CIHM ICIVIH Microfiche Collection de Series microfiches (l\/lonographs) (monographles) Canadian Institute for Historical Microreproductions / Institut Canadian de microreproductions historiques Technical and Bibliographic Notes / Notes techniques et bibliographiques The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checked below. n n D D D D D D D D D Coloured covers / Couverture de couleur Covers damaged / Couverture endommag^e Covers restored and/or laminated / Couverture restaur^ et/ou pellicul^e Cover title missing / Le titre de couverture manque Coloured maps / Cartes g6ographiques en couleur Coloured ink (i.e. other than blue or black) / Encre de couleur (i.e. autre que bleue ou noire) Coloured plates and/or illustrations / Planches et/ou illustrations en couleur Bound with other material / Reli6 avec d'autres documents Only edition available / Seule Edition disponible Tight binding may cause shadows or distortion along interior margin / La reliure serree peut causer de I'ombre ou de la distorsion le long de la marge int6rieure. Blank leaves added during restorations may appear within the text. Whenever possible, these have been omitted from filming / II se peut que certaines pages blanches ajout6es lors d'une restauration apparaissent dans le texte, mais, lorsque cela 6tait possible, ces pages n'ont pas et6 film6es. Additional comments / Commentaires suppl6mentaires: L'Institut a microfilm^ le meilieur exemplaire qu'il lui a 6t6 possible de se procurer. Les details de cet exem- plaire qui sont peut-6tre uniques du point de vue bibli- ographique, qui peuvent modifier une image reproduite, ou qui peuvent exiger une modification dans la m6tho- de normale de filmage sont indiqu^s ci-dessous. j I Coloured pages / Pages de cc Jleur I I Pages damaged / Pages endommag6es □ Pages restored and/or laminated / Pages restaur^s et/ou pellicul^es r~K Pages discoloured, stained or foxed / ucl Pages d6color6es, tachet6es ou piqu6es I I Pages detached / Pages d6tach§es [vj Showthrough / Transparence □ Quality of print varies / Quality in^gale de I'impression Includes supplementary material / Comprend du materiel suppl6mentaire Pages wholly or partially obscured by errata slips, tissues, etc., have been refilmed to ensure the best possible image / Les pages totalement ou partiellement obscurcies par un feuillet d'errata, une pelure, etc., ont 6t6 film6es k nouveau de fa?on h obtenir la meilleure image possible. Opposing pages with varying colouration or discolou rations are filmed twice to ensure the best possible image / Les pages s'opposant ayant des colorations variables ou des decolorations sont film6es deux fois afin d'obtenir la meilleure image possible. D D D This item Is filmed at the reduction ratio checlced below / Ce document est f ilm^ au taux de rMuction indique ci-desgoua. lOx 14x 18x 12x 16x 20x 22x 26x 30x 24x 28x z\ 32x Th« copy filmed hare has baan raproducad thanks to tha ganarosity of: Stauffer Library Queen's University Tha imagas appearing here are the best quality possible considering the condition and legibility of the original copy and in keeping with the filnning contract spacificationa. Original copies in printed paper covers are filmed beginning with the front cover and ending on the last page with a printed or illustrated impres- sion, or the back cover when appropriate. All other original copies are filmed beginning on tha first page with a printed or illustrated impres- sion, and ending on the last page with a printed or illustrated impression. The last recorded frame on each microfiche shall contain the symbol -^ (meaning "CON- TINUED"), or the symbol V (meaning "END"), whichever applies. Maps, plates, charts, etc.. may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. Tha following diagrams illustrate the method: L'axemplaira filmA fut reproduit grice i la gAnArositA de: Stauffer Library Queen's University Les imagas suivantes ont At* reproduitas avec Is plus grand soin. compts tenu de la condition at de la nettetA de I'exemplaire film*, et en conformity avec les conditions du contrat de filmage. Les exemplaires originaux dont la couverture en papier est imprimie sont filmAs en commancant par la premier plat et en terminant soit par la darniAre page qui comporta una amprainte d'imprassion ou d'illustration. soit par le second plat, salon la cas. Tous les autres exemplaires originaux sont filmAs en commen9ant par la premiere page qui comporte une empreinte d'impression ou d'illustration et en terminant par la darniire page qui comporte une telle empreinte. Un das symboles suivants apparaitra sur la darniAre image de cheque microfiche, selon le cas: le symbols ^^ signifie "A SUIVRE". le symbole V signifie "FIN". Les cartea, planches, tableaux, etc., peuvent itre film*s * des taux de reduction diff*rents. Lorsque le document est trop grand pour iua reproduit en un seul clich*, il est film* * partir da Tangle sup*rieur gauche, de gauche i droite. •t da haut an bas, en prenant la nombre d'images nicessaira. Las diagrammas suivants illustrent la m*thode. 