spreies was found in small .lUanliti.'S in the lagoon lake at Teller 
 Autiust. I tl.i. in a tuiidr:, pond at Collinson p.,int. .Inn... 1<)H, and at Mernar.i 
 harhour, ,lune. I!M.'). 
 
 NitZSChIa Mass. 
 Nitzschia acuminata i W . Sm.i (Irun. 
 
 Only a h'w friisti.les of this sp.'eies were seen in a sample from th.. lano.m 
 lake at leller. It is normally a l.raekishwaler type. 
 
 Nitzschia Brehissonii W. Sm. 
 
 This speeies also was only recorded fr.ini the i.rackisli poi„| at Tc^ller 
 AiiKusI, Mtl.i, It IS ,1 l.rackishwater species. ' 
 
 Nitzschia Closterium W. Sm. 
 
 I'ik'' th<' precvdins; species this is a l.rackishwater tvpe and was found in 
 the lirackish ixind at leller. Hare, 
 
 Nitzschia lanceolata \\ , Sm. 
 
 This is another of the l.r;ickisli forms fi' the hrackish pond ,ii Teller 
 
 .Not common, 
 
 Nitzschia Tryblionella Ilaniz, 
 
 The type form of this species was found in the la«-oon lake .-it relit r, 
 .Nitzschia Tryblionella llantz. var, littoralis (irun. i .V. lilh.mlis (;,un,| 
 
 This diatom was found in tlii' lapoon lake at Tellei-, ,lulv and \ii^nist l<ti;5 
 and in a fish stoinach ol.tained at Hernanl harhom, OcloI.er 4, lOl.".' '\„t 
 aliuiidanl. ' ' 
 
 Nitzschia scutellum S.H.I). 
 
 This species was found in the same collection^ ;ii Teller as the last named 
 one and was about as frefiuent, 
 
 Nitzschia sigmoidea (i;hi. ) W . Sm. 
 
 Thi.s species was found in a mindiei of collections from Teller and in u 
 sample Iron the tundra pond a! Collinson point; also one fi,,stule in a fish 
 stomach. October 1, l<)|.-). at Hern.ird harbour. 
 
 Nitzschia sta&norum Hab. 
 
 Two fnistiiles of this species wi'ie seen in I he material from a fish stomach 
 secured October, 191."), at I. ernard harbour. 
 
mmmm 
 
 10 A 
 
 Canadian Arctic Exi>idiliui\ 1913-lS 
 
 Sunini:i.;.KAK. 
 Cymatopleura W. S;ii. 
 
 Cymatopleura Solea (Hnl).) W. Sm. 
 
 This iliatoMi wiis not coinnii.n, Ix-inn scon niily on two occusiuii-. Oik- 
 fn,.tul.> umnnMl in tl,.- .■-mtcnt of a lisl, stoUKul., ( '••t'>l«;'^,l. l"!''. ^""1 ^"" '"'"•^ 
 from the Uinninx Mvamp at llnschcl i>lan.l, AiiuU!-!, I'JU. 
 
 Surirclla Tuipin. 
 SurircUa arctisslma A.S. 
 
 Tl>is species was found only in a nui.l sample taken from the bottom of tho 
 hid lf>ke at Bernard harl)Our, Kehruary, lltlti. 
 
 Surirella fastuosa 1 hr. 
 
 This is a marine form found at Teller. 
 
 Surirella ovalis Hn'b. 
 
 This speeios occurred in the lanoot. lake at Teller and at Bernard harbour 
 in the bin lake, Septonber, 1«.)1.-,. and in a fish stomach taken in October of the 
 same year. 
 
 Surirella recedens A.S. 
 
 This species, sometiu.es reniirde.l as a variety of S. fashw.o, was found 
 only at Teller. 
 
 Surirella reftina Janise. 
 
 This also was found only at Teller, along with .S. fastuosa and S. rrcedcns. 
 Not conunon. 
 
 C'ymiu.li.v.ak. 
 Amphora Ehr. 
 Amphora ovalis Kiitz. 
 