1 2 3 1 2 3 4 5 6 MICDOCOPY RESOLUTION TEST CHART lANSI and ISO TEST CHART No 2 1.0 I.I ^ Jr Ilia t 1^ ill 2£ !l-25 11.4 1.8 1.6 ^ - APPLIED IM^GE In ^S-, '663 tost Mo.n 5"«t Sr^ »ocr,«ste». Nt, Ycrh Ufi09 u-jA — — ■ '^^5 ■•82 - 0!00 ■ Phont REPORT OF THE CANADIAN ARCTIC EXPEDITION 1913-18 VOLUME IV: BOTANY PART F: MARINE DIATOMS By ALBERT MANN SOUTHERN PARTY~1913-16 " 6 70 ( 191:;! i: ::t V. or)4 pi .1 I. . .J OTTAWA F A. ACLAND PRINTEB TO THE KINGS MOST EXCELLENT MAJESTf Issued 12;h Novembrr, 1925 Report of the Canadian Arctic Expedition. .*.3-.«. (■yVu.i'.ipl'l^'"'-""-^"'''''''"" -u-,''.';,v;:v;.v^m';:^'h- ( /.)(«■ prcpa-td). .1 u i - I 1 I. ^ > '' . 1 !• \ 'l :iviTnt'r. , .,M.^^i:.^,■^^^.K..•^. ,w u. M. An-.,...-,,,. -, .v „, j,,,„ \M\MMM /. M»H Mr III. IN^H '" ( ,„,.i::i 1 .ua,i 1. s\i.Tiiiiin,.lr. \S„,,H„n.ll...- ,1 >|,„;,,.r!Mt .. ' •■ V'r;' \uTi ~ Vm> mm;i\i''">-- i/ssuci .%'•" /--A- :•:■."'"■'. v,';^,. P.rtL:GENKilAi:'l^ni:X. ils,u.dU'C:mh.r, 19.3). i..rt A;nu;suwAn.u.>i''A.. ^ , . ;■ „,;--;;. /.■:;/;'/;:: ■ ■ ,,,. ,.,.1. ., ,„n.;.u..:iA'.A:ii"«'o •;-::: ^^^i!!:^'^,-vV.^":^-r- ■...■..■■■..•■■■■ ■I'JdF.'hruarytO.Wti. ,;„ ;,,, jMr..ir..ri.. Xhsuei Jum I. i»JS ■ ...(/ssued *^-*'- 1'-' ^^\'^'!lirsN<'nv!'"l"A:.;.ii----''-' V... l'..A>'n.lAN .1. ^.,„,,.„,, V..: rUfSTArKA ,,.' < I'v V ..v.l. lUitlil.un 1^;:^ ^^^H'ir ;:!^:?:^ii': '■-■^'-::^"'^^ .i/ri pr^ ;iin-"' ■! . ih.'I.M« h\ Aim i.r M wv Diilt.Dnlif, Cirniiji,- l„stil:ilii„i. M'llsliiiiiih,,). Dr. riic fi)ll.>winu; r<'()(irl is » r:i\\wr fr;iiiiiifii\- ,.f lie is disposed loa-siiiiie that t nd the loiiir winter niijlits ,,f these hiKi: they are known to do some oth < liess of stniitiire and il lalltudes must alTe. t the di it irKaliisiiis, eheekiim a leiidinev to rial no sati.faclor\- e\|i|an- le riuoioli' teiiiperalur.'s 'iins as nseip. ,|v to that vaiial.ilil lorati hile (rive us those dilTerenres on whiel. we detiend for tl And in fact we do find that the Aretie diat V which would afler III' ^I'paralion of speeii fo 'Ihi and mneh less elaliorale in their I'Ifions. Imperially is there a piepondei "IMS as a elari, II' s|)ocies cvidi-ni and unusual -implicily of the diatoms ... lose here recorded, we would he pretty sure t were to dr.iw deduclioiis ffom t| of all .\rctic nail lo had I [■re I tion. •roimlit into cMslence a flora -iiiuulai ly suppressed ii'iini:-. :iic|i|iliii(r o infer th.'it cold and darkness in il- oiliaineiita- Hiit a study of the diatoms of the Ant inilcii St res 'II ihi- iiihiliitioii of low t ilenyintJ wholly its influence, we find .ill the A waters .and lont; periods of iii,ihi ociu.-, one of tl uctic seas forlpid' o cmperature and dark tiriiamented iliatom tl primitivi 'iliiid oras now liviiiu. r other -yinmetric.al sli.a) plcx scuiplinin« and ii varielv of li Kioiip is in the deciiled 's lieiim more common, and iisu; piiMiim ID Without iiall> fiiiiid . el.iliorately perhaps more minorilN , .oimd polynonal ;tnd tl nt.irctic. where urieij a r .•,-id *le liio«t le (■•Mile .'Uies. for tl till If therefore friuid t lorns. sp 111 temperatures .■iiid I' Miiiplicity III structure and p and oi 'i winter iiii'Jii- )o\i ily of specie- of liie .\ii 1 dm lied with com- inament.'il appiiid- are respohsildfi ic diatoms our .stated ■y only conjures up another eiiually ditliciilt prol.lem, nainelv wliv tl lactors t;til to opcr.ate in the .Vni.ircii Kv onlv twi condition due to the fact that l.olh the K 111 is joineil to the v.asi si their liroad areas at the ex ward; so that the sh A. a and on the cast to th lores of North .Vine Ireme north and t conipar.atively narrow channels, .a isterii and the Westeri 1 hemisphere iper away to a point soiith- ica on the west are close to those of •iirient into the .\retic in tlirouKh the narr lose ot J'.urope; and further .lore, the chief innre.s.s ot these two oiieniiiKSj namely Cnmdiar, Arctic K./.-'/fm... 1913-18 4*" v^"""- „„„l..n,i and SpitsborRpn servos mainly f"^,f , °" 'VVintorpospcl bet worn it =^"^1 *^f "^^ fi\,"\p;^.lilv seen mmmmmmm sr,S',:r.Ktr„;™ ^-^iiiKr-ii-y;;.'"; ;«-" » - Irhaps l»"ll>' '■™'"''' "" , ,,..,„ ,h„ torrcoinB that .liatoms lin.l an North Polar ^^^^.'^f ;;;;/," adapted to a life i"/'>"^*;, "^' nhol tl at do prow ;--rS'Sa;;vS'":i,Xf|s^^ &r;-lc Sc^s-- *?^!^^^ disappears; fo. in 'ic ^ ^ ^^,„iii,j, only.with n ater.al eon i^ ^..^^^psts SH-rr'''>nd's(.uthern polar seas. of diatoms here ve- covered. 1 his ^^'•^*^'" fi„,,_,,^ ;,, , I atom pul)heation> .n<- > ^^ ,,, u^ worth ess. ,,,,a.d because many fi^ur^^^ , ,^,,,,,,,.i ;„ ,i,..„. •"^;'»<'J^^;;; ft whom a n.ore importan . are ^" > " h,„,a,ions made ^ •>■ ,r'"'^>. 'J;^; '" , ,„: q„i,e satis- This is P="-t'''" '"'^.y \' lia o.u thev were '■'''•''.••'»V'^''^r7''; then known to .ketehy ^"Rf^S-*r "„ Ihed n », the eomparatively f^.^^J^^^'^^'res and des- faetory if it ^'r^'^^^'^^^Jnee we find that to-lay n^*^";., "/.y;' ?o^ purposes of Iheseienee. J" '^'"*;^i^^;X have beeome "t''''-'> ./^^S^Tng ^''■ criptions .n these old ^^^^, Ehrenberp, -^pardh KuU.n^ identifieation ^f . .^""^^flh'ese old named ?