 This species was fairlv abundant in the laROon lake at Teller. It was 
 exc.-edin.dv comnion at B'ernard harbom'. appearing; in plankton and other 
 collections frr.m the biir lake in June, July. August rSeptember and Novcn.ber, 
 19 -.md February, lOltl, also at the cre..k mouth m .b.ly ,„ a hsh stomach 
 OctolKM" 191.-^. and in the brackish pon.l, August, 191... It also occurred at 
 Herschci island, August, 1014. 
 
 Cymbella Ar. 
 Cymbella cistula Hempr. 
 
 This species was found only in the lagoon lake at T(>ller, August, 1913. 
 
 Cymbella cuspidata Kiitz. 
 
 This species, like the last named, was found only m the lake at_ Teller 
 July, 1913. Some of tho species varied and wore approac.ung the form of 
 CyinMla hcteropkura (Ehr.) Kutz. 
 
 Cymbella gastroides Kiitz. 
 
 This species was almost as frequent as Amphora oralis Kiitz. and was found 
 in the same localities; at Toller, in the lagoon lake and brackish Pond Jtily and 
 Augu..l, 1913; Herschci island, August, 1911; the creek moutli and h,g lake at 
 Semard harbour, August, 191o, and February 191G, in both bottom samples 
 and plankton. It was also found in the Ophrydium mass, August, 1915. 
 
dcn.1. 
 
 Frrxhwatir Dinlnm.') 
 
 11 A 
 
 Cymbella gastroides Kut/. v.ir. minor II \ \i 
 
 Cymbel! ventricosa An. 
 
 Tills s|K-,.i,.s was f.mii.l (,t,ly in one locality l.iit was vnv plentiful It „■ , ■ 
 obtawuMl fron, the t.o,l „f tl,.. war,,, .Took n,.ar-.ho Sa.llo,o!!,l, nv. , ' ' 
 
 Cocconema I",hr. 
 Cocconenia lanceolatum Ehr. 
 
 « T;i,l:^SS:;:s,i^ >Kr:-,.™;;''';;;-ix- ---;!-" -■> 
 
 X.\Vltri.OIt)KAF. 
 
 c» . „ Stauroneis lihr. 
 
 Stauroneis Greftorii 1{ ilfs 
 
 Stauroneis Phoenicenteron i;iii. 
 
 This spooics was fomu; onlv in flio Mtr I'lko Mt lUrr.,,-.! i.„,i . 
 
 appeared i,. .no mu.l sample an.l one planklon ;:,n,H;ir "'"' '''^"''" '' 
 
 Stauroneis Smithii Crun. 
 
 This speeies o.T.irred in small nuniKors in the laRoon lake at Teller. 
 
 ., . , Navicula Hciv. 
 
 Navicula aspera I:1h 
 
 Navicula Bombus Ehr. 
 
 ob,ni^!^£ ?.^'i;tK",r™£:™,?-,;il-ri-;;, p- 
 
 Navicula borealis Ehr. 
 
 It is?f;:E:.°dia"n' '" ''"' '"'^' -^"^^^'""^ f-'"" ""■ '^'^•-" '■^^" =" ^••^"-■- 
 
 Navicula Braunii Grun. 
 
 Bo^^^^t^::;:^^,^:^^^"^^ '^^^'-^^ - "- --t n^ntloned one. 
 
 Navicula Crabo Ehr. 
 
 Tell J^y^t^jrr. ''''""" "''^' "'^^ '"""' °"'^- ''■ '"^'^ l^-'^-^ P"-l at 
 Navicula didyma Ehr. 
 
 This is another marine species found only in collections from Teller. 
 
r.' \ 
 
 <„„>i,l,n>, Arrt^r Ex,«>ldm,i. V-H .i IS 
 
 Navlcula elllptica Km/ , 
 
 uiii\ Ml 'ri'iifi 
 
 Navlcula fusca < Ik n 
 
 Tliis is a miinn.' -|"ti.'s which wa- (<'i 
 l:,i,|v plfliliflll. 
 