«""«,/ '"rtothesr later, sharply one hand, assigned t^ the sam ^ ^ ^^^^^^ g d. This has cm important hand, have given »«^"^";^r Chiefly because ot the r'^"/> "^ J^^g^^™ able to con- ly through £rel«sbut^ch«.. 4 VtcfrsS-tthw'hile to correct Marine Diatoms 5f to those illustrations and dosftiptioii the species in question. Only the species that are new or tluit show exceptional variation, ..,,.„ ,,„• type forms are illustrated in this paper. The species recorded were cullccted hv Alr. F. Johansen and tlie localities are as niven in his field list of rein recorded. '" ' ' ' ' properly labeled slide; so that the named, so difficult to locate on thi I'/ich specimen is mounted separately on a difficulty of finding the individual diatom . . ordinary strewn slidi>s, is wliollv avoided. All the specMuens m the .Museum diatom collection are freely availahle for examination hy interested diatomists. The nomenclature followed in this report is that which has received the general approval of diatomists. It rejects .some ohscure names which a few authors claim to antedate and he synonymous with those in common use such as, Te-JseZ/a for Rhabdoncma, etc. The author feels that sufficient doubt' exi.sts as to the Reneric boundaries of these archaic names to justify their abaiidomnent to the oblivion in whieli they have long repo.sed, especially iis much needless confusion must result if they now .supplant the well known'and classical names nsed in our most viluahlc diatom books. This is the position taki'ii by Van Heurck, DeToni, Schmidt, Urun, and the majority of diaKmi writers. There IS also a rejection here of the set of new generic names proposed by P. T. Cleve (see Cleve's Xaviculoid Diatoms) for breakiiiK up the hune n,.,i„s 'Xnviciila into more compact divisions. The Renus is unwieldy: but the writer agrees with the above mentioned diatomists that these proposed new Kfiiera are too misty in outline to be workable, useful as they may be for subgeneric grouping. There is a chance of confu.sion in the record of the marine diatoms found by the Canadian Arctic Expedition becau.se of a report already published on the fresh-water diatoms of the expedition. In it quite a number of marine diatoms are included. Its author, Mr. Charles W. Lowe, is careful to refer to this in his introductory remarks and to explain the reason for the nii.xed character of the diatom flora, as well as the fauna, found in some of the ponds and iauoons ad- jacent to the sea. He also notes the marine character of many of the species in his list. I find there are twelve marine species in the list wliich do not appear in the following enumeralion, because the writer has found no s|)-cimeiis oi tlu-m m any of the marine gatherings secured, and not havii g seen Mr. Lowe's speci- nuT.s the following additions to my list are ou his aulli.)rit\ : (!raiiii)into])horn nnfiulosn Khr. Sec vol Xnriniln Crai .» ]';hr " Xaricula Ileinifdi/i W. Sni. " Xmicidii liuiiKrnsa lireb. " Mtsfchia acuniiiiata (W.Sm.) (Jrun. ^itzsrhia Innrrohilfi W. Sm. <>ji< plwra Srhwaiizii Uinm.) P. Petit I'lcurosiyma hi ppocnni pus \V. Sm. Stauroneifs Crt'ciorii Ralfs Swirdln fasluimi YAir. Surirdla rccedens \. Sch. '^''"iffiid i'CiJuia ,Iaii. IV, Part A, p:ige;!(u 41a 42a ;5!tA 37a. 43a 41a 4()a 4I)a 4()a )f this report 6f 6J>: \2h-c-ih 13' '■> " • ••""' '*"• ' 1 it :,»' 30' N.. loi.R. I.V.I" 12' ^^ -, Juno 1, m.i. piauktoii-iK't at r^urfait'. BkUinc. Ska r u !.•> T.,t (V>°\ lunK. 107° 30' W., -July 7, Off caiM- Konianzof. Alaska, l.at. K- a., luu), \v Inlv 30 li»13. Plankton-ni't at Mirtafo, ^^.lu. ii_. , ;j,ine llK-^ity an,l date. B.am-trawl for lo nunutos r 2-foot alcai". AVCTIC OCKAN 68° 48' N.. loHR. 105° 10' W. Aug. 40d: 41: 41!): 41c: 42b: 42x: 2-3 fathoms Same l.^'alitv and date. Heam-tra%M V;^" '■■;;,, ;,^,r Aug. 4. 1013. i'^rt Clarc.neo bay n.vay.^traneo to (.rant | arbour ^^S^ ^^.^^^ 2-foot boam-trawl for 20 minutes m 2-3 tat horn. 24' N.. lonR, 101° 2.-)' W., OtT Cape Li>l)urne, Alaska, l.at Hi 1013. Plankton-net at surface _ OtT 71° of Aus. 0, 1910. ;;;:1;E\'K1'1: ^ Si».--;'v;^;;^;r'*;^;a,i ...r,- „„„„„ .,»..».,. I.- f 4;;,,^;r.'';i ,;r /j;.£:,» V... "";■ 1910. Pla'>k*''"-"'^^^''• i" ' ' 'V 4 ot l.cam-trawl fr.-i sh,p for \'r=ir':"^.;.»ms:;i'«;:^-/sii„\u,.,vi,.,* j....^... •>4 191."). , ,-, f * =,.,,.,,•<> (hodirp for 20 mhuites f'^' ■■' "»" '• "^sr;.. i:« s »&».**"■ loeautv as Ul^. ^' P' 1-2. from iruiti'-r-boat. - - .;..„„. Bernard harl.our, Inner liarhour. ^anH lfll-'>- ,, , 1^ o lor, Water depth 10 feet. Tide-hole Marine Dintnms 7f 43a.- 436; 43c; 43: 506; Off Cockhiirri point, hat. 08° 47' N., Ioiir. nearlv 11.")° W Sept 13 1!U.). 4-fo„t hram-trawl. f„r 1 hour. About .",0 fatlmins of water! sandy mud with pcLhlcs. ' Same as 43«. Sept. 14, lOl.",, and off Stapvlton hav, 2.-)-30 fatlioni- 30 minutes tniwhnjj. West of Corkhui-n point. Sopt. 14, 101.^). lO-l,", fatlioms, sai.dv nuid with many stMics; 4-foot l.eam-trawl an.! 2' x 4' s.piare dred^f for 1 hour IiO<'ality and dat<> as 436. Locality and date as 43r. ]}(Tnar.l liari.our, outer harlx.ur. Oct. .30, litl.",. Hottom .sain,)!,.- sandy mud. ' ' Off Hernard liarln.ur. same h)cality as 42j-, l.ut on Fehruarv .", lOKJ Stapvlton l.ay. off Young point. X.W.T., I.at. OS" .V)' N." |,„Hr uqo o2 A\., July 17, K.IO, al.out 10 fathon.s of water. Plankt.'.n-net Ao. 3 at surface. LIST OF SPECIES AND SYSTEMATIC DISCUSSIONS Achnanthes Bory Achnanthes arctica (CI.) Mann Clevc Arct. Diat., PI 4, fig. 22. It is called Achnanthidinm nrdicuin in the ahove reference. Cleve chances It into a variety oi Achnanthes brevipes Ag. in Xav. Diat., II, p. 194, a doubtful assignment. Specimens were found in dredgings made at Stations 23 and 43n. Achnanthes brevipes Ag. \'an llcurck Syn., Pi. 20, figs. 10-12. E.specially abundant in a dredging made in Dolphin and Union strait west of Cockburn point, Sept., 1915, Station 43c. Achnanthes hyperborea Grun. Grun. Diat. F. Jos. Land, PI. 1, figs. 4-5. Found in a dredging made at Station 436. Achnanthes parvula Kutz. Van Ileurck Syn., PI. 20, figs. 25-2S. Found with the foregoing. Achnanthes rhombica Ostr., v.ir. PI. I, figs. 1-2; Ostr. Diat. \.E. (Greenland, p. 215, PI. 13, fig. IS. My specimen agrees in general with this little known species, an illustration wlHch is her(> given, because the type figure differs somewhat and is in an obscure publication. Ihc chief differences are that in mv specimen there is no central hyaline area on the lower valve and its costae are far less flaring at the iT'.T'nV.T. "1 , '" '•' ''^'''* iinS'ilar. Incid.-ntally my specimen is larger; length 0-041, width 0-014, 80 lines in 001 mm. (Ostrup's specimen having longth 0-034 width 0-012, 11 lines in 001 mm.). One Specimen, St U o- l! plankton haul. ' Achnanthes subsessilis Kutz. Van Ileurck Syn.. PI. 20, fig- Found rather abundan ' 21-21. lly at Stations 23 and 43a. 8f Cvi'i'llnn Arclic Espclitlun, lf)IJ-lS Actinocyclus Klu-. lllDM' fl'Dlll mill. Actinocyclus curvatulus .hm. Sell. Alius ri. r,-, tip. :». . , ^^ „^y i,,,s caiiod r».sT(«o- r.Min.hit Stations 2.iai.am | ' {"' ' ^ , , Lund I'l. I. fip. l'.. ami whi.h Haltray in Ins K.-v. ■^'■''"'V";.' '"' J ;/ 'j :J j ;, ' s i,s "pso.i.lon.Hlul-" Uatt. n.ay ..r n.ay not ho an -'/Yr ' / o v.m* w "■ |-.'iH<' ^^ ,„,.v,.s to 1,.- or not to h. ^'''''''V;'- J '' , ! ! ;^,. ' ,,t ipo-i.-s l.as an unn.is- form. ^'*'v3!"nrs"?' a mJSfc W- ^^- «n. . Diat., PI. .. fip- H, nnsnanu-d. rimnd in only on.- diclninn, Station ^iki. Actinoptychus Klir. Actlnoptychus undulatus i:iu . Amphiprora l.hi. Amphiprora kryophila (1. CI Wjia Diat.. I'l. :?.'>. lip. H- Found at Station -':}. a sinfilc spcanu-n. Amphiprora obtusa C...,. '//« ^/;a(.' (irun. m CI. and C.n.n. .\h1. .1> at;- ' ^' "^'- *^ !; plankton ^athorin^ tna.lo at Dolphui an.l I nion >tr,ut. Amphora Flu. Amphora an^usta(-.ro,.var.ventricosa'Cu-op.) CI. It is so.n,-wl.at plot.tiiul In .Irod^inps n.a.lo at Matu.ns 2.5, 2.., 1.56 and lo.. ^"^^:::^,^S^lS^Ki;>"V^ P.-.a.. Autar. F.p. Franco, PI. 2, «^-^£?=icalwitlHhotwofi.nr....iv.-n.^..o..^^^^ Van Honrck .-alls U An„^.,n, <''^'- I' ^i:;:^ '^ n thl^ ^-'i- 1 ^=^^0 ' latom^^^^ ^ ^^^^ ^^^ have unite.l it with li.lacns ^v'thout d s m« ^ n S -oU^^^^^ f j,.^,,^ ,1,, I^s'S-ciiTi; Ih-h nS;isiifi.b I-und in dre 41, 43«, and 43c. Campylodiscus striolatus Cirun. but calls it C. Kufzn>ir' Hnd., see us 1^^ ; t_; "P- \ " J, Horegouig figures are Alg., ].. tilO. quotes this Without m'l'."-"^: r^,, PI 9 fie. 20, and the co^ilJred -'^^^-•;;^ilf«-\,5[^' lear U^l^o :^n J b'm^ 'Found in SnJ^".- ^-!o.S^r^Xa^«. not abundant. Mtirinr Didtiimi Campylndiscus Thuretii Hrcl). \aii Hnirc'k Syii., PI. 77, fiji. 1; coiiipiiro Micro. Joiirti., 1M.')7, I'l. 1, Sc-hniidt statps in his Alius PI. 17 that ;i((()iihiiK to (iriinnw tiiis was proven iiv Hrchissoii to include ('. siiinihiii.i (ireg. (see secoml n nhove), and the two are Kerieraliy united. Dehv howeviT keeiw thi-in s, fiKiiiiiiK Imtli in his I{ev. Camp., Pi. 7, where tiiev are (piite dissiniili most authors also include here C. jxirruhis W. Sm", whid,. if the same replace holh the other names. Without access to the actual >pi cimens' tollow the fjeneral nomenclature, ("ertaiiilv Hrel.isson's oriKin.d finure i Cherhourn, PI. 1, fi^. 3, is utdik.' any of these. In most of the dredjrings, partieuhu'ly from Stations 23, U, iMi, 13f II y fiK. 41. species 'feii'iice ■|)arate, r. Mut should 1 must n Dial. 433. 1 Chaetoceros IChr. Chaetoceros atlanticum CI. Cran Xord. Plankt., p. G4, fig. 74. Sch. .\tlas, PI. 337, fiRs. 1-2 ,o i .I^^r^"* in mo.st of tlic plankton hauls, esppcially from Stations 12(/, 13a-c, 18 Im, 40(1, and otia. Chaetoceros boreale Bail. Gran Xord. Plankt., p. 73, fiR. 87, Sch. Atla.s PL 325, figs. 5-6. 1-ound only m the i)lankton haul from Station 13a-c. Chaetoceros constrictum (Iran. (Jran Xord. Plankt., p. SO, fi)?. 00; Sch. Atlas. PI. 3:{,S fig 1 Found at Stations fW) and 12(/, scarce in both. Chaetoceros criophilum Cast. Sch. Atlas, PI. . -512, tigs. 1-3: (iran Xor.l. Plankt., p. 71, f.R. 85, rather poor. ihis sharot, with (.. decipiciis CI. in being most abundant in the plankton material examine.!. Found especially abundant at Stations tjh, I'd, Viu-c 2ob-c and 40(/. Chaetoceros decipiens CI. f] s 57''\s'^°'^''' ^'''"'''^" ''■ '^*' ^'*''- ^^'' ^'■''- -'^tl''^*' ^''- 3-^ fig- -<) ''"'1 '''■ 343, The most abundant of all the species found; especially noted at Stations ^h, \M, Ua-c, 2r,b-c. Md, i2j; and 5(m. Chaetoceros Diadema (Ehr.) CI. (iran Xord. Plankt., p. 84. fig. 102; Van Heuick Svii., PI. 82 bis, fig. (J. Only the endocysts of this species were found, and in onlv one g.athering, Station oOa, a plankton haul. " Chaetoceros ■ iciniosum •^chutt. (iran Xord. Plankt., p. S2. fig. 99. Found at Stations I2d and 2.