 Navlcula fusca c.ii vai delicata A ? 
 
 Tlii^ varifly a|)i><'antl in I 
 ;,,i.l our.' ill Alll£ll^' ,<.li.ctinn> 
 
 Navlcula llenncdyl W Sm 
 
 ,n.l al 'I'.'ll.'i. .Iiilv. I''li. " «•'■' 
 w^,"^,ll,rtioM.|ru.>.T.ll.V...MC.'.l..lul> .nll-rtl..;.. 
 
 ,, JJ-^ ;;:;;,.... !'k..i.f. ,.....,.. i.k..iv..ma.y.iiM... 
 
 Navlcula lUrrhcockll i'.lir. 
 
 Thi- -,— vas foi.nil onl> a. T,.1..|-, m .>„■ la^o.-n lak, . l.M.l. 
 
 Navlcula humerosa Mi.-.'. , , ,.: ,, ,>.,„.i ... T.II.t an., li"". 
 
 S'::;;r";'i;™,«n;;.r;;i:r;i;;.ts:^:;''.;:;:;-' -"-■ 
 
 ^!;i'r"i'v™,x;'utir;;i,;::;,,::n»'.i:.' ^ ^ -"■• '- " 
 
 till' 0/>/i /■//'''""' lini"'~- 
 
 ""^:: :!i:^::'::;r ': - ; ;,r;x";;",ii-:ri;;,sr"- 
 
 |!.l.-,. :'".l 'l... .in ll.,- Dph!,,!..,,,, i..»" l,..„i ll..' 1»1>. 'I "' 
 
 ^°''^::::r,';;™-......- "■ '--' "■•■" " "^ 
 
 lake at 'rCli'i-. 
 
 Navlcula mesolepta Khv. , ^^.^^ 
 
 This , l.a.om was founain. ...-am- ^catli..nnu> .-...' L" 1» 
 
 s.iiiu'wliat iiii.ri' iiiiiiKioiis. 
 
 Navlcula nobilis i:iir. ,.,ii„..,i.,ns and was usually 
 
 This hir^.. .liatn.M =M'1'<'=''''1 ''•''•;; ';;„,,;,,,,,, j,. „„. „„.. san.,...'. It 
 
 :xi-:;;s'rSs;St::'::n'';:i"'i..!' — ^^'-' -'"^'^ ' 
 
 B,.inai(lli:iit.our. O.K'lx'i' 1- ''•"•'• 
 
 Navlcula ovalis W. Sn,. , , „, ^, „„„, ,;„„pi,. 
 
 Xuon '.'''l!t 'iv',ra''.L..kis.i ,han a fvshwa,.,- ..... ...n. 
 
l-'ii iliiriili I- />(f»/i>W.<- 
 
 »:( \ 
 
 I -4 
 
 i 
 
 Navlcula piUpebrallfi Hi- 1' viu. semlplena <;i.t 
 
 'riii« VMiiily was not iliiiiiininoii in -nine ul llir 1 i.ll.it iitiis troiii lli> lukf lit 
 'I'rlllT. Willi i'IkIH Wi'lf M I. W S| illl. II- Wlli<'ll HMIii.d t.. I..' Illl.lllir,ll;ilr 
 
 Litwrcii this VMiiclv Mini \. (/«(;ni(.« W. Siii. 
 
 Ni'vlcula punctulata W . Sm. 
 
 Tliis WM- onlv loutiil III llic >.niir .■..ll.Tiions m> \\\f l.i-i in.nii •.! -p.'.i.w 
 
 Miiil i- ii Inv-liWMirr fuiiii. li wa- s|i«liily iikt.- lunminuv 
 
 Navlcula radlosa Kui/.. 
 
 rhi-' -pr.i.'s WHS Iniiiiil only ill 1.11. saiiiplf lakni ti"iii ili-' ''iK l.ik.' at 
 Hciiiiiid liailwiiir, S'plcnilxr. nU.'i. 
 