%-c, not abundant. Chaetoceros Mitra (Bail.) CI. (iran Xord. Plankt., p. 75, fig. 89. This is called Didadia (Irocnlandicus bv Clove in his Arct. Dial PI '? ^f,",- • ,,f o"iid sparingly at Statioiu- iSb and 12*/, and in the dredging froni j Chaetoceros pelagicum CI. : <;ran Xord. Plankt., |,. 84, lig. i.Ol; Sch. Alias PI. 343, hg. 1 i'.t>V""i only at Station 12d. It is thought by some to be a summer i)hase of [ C . lacimosum Schutt. 12 I fo'iii'l'iin Arctic Kx/ictlili,,,,. lf)l.J-IS Cocconels i:iir. (omoiul. Orun.) S.h. Cocconeis arcta A. Sell. Atlas, PI. 101, fiit. 1 station .|;{/,, s,,,m . i'" n.l.cr of tins K,.,ms. Fo.m.l in .Ire.lKinK from Cocconels kamchatklensls .Nfatu,, s,,. „ov II., (.«. 1: s,.,. also .S,.h. Atlas, I>|. 191, fi«s. |,), ,2-J;}, ..nnatno,! e<|uall.v wi.l- .•uouM.l tl > :, i,-// " f ' ' h I •'"'' 'f ''"'";''■'•'■ '""••"''•' '•■'^•'"■• PHn,,ioMi,a,.iH. liM. ,.viiM,t , ,1m ;,, ">'"*; ""■"" '"■•"'^ '" '■^"••' '•"«•; pro.ln..in^r',l„;H,v a wav -m ,.' n , " .>""•<■ 00s,. ly an.l inr^ulMtlv s,., ,^^^_^^,f-K,h O-O-I.i nwn.. w..|,h 0..,20 „.,.,., 10 li„,.s i„ O-Ol , i,. ,„,,„„,, without l«H.r,.lari-1"1. is a lio.|j;.-,,o,lur,. Always s,lo;vl'a^i,;s;^;.::J;:i;:£;"*';;\:;'-7:: ;:i;,;-' wi... ,.t..^. a,.,. , ;^ roso.iil.l..sC. ontmt CI. i„ W,,;, Dj,, I, ".':'■■ '^''•'''''^ .O"" sp<;<-i('s soiiicwlsat S'"'" """""■ ■ »- N." i 'in-;;,';j,.';;;.,:,;;; - 5i;;;i^,j's'':S Cocconeis paniformis I5i S.'l). Atlas, I'l. ISO, fijTs. it;.2i Cocconeis Scutellum lihi. More Jlf Coscinodiscus ICIir, Coscinodiscus Asteromphalus Ihr N||. Atlas, PI. (i;j, fij, ,2; Van if,,,,,,], Sv.,., ]'l. i;jo %. j.o . ,; Coscinodiscus concinnus \\ Sni Si'li. Alia.-, J>1. 114, figs. S-'J. ..rum r^irtw:^;.::^^ -'•>■ ""'"^^ «- «vpo charaotoristi,. of " i '; "l^ ^l^Tl "'^ '1 '°"' ^ '\ "'""^ '•''•^•"•"forenc-,. apart, ticularlyfromStat^o;;^ot^O«;'4:£Si;3r"" '" ^*"" ^'""^*^" '^^"'^' ^^ I Miiritw l)i(ili)nif' 13 *• Coscinodiscus curvatulus ( li lU]. S.h. AiIms, I'l. ,-,:. fiu. ;{(,. (;niii. Dial. r. .1.,-. I.,umI I'I | fii,. <( n ii Coscinodiscus decrescens ( .nm. v.n. repleta (iiim. 'Jiiiii. Di.it. I'. .)(,s. i.aMil, l>i. ;{ fin IS a K<)(K| \iiii('t_\. I'oiiiirl in i|ic-.|(riMK-! at Sta'iiiii i'.{. Coscinodiscus excentricus lihr S.l, Atlas I'l. .-.,s, li^.. |.;.|,), ,|„. 1,,,, ,,„. I „ f,,,,,, Coscinodiscus heteroporus i:hi vh- (>) Sell. Atla>. I'l. t;i, tin. I. ' " ' A siHMJcs .,f (I.Mihtli.l u<,r||,. J.'.Min.l i,i a pl.arikt..,. liaiil .at St.iti. 1, 1.!/. Coscinodiscus kryophilus ( ;i iin. (!. y.\\ (],, ;{ \.;,,.^a and the oth.T exactly like r-. ///»Y/^/.v. nnii.ii ., i,;,ui(s Coscinodiscus marginatus Khr Sell. Atlas, I'l. 02, fijrs. Ml. ui, i!'''7'ii''''' f- .'■"'"'•^■'"•^ >i<'ii<'';'l!.v uiiitcl with this spci.s. proves (o l„. a ^^hoIly d.fferen ,i,aton., an Kn.lict„a. Foun.l in dred«in/r at Sia io., •';5 and in a I)lanktoii li.aul. Station 4:?/. lan .n _,j, .mu in Coscinodiscus nitidus (iieg. Sell. Atlas, I'l. ,-,,S, fijrs. 17.]0. One broken speeimrn at Station 23. Coscinodiscus nobilis fJrun. Jour Koy. Mie. Soe 1879, PI. 21, fin. 1; .Ian. C.az. E.xp., PI. G, fin. 1,3 Ihe hguie by Jani.sch above is the only jiood one of this hiiKe and ddie-Uelv narked diatom. Found at Stati.ni 2l)/.-r,- .so far a.s I know not fou u p e'- ;us v '-nh of Lngland. The loeality of the dazdlc specimen is not given ''"'""'•' Coscinodiscus Oculus-Iridis Ehr Seh. Atlas, PI. GO, fig. 13. The speoimen.s were eln.o to T. padjicns Ratt., but as Grunow .suuKests X.nk. A\ien. Akad. 1884, p. 77) thi.s .should be classified C. OciiL-IndsXv P'JcJims. Found at Stations 23 and 29g. vyc<««* xuutt,, ^ar. 14 » ('iiiiiiiliii)i Aiflir h'.j-iHililiiin, l!)l.i-IS CoHcinndiHCUs Payerl (Imn. fiiiin. Di.it. r. .Ins. I,.iti.l, PI. .{, fijiH. 12-U. Fniitiil only at Slat ion :.'.■(. ilicrc r.itlicr fr('((iii'>il. CoscinodiscuH polycanthus (.nin. var. baltica (inui. (!ni?i. Dial. !•'. .Ins. L.iri.j. I'l. ;t, (i|{. 17. Found only at .*«lation L'(l'<-('. CoscincMliscus radiatuH i:iii. (iriin. Diat. V. .los. I.aiKJ. IM. .!. lijf I. 'J'lir .spt-cifiH'iis were ihc vaii.iy wliicji (Iriinow .•.ills nhiridlis on the aliovp plate and var. bnmilifi on p. 72. Found at ,>^talions 2;J and W,. Coscinodiscus radlosus Crun. .Ian. (• /., i;vp., i'l. ■., liir. !(: .<\, Found al ."l of this l»in(i a vaiiriv of C. Inni.-trls Crun., wliicli latlor IS proli.al.ly a Cuvlotrlhi. .\l.undanl in inanv of llic drtMluinus imrliculailv at Slalioiis 20/w, 2;i n, 4lr, };W, .»;U>aiid »;tc. ' <- »- ' I J Coscinodiscus subglohosus (1. and Ciun. (Jnin. Dial. F. Jos. Land. PI. J, ^i^r,. |().20; Sdi. Atlas, PI. .W, fw. 44 unnamed. . « , This is a sliiclly Arctic species. Found in dredjrinft at Station |;{/;. Coscinodiscus subtilis Ehr. Sell. Atlas, PI. .