 Navlcula SiHcula I'.ln 
 
 rills SIMCM- WM> fuiiii,] in -IIKlll nilllil"'l> IN Ihr laKi.011 l.nllii Ml Irlln, Mini 
 urirr ill thr lnMikisli iMPiiii ill lliat locality. 
 
 Navicula Smithll i'.i.'l.. 
 
 Tliis i- M iin;rinr >pr.i.s ...■.■iiiiiii(i only in a lew saliiplrs ol.tain.'cl .Inly, 
 I'MH at TclliT It was iioi vnv plciitit'ul. Sonic of tlic sp.'.ini.'iis wnv soiiir- 
 what' i'honil.oi.1 in oiillin.' and may ivpirsriil a new vMii.'ty ot tlir sp..,i.-s. 
 
 Pleurosljima W. Sm. 
 Pleurosifinia anftulatum \V. Sm. vat. strlftoBum W. Sm. 
 
 Tliis is aiioilici- of the niariii.- forms appcaiiin: (.nlv at Tillii. Tli-' oMuiue 
 lines on the valves cut each otliiT at an Mlicle of .V.°. 
 
 IMeurosijlma attenuatum W. Sm. 
 
 -riiis was fairlv com.non in son f the colh'ctions. It was lo,in,l al 1 e Her. 
 
 < ollinsoii point, HeiiianI liaiLoiii-. ami in the stomach ot a (isli taken ,,t the lallel 
 iilace, October 1, I'.tl.'.. 
 
 Pleuroslftma Fasciola \V. Sm. 
 
 This s ■■ie- was found a few times in the iiiMteliMl trom the l.iMcki-h poml 
 ;,t TcUer. lormally a iiiaiine species. 
 
 Pleuroslftma hippocampus W. Sm. 
 
 This I- a l.iMckishwaliT sj.ccies thai ai-peaied in a l.racki-li pond al I eller. 
 
 ll was iiol ph'iitifiil. ,., , „ 
 
 .Vmphipora (l.hi. 1 ( lev . 
 
 .\mphipora ornata Hail. . 
 
 This spi'cies appeaic.l ill collections from Teller, m 1 he larooi, pond. II. a 
 tundra p....d at Collinsoii point, and also in the l.iu- lak,. and l.iackish pond at 
 
 Meriiard harliour. 
 
 ( Iomi'iionkmk.m;. 
 
 Ciomphonema .\k. 
 
 Ciomphonema cristatum Hall's , , .. 
 
 This spe.'ios appeared in very small <,iiMniities 111 thic hM-ahties. in the 
 mJli. sva.np at llerschel island, in the l,ed of the warm creek m northern 
 .\h.sLl (near Sadleiochil river), and in a I'oi-'"" -^"iiple trom the .ake al 
 Hciiiard harhoiir. 
 
 { ncCONKlDKAK. 
 
 Cocconeis il'.hr.i <'.riin. 
 Cocvoncis placentula Kin 
 
 Thi- species oc.urre<l .mlv in two collccti.ms Iron. Mern.ard harbour, viz.. 
 ,n,m the creek mouth. July, lOi:.. Mild ... a mud sample tr.mi th<. lake bottom, 
 I'.'bruurv, lOKl. 
 

 
 1'^ 
 
h'rtiihwal>'r Al'j'i'' 'tnd Diatoms 
 
 tj A 
 
 PlATl 1. 
 
 y<ii- 1- 
 
 rmiHiuinir vii'W ot IlrriKinl ImrliNiir. .wi-ii fniiii tiilm' to the soutli. sliinvinn tlir ■riM-k outlet 
 triiiu the lake oml a Miuill \omi w i\n- (tir.-t'H.uinl. The tifw 8i»;(ic» fusmanum .^.'.jumnuiu 
 «a< fiiund in tliin iii-.'k. Auku^i, I'.M.'i. Iinili> 1. J-linnsi'n. 
 
 l!2. : 
 
 Shalbw tun.lm pnn.l in swan.p at lleriiard l.arl.our. AuKUst, 1815. Vl.olo F. Johanscn. 
 
Fifslnnilir Alijiii nml Diiiliini.i 
 
 17 \ 
 
 TniK II. 
 
 - -v--aj5»^^8fe>^ 
 
 ^^CJg- 
 
 liir. I. i.iirnr lake at KdliKHmnik. (uindfli \m\ 
 
 tii.u.Tii.!! plants, .lul.v, lilH. I'liolo K. .lohanscn 
 
 Notu till' l.n.ail 1m-1i in tin' t..ir(!ri)iin(l "f :uiliali<- 
 
 liK. 
 
 r,,n,l ,.v.T(£r"»n witli llipimnf. l-:n„i,h„rum. Cms. .■! 
 from tlii> s»ain|) tliat tlie comparativrly riili ilcsiniil ll.'ia wa 
 I'. .Iiiliali-i'ii. 
 
 iilaiiil ■'" HitmIii'I i^laml. It «as 
 rvil. .Iill.v, Ittlli. I'lintu 
 
48 a 
 
 Canadian Arctic Expedition, 191S-1S 
 
 Fig. 1. 
 Fig. 2. 
 Fig. 3. 
 Fig. 4. 
 Fig. 5- 
 
 Fig. 6. 
 
 Fig. 7. 
 
 Fig. 8. 
 
 Fig. 9. 
 
 Fig. 10. 
 
 Fig. U. 
 
 Fig. 12. 
 
 Fig. 13. 
 
 Fig. 14. 
 
 Fig. 15. 
 Fig. 16. 
 Fig. 17. 
 Fig. 18, 
 Fig. 19 
 
 Plate III. 
 
 Pediaainim glanduliJeTum Bcnn., X 400. 
 
 integrum Sag., X GOO- 
 Selenastrum acuminatum Lagcrh.. X 1000. 
 
 (,7oe..c!/8(i8 injusionum (Schrank) W^^nd G. S. VNcst. 
 Penium spirostriolatum Barker. X oOO. 
 
 " crudjervm (De Bary) V,Mt.. X 500. 
 Comamm C«c«,6.(a Br6b. -"• ""-"^ ^^f .^ri^ (Lund.) W. and C. S. West. X 500. 
 
 Co.m.rium l"^^--"-X:^,^ ^ ...... (Nordst.) Schmid.e, X ..K,. 
 
 4r(Arudesmus Incus (Brtb.) lla^s- \ar. /w j 
 
 P(e«™(u«.iiim Tratecuia (threnb.) Nag. '".^""'V'^ '' ^y ^„j cj. s. We.t, X 400. 
 ,.,„„..„c^.. K.eb„. va.^^^ ,. ... C. S. .0. X ... 
 
 .. .ncon^picuumW. and G.S. West. X 500. 
 
 a.(a«t.vi..w; b, sid.- view; c, end view. 
 
Freshwater Algae and Dialuma 
 
 40 A 
 
 Platk hi. 
 
50 A 
 
 Canadian Arctie Expedition, 1913-18 
 
 1. 
 
 2. 
 3. 
 4. 
 5. 
 6. 
 
 Fig. 
 Fig. 
 Fig. 
 Fig. 
 Fig. 
 Fig. 
 Fig. ". 
 Fig. 8. 
 Fig. 9. 
 
 Fig. 10. 
 
 Fig. 11- 
 
 Fig. 12. 
 
 Fig- 13- 
 
 Fig. H. 
 
 Fig. 15. 
 
 Fig. 16. 
 
 Fig. 17. 
 
 Fig. 18. 
 
 Plate IV. 
 
 Cotmarium Cucumis RaUs. X 500. 
 
 Sufccucumij Schimdlc, X 5UU. ,v-„r,Ut 1 Rore 
 
 trachypleurum Lund. var. minus. Uacib., X -iw. 
 .. sMumidum Nordst. var. Kleb.a W. and G. h. Wart, X 50. 
 
 binum Nordst. torma, X 500. 
 globoaum Bulnh., X 600. 
 ^Jaur<ui(rum RwscAit Koy, X 500. unpaired process (i). 
 