-,7, fiKs. 11-10. A si)ecies of universal distribution and jfreat vnrialiilitv. Found al Station.s 2.3. 27.S-, V.ia and 4.{//. Coscinodiscus tuberculatus (irev. Sell. Atlas. I'l. r,7, tins. 40-12; (Iriin. Dial. F. .Jos. Land, PI. li. fijr. 29. (Irunou exprcs.ses douhl of his specimen from Fnmz .losef land liciiij; this species liecaiise it h.ad hitherto heen found only in a fossil slate. The di.s- coveiy of it here c iifirms (Ininow's idenlifieaiion. " I'ouiid at Stiition 20(/. Coscinodiscus tuuiformis Temp, and Urun. Temp, and Hraii. Dial. .Lap., I'l, 7, fi(r. o. I siispeci his to lie nothint; hut a small, rolaist specimen of T. iiwniinaUis Ehr. with a very wide niitlh . 1 li.ive found it frcfpien'ly in cold iiiariiie'waters as well as here. Found in .i plankton haul. Station 43/. Cymbella Aj,'. Cymhella arctica Laner. Sell. Atlas, I'l. 10, fi^r. 12. The type specimen ivas found at SpiNl.ergen; those found here agree noifeclly with the type. Station 27,'.-. iymhella gastroides Kutz. Sell. Alla.s, I'l. (), figs. 1-2; (irun. Diat. F. Jos, Land, PI. 1, fig. 7. iliis spocies oc'curs recent and fossil, fresli-water and marine. F'ouiid in a dredging at Sti^'-u 23. Denticula (Kiitz.) Grun. Denticula elegans Kijtz. \'aii Jleurck Syn., PI. 49, figs. 14-10. Xornially fresh-water, thi.s species aUn occurs in brackish nv.<\ niarine gatherings. Found in chains of eight or more frustuies in a plankton ha-' from fetation 43/. Mm I IK hiiiliiiii.t L vtitlcula tenuU Knr/.. \.iii Iliiink Svii., I»| |i», (,„,. 2;{. ^-;to. lor iUU> .. ,....l.,.l.|y K,.,. ,1...... :,. .|..„i,„. «M- I .lolu, ln.,„ ..ij:u-.., , -h „ .; (uv;i«. Ii.iiii.l also i.t Siiiiioi! (;t/. •" 'iw.inr Diatntna ; |)( i n.il.. Diatoma tenuc i.\k.) Kiit/, \Mti llciiick Svii., |'|. .'>(». fiu-. | |, |<). I'Diuiil only ill plaiiklMM IimiiI fium Si.uion l'|,/-/'. Eunntia Kin. Eunotia praerupra Khi. v;,i. latlceps (inin. CI. ami Cniii. .\i(l. Dial,, I'l. 7. liu !•>;! Fragiluria J.vntjl.. Fraiiilaria islandica ( ; riuKiiuriu isiunuica (iniii. (iian \..i.l I'lanki., p. Ill, (iy. I.VJ; Van Ilrunk Svn., IM. i:. (it: HT iM.iiM.I , plankloi, hauls tV.Mii .Siali.,ns VM,-,; ISn aiul U;h; i,, i|„. lir-t very Mt.iiii.iaiil, coinpoMMir .-ilino.wi thr ciitiic plankton. II i> Clyphodestnis i'.rv Clyphodesmis interspiralis Hum. (.') I'l. I, fin. .■). S.'.. 1... Dial., I, I'l. 21, fi^. Ill n.V .•..llipaiiMK Ihc fiirUIT hen. Kivcn will, tlir „nr ih/.< IJ.„I,,„,.~I. llaalm,,.! •'-■'■'i.al a:.p,.a.anc.- olil,,. ,«., will 1... s.vn; I,,., as il,i, s, ics has novcr I • r, l"-n ..m„| ..xn.pt in fossil l„.,|s a. Canna.ks aiul Tot., ra. New Z-a .',, I, ■ '•jmnot l„. ......sfon tl,.,,- .,l..ntity. ( )f ,.,„„... ih,.,-., aiv n,ai,v fo..il o s to, n I also „ .. l.yinK staf, ,.„.. A „./,„/„ S,lndtz,l. \m th,. s.paration of ih-s.. V, «-oH.apl.ira,ly, as utII as .■hro„olo«i,.ally, is ..xivptional A .•.rlaii, sp,.,.,.,' p.n.hlan..,. ...xists l.,;Uv,.,.|. this ,|iato„, ami fi«„i,'s of tho so-.., I •'//,„,,. '{% t T! h\^ "'"' '';■!'• ''/•• '''• '• "«■ -»• •■""' ^^ ^'■'- '^'"- '"■'"•■ I i Sm Tvl.; V i; v" '|.-^"f •'","■ ." 'li.it.. .|,.li,.a„. .liato.n, w.-ll >howi, in Gomphonema An. Gomphonema exiguum Kiitz. Van Ilcuick Syii., J*l. 2.">, tins. ;i|-:}n. Found in plankton hauls from Station Hi/. < Gomphonema groenlandicum Ostr. Sfh. Atlas, PI. 2i;{. fifr. 40. Found in two dredgings, fioni Station.s 2.j and lie. Goniothecium Kin. onJolhedum Odontella Klu . Fhr. Mikro., PI. 18, fig. !)4: Piit. Infu.s., PI. (i. fii; 27 Generally fossil; found at Station 27*'. lAr finimli'iii Ariiir I'.jjirililiini. HtlJ'IS (;rutnnittt»phnra Mln. (;rumniat«»phor;i urciltu < I. Nan lli'-iick S\ri., I'l. .VI lii.«., fi(j, ;(. 'I'lii" ix llic >aliii' a* .r. I'.'l, litf. II. Mdiv ur Ic-- |>liiililii| ill iiKiiis III' ihi' (Ircduiiius, t'M|wci,illy ill tlid-f In.m Staliiiif 1-1" aiiil l.i;/. Grummatophora islanilica lilir. \ .111 II. nil k S\ h.. I'l. 'i'.\. till. 7. I'ldlialilv a s,iii<'l\ III '/. iiihi'ilnsii |;|i|-. |''iii|inl ;il Slaliiiii« Lie aini I,!//. Gf.niniatr hora marina Kuu. \;iM llnirck ."^vii.. I'l. .Vt. lius. !)-i;{. riiiiiicl in tlir ijictijjinn at Station LMh/ ami iIk' plankton haul at Siaiion !•_»,/. Grammatophora oceanica F.lir. var. tnacilenta W. Sm. I'ciaK. Di.ii. I'lanci', I'l. S7, fi^. Iti. , III' niaikiinjs oil tlii.i spccii's arc cxi'cplionaiiy liiii'. I'miiiii only in tlic (jrodifinu Iroiii ."station 'IIk. Graminatophora subundulata (iriin. \ an liciiifk Syn., I'l. .').'{ I.i.i., fit;. |(». I'la I liv Minii' aiilliors as a variety of'/, iiiiiiinii. roiinil only in ilir ijcil' - inp from Station |:{/'. Ilantzschia (irun. Ilantzschia amphioxys dlhr.! (Inin. ^'.tii III link Syn., I'l. .Vi, lijjs. 1-ti. I III' Kioiiiiils for M'paratinn this from the (tciiiis .V//:.v(7i/((. namely its havinn tho li('a\\ c.irinal maikiniis on tin' sanio siih' instcini of on opposite -ides of the two \ lives of the iii(li\ idiial (lialoin, is insiiiFieieiit, Imt it makes for easier identification and ma\' therefore lie accept. mI. U he present species is generally fre^h-waiii hut -1 eiii- to thrive in marine localities. J'oiind onl\- a' .'