 ^r '^S';^ ^-^^^^ --- -'" -■"^■'-' --- 
 
 lunatum RaUs. y^ 
 
 Br^6i.s- ■.« Archer, small spines at angles, X 500. 
 
 ^no«-:Srtb., X500. 
 
 jMchyr-i.r.chum Nordst., X 500. 
 
 STc^lit X::^"h^in^ariat.n in .. and ..ape, all X 5«(,. 
 
 S'cvhrocyiium obesum W . VNest , X 500. 
 flomphosphacria aponina Kutz., X 500. 
 
 a,IiKCview; b, side vi-w: c.cn.lvi.w. 
 
Freshwater Ahjae and Dialoma 
 
Freshwater Algae and Dintomx 
 
 PlAT« V. 
 
Report of the Ca .r,dlan Arctic Expedition. I9I.M«. 
 v«u«K vi„. M«,.M.KH. kmiin«,„;bhh. c,».t.y.srm xTtH rn 
 
 Vm B: { El HAIOroOA ANT* l'Ti:i(()|.()i,A <''""' ■"''P"m'rr »«. ,w».. 
 
 « I'l.liiil., ,«la lly > s. iLrry. 
 
 J. lUIClI l.KA, II) A DriKly (/«K.li /«!««.» „,yf)' 
 
 ll«l. I\: tNM.Ml.s, PAHtsmr WOKMS. nioro/0\Ns HI 
 PhH A: ()I,I,,()(HAKTA. "•ii/;im>>. kM. 
 
 I.uinl,ri..ulhl.,.. By Trunk .>TMi.|, 
 P«rt n. Pf^i v,' .I'K'V!:''"- "v I'liul S. U,.|^h 
 
 " ■■ H ' ', ,'s';r^„"^ ''.'W' V 'i.lboriiD:: ;:;:;: a..«-., s,„v„,j,,, „. ,,,„ 
 
 Part f;-H. 'I iji Vi ,-vh,,'.* ^- '^■< "t'l' ,. (/•»«(/ .l;ir,/ ,•. i;ttfl\ 
 
 PS {;s'i',;i;jsK,,;'iW^- "-■'■"»" —»—.. 
 
 Part M. hYlliAuiv'iY..'n*l"'- .• ■^''"■"' </n /"•■p<ira^,«,i, 
 
 lartM. ^01UMIM^KRv. ItyJ A. Cu,(,man i /, • • ('■' rrn,ar,„,.,n): 
 
 W.LIMI, X: PLANKTON. IIVDBOGIIAPIIV. TIDK.S. FTt 
 
 P«r ": Tir Vl ?M l'> v\^^^/„"y '- «• '"'W "" rri,.nra>ion). 
 
 Vln k i'^^i^O^'^fiJlJ^V'OXS AM> HICHULTS-nlyW/neU ,)a.»,. ■•,/„;,«//;^,j;;:-7Vij;;!- 
 
 VOMM. X.: «.OLO«T AND G«„««a..„v "^'"'"-'-' 
 
 Par. ,,.MAM .so c.KOO,^r„,,.,, ^OTES.ByK.„„HhOCM^^^^^ 
 
 (In !"■' inration) . 
 
 VOLtMK XII: TnH COPPEU ENKIMOS 
 
 r.r. V TEC f,^*'"*' ""'"' '"'^^"^"'"^^ ""^ "rn^^ «om:u ESKIMOS 
 
 I m A. TEC H.NOU)C Y OK THE CnVVKR ESKIMU.S 
 
 ^loht prepared). 
 
 I''' vrepiration). 
 
 \OLlMEXV: ESKIMO .STRINCi FIG I RES AND SONG.S 
 
 ^^^^-^ivf y^l1-»---"" "^"^-"- -'^/— . 
 
 Py Helen II. Koberu. un.l I). Jum„ ,. 
 
 (/" /"■<parq(ion), 
 
 VOI.IME XVI: AKCIIAEOLOGV 
 CONTRIBtrrrnxs TO THE AR.;,UEOLOaV OP WESTEax AUCTrC AMEKICA. 
 
 (To be prtpartd).