>talioii II. Ilyalodiscus Khr. llyalodlscus horinoitles (Mont.) Petit. \aii Ileiirck Syn., J'l. St, tips. ;5-J : Cniii. Diat. V. .los. Land, PI. .'i, (!«. :12. (Ininow wiihoiit apparent jnstitication names his figure var. iilnciiilis; this (Iran turns '\uto Lmuli riii (iliirinlis ((iran Xord. Plankt., p. '2'.i. iifi. '2'.i\. and Jornonsen i.Iorir. I'rotist Plankt., PI. (i, t\\i. 7) calls it I'luinsirn ijUwialis. A\ithoiit .sceinji (Iran's speci..ir'ns one cannot find a uood excuse for niakinn this a Lawliriii. Do Toni (Syl. Ain., p. llUil) .says it is what is named Hiidlodi.scus vkisIiiiuk var. ardica in CI. and (Iriin. Types No. 1. pound rather ahuiuhintly at Stiitions 206-f, 2.'^, 4'Ah and ■t.'ir.- also what may l>c a small variety correspondinij to the figure in Sch. Diat. Nordsee, PI. 3, fig. 10, tlc-e confused with "I'mlonira hormoulrx W. Sm.'' which is H. scDticus (Kiitz.) Grun. Coinparo witli Van Heurck Syn., PI. .s4, figs. 7-8; this small variety occuring at Stations 41 and 43n. Hyalodiscus laevis IChr. Ehr. Mikro., PI. 33, .sec. 15, fig. 17. Typical specimens were found ai Station 43c. Mnniii hiiiliiinf »7» llyaloillNCui HcoticuN I Kill/. I (Imn. \,ih II, link Syii , I'l. .HI. Imv |,-,.|,S: Srh. Dial. .\,.,,|„v I'l ;i till '7 nii-ii:iliii'i|, K' "•' I'oMrid lit Staliui,, M,^, -Jit,,, II. |;(/, .,,,,1 ,;,,. .,|,i,i„|,.,„t. llyaltHllMcuH nuhtlllH Hail. HhI \rw .<|M.. . |>i. I, (iK. IJ: I'm. Ii,r.. I'l. .-., (i«. .,(1, K„.„| (imir... I ■■ilii.l ;il .>«lalluli-. \Jh ,11,. I l.Ul, .■.(■arrr in l.olli. i l.lcmophora .\u. I.icniophora l.ynitbyel Kui/.i <;iiin. \ all III nil k S\ h,. I'l. 17. (in. i:». 'riii' spnimi'tis will, all 111. iiiiiii,|„„i.-,Mt vaii.'lv .•.■ill,.,| var. l',n,,„,ii,n '■",'"•'" '!" •''"'^■' "•('■"■.•MIT. .Mil t:l, t|„. luM-kiMir^aii- I-...US.. Il.iv aiv .shallow ami th.Tili.ii. (iliMiirc, rnii.i.l in pl.itikii.n haul n, nlc al .' Kuiz.i (Iriin, \,1M III link .Xyii.. I'l. I.S, IJK. 21: W. >Hi. Hill. Dial.. |'|, J I (Ju. JJU „„\. M.'lllll'll. I'l'iiml ill jiLiiikliiii li.'iiil iii.iilc at .'iiloia (;revilltfi \V . .•^m. \;in lliiiick Syn., I'l. I, lij;. 2il (luinp.iii' (i^. i,si. I/, (.niillri is a If.'sli-waliT .simtI...^; this ami ihr similaiilv or i.iriilily «liirli soiii,. lur-iis shnvv wiili .1/, />„„.«,„ Tl.w., a i.r.i.ki-li ami inarim- s|«.cir- HittKi'.sis tUv s|,i.rin„n.« Idiiml may IxIouk to tl„. latt.T. In a iiianktnn Imiii' tiiiiii Million 'l\il-J. MeloNira Ajt. Melosira iiranulata (i:iii. i Halls. Sih. .\ilas. I'l. |,s|, (its. .-.7-ti.'.. Hatlii'i- 'ilinlilii! at Station •"' ■ .Mt'loslra lieribaudil Hmn. Sfli. All.is. I'l. IS2, li^r. •y\. ^'(■ly aliiinda.il in ilrrdKin;; from .Station \M,. Mi'losira hypcrborea (Inin. Va.i Ili'iink .Syn.. PI. S.',, (i^s. .\-[- (Iran Xoi.l I'lankt.. p. l;j. fin. |. Foiin.l ill tliii'c plankton hauls, from St'*i()n.> 12//-(. I'Do ;im| 10./, Mt'losira .lur^ienKii .\(f. .•-I h. .\lla>. ri. !.._', lin.s. |(i, 27-;{i. i'oumi ;it Si.iiions 'M>-v, \\, \:\a ami I.J, . Milosira niimmuloides 'Hor\ > .Kn. Sih. .\tl.i-. I'l. IV.'. fi^s. l-'2: Van ll.unk Svn.. I'l. n,"., fin. |, lotiiiii in om ijiv.liiiiin. from Si.ition IIV, .ami ii. three plankton h.iiils - ions 20./, \{)il and l(W<. Mi'losira sulcata iKhr. ) Kiit/. \.iii HcMrck S\ !!.. 1'!. !>!. }i"- J." js '2'>-'>} I'laii'd l,y many authors in a M'paratc neniis, I'nmlta. Foun.l al Station.s -'ti'-<-, 20j/, 2:5 ami l:!«. 18 F Cavwiioii Antic Expedition, 1913-18 Melosira W'estii W. Sm. Villi Hciiivk Syii., P'. 01, fnis. ll-li>. FoiukI 'itily ;it Station \M>. ilicrc rallicr plentifu! Navicula Hory Navicula abbreviata (Inin. <'l. and (Irun. Aict. Dial., I'l. 1, 11^. |;5. I'nund onix- al Sialidii \'Ai . .-caicc. Navicula algida ( Irun. Dial. I". .)(.s. I.:ni(|, |>|. I, Wfi. M. Found in divdjiJMKs li(,ni Sialion.-^ _':i and V.ia, and in a plankton liaul from Mat ion 29,(/. Navicula aspcra I]in . ('.run. Dial. V. .lo,-^. I,and. I'i. 1, fis. L'O. 'i'his i> liy tat- tlic most alunidaiil species found, .Minic of tl lanv varietal I>i)ases I.einj; pre.-ient in nearly every nallierin(r, often in Rreat (lualitity The most pronniK-nt form is the Lirse variety called .V. «.s/«/a var. intermnlin (Irnn. and fifiincd in the ;il>ovc reference. Especially coimnon at Stations !,';{ anlciihla. To illustrate the muddled group that Cleve tinites under .V. nuurllatii, compare A'. Inuiaita Donk in Mic. ,lourn., IMil, I'l. I. fly;, ia-h and A', rcdisit I),,nk. in tif;. 17((-;; same plate. When such di.ssnail;ir species are called by the same nanu' diatom taxonomv loses all value. Fmin;! at Station 2o. Navicula bontooides A. Sdi. Sch. Atlas, PI. \:>,, fijr. 2«». I'oiind at Stations 2()/)-c and I'.iti. Navicula Bombus Mhr. Sch. Atlas, PI. i;{, fiKs. .->, (i, !t. Found iinly at Station V.in and rather scarce. Navicula brevis (Ireji. Sch. Diat. Xordsee, PI. 2, ligs. It, 1."). Found at Stations 2(t/(-f, 2:5, 11, 41c and tH;/. Navicula c^inceliata IXiuk. var. minuta 'Irun. CI. and ('.run. Arct. Diat.. PI. 2, fig. 42. This is hardly a good \ariety of A', canccllnla. Found at Station 2li6-c. 1 A. I Mdiiiii IHiitniKs 17 F Ilyalodiscus scoticus fKiUz.) Ciim. /.■■n H.mck Sy.i., I'l. SI, fiKs. l.VIS; Scl,. Dial. \„nl.-...,., 1>|. 3 tic 27 Found a( S(ati<,.,s •.'()/,-(•, 2{),j, 11, i;j/> and j;{r, alMindanl. Ilyalodiscus suhtilis Hail. Mail. .Xrw S,,r..., 1>|. |, fi^. |2: IVit. Inf., I'l. .-i, fi«. (io, j,„„d %,.,■,.. Iniiiid at .station.s -126 aiiiIi. Licmophora A^. Licmophora Lyngbyei iKuiz ) Cnm. \an Ilriirck Syn., V\. -17. fip. I."). The specimens were all the iininiporlaiit variety called var. I'nuprana <.riin. in the ai.ov.. refcTence .Alt h.,n};li the niarkinj^s are coarse ihev are .shallow •MKl llierelore ol.sciirc. ImmiikI in plankton haul made at Station VM. f.icmophora tenuis (Kiitz.j (Iriin. \an Il.urck Syn., I>l. IS. fif.. 21: W. Sm. Hrii. Dial., I'l 2» fiu •>•") mis- naujed. ' '^ ~~' • Found in pl.inklon haul niade at Station 7>[)li. Mastogloia Thwaites. Mastogloia Braunii (irun. \'an Heurck Syn., I'l. \. flj-s. 21-24. Found only at Station 2l)6-f and there scarce. .Mastogloia Grevillei W. Sm. X'an Ileuri'k Syn.. I'l. 1, fij;. 20 ('compare fij;. IS). .1/. (InrtUvi is .a fresh-walcr sp!, fiijs !.">-iS, 22-'_'4. '''" ' ''.\" niany authors in a separate fjenus, I'nrnJia. Found at Stations -'ii-c, 2()y, 23 and 43a. Mil -2 CanwIioxArdicKxpcdilion, 1913-18 18 F Melosiru VVestii W. S.n Navicula Hory Navicula abbreviata r.nm ^ CI .(,1.1 t.iuii. Anl. I'l:''-' 1 '• -' "'-• F,,mid"nly at Slat ion Kir, ^'.■ar.-. Mavicula alftida (li'i'i. S;;{t,i£Si:.:'<;s;--^ .-. >"--^ • '™" Statiim 'J*.'!/- ^''^V^^'^.'S:".''-. '.-'; '\'„f^,;;i. .,..„.. son. ..f the .nany va-ietal 1 . ,.■ h.-inu i)ics(Mit m nearly e\ei\ (laimm,^,, yar. "''■'•""'''"' *''""■ umUlnunMrMtlieal.<.\eultHn((. i Navicula Baculus C'l. ,. ., ,, i „nlv at Station 2'diJ. Navicula Baileyana (inm. N„nlsee, IM. 1, «s:.- :il- S;: ^':nl,';;.'s;;;ri;;.i.ii*- ^» >' » ^ ,y . .>. ^-'fr'r «!?r"!» s^i"™i,2: .n. fif. ;;t.,^ „„, ,„ „„,„„„ „„, ,.,„,„, V J ;. h«.„r. II'""' '""•■'"■ ''"^'■''''''''' V ' m " fii-^l i~''li''l "'"' ""■'"«'.'■ „,„,„V , ,1." ".i'l'"'- "■•■""'■ ''r™:,'; '[,"; lu- "- v<''v '»";'>■ "■"» '""'"'• I3ii;',i:^ i-ui;: .r, .r^i;-- «?-,;;ls:;, iSij''::^: m-oui) that Cleve unites mulei .\ . ""!"'.'„ ,-,,,,1,. i„ f,^. 17./-/^ same plate. I >-h mkva.minuta( . run. ""^^ CI. an.l «;.un. Aret. >':^':;, ^•,;^' '^.Wfu/a. Found a. Station 20(,-c. This is hardly a ^uod \aiut\ 01 ■> ■ Marine Diatoms 19 F Navicula Claviculus Oi-ok. (Ireg. Diat. Clyde, PI. 9, fig. .-,; Sch. .\tlas PI. 2, fi«. 2S. ~; Found In drcdRing at Station 41, and plankton haul, Station lid. Navicula Cluthensis Cirog. V\. and Cnm. .\rct. Diat., PI. 2, fig. 19; CI. X. and R. Diat., PI. 2. fin n Two vanotios rcpn'scntc(,l hy llio al.ovc iviVn-nccs; var. finmnrchlana (■run. tound at Matu)n U, and var. inncullfem 01.. at Slut ion 4.ic. Navicula compressicauda .\. Sch. Sdi. Athi.^ PI. 40, fiR. (i2; Sch. Xordsw Diat., PI. 2, fijr. 35. Fouiul at Station 43«. A very rare species. Navicula consimilis A. Sch. , Sch. Xordsec Diat., PI. 2, fijj. 4(). I Strictly typical forms ai Station 41c. Navicula controversa Mann, noin. nov. PI. I, fid. 7. Valvo paiiduriform but only slightly constricted il the middle, thus closely A resemhhng in outline A', didi/ma; rows of heading railiaiiv arranged throughout ; hecoming arc'intc toward the two ajiiccs; the heads in each row wic'ely separated an(l appeani to he strung on thread-like lines, two to four heads in each row and all near to the outer margin, thereby leaving onlv the thread-like lines to 'ontinue to the niKhlle; rliaphe strong, straight, bisecting the wide fusiform ledian area; central nodule rectangular. i Length 0-079-0-110 mm., width 002S-0 0t0; 4-7 to hues in 0-01 mm, Ihis IS identical with the figure in CI. and Grun. Arct, Diat., PI. .3, fig 54 there miscalled X. bomhoides var. media (see Sch. Atlas, PI. \:i, figs. 'M\-.W) and subsefiuently figured in Grun. Diat. F. Jos. Land, PI. 1, figs. :jS-39, there mis- I called A. subcincta A. Sch. (.see Sch. Atlas, PI. Vi, fig. 41 and PI. 09, fig. 32) I It IS abundant in some arctic dredgiiigs, especiallv at Station 4:id. I have foiaui It also in material of the Shackleton South Polar Expedition, and identical with ; the northern specimens except that it averages larger. I Navicula cruciata CI. I CI. X. and R. Diat., PI. 1, fig. 11. I Cleve's type form came from Greenland. Navicula didyma Ehr. Sch. Atlas, PI. 13, fig. 2; Sch. Xordsee Diat., PI Xot at all plentiful; found at Station 43f. Navicula directa W. Sm. I Sch. Atlas, PI. 47, figs. 3-.-): W. Sm. Brit. Diat. Found in dredgings from stations 20b-c, 23, Found at Station '."ih. l,fi«. 7. P J)'. Mikton haul at Station 18r/, and generally abuntiaiit .IS, fig. 172. , 43'/ and 4.3/^, in all. and in Navicula distans (\V. Sm.) Ralfs. \V. Sm. Brit. Diat., PI. 18, fig. 109. >rhiiii<-h. Atlas, PI. 7, figs. 29-32. I I ins normally fresh-water species has been reported several times in lirack- mh ihvilgings. A', subornlifi CI. in X.'iv, Diat., T, 1'!. 1, fig. 27, i- a verv riiiiiiar t #'1111 of truly marine habitat, but having been found onlv in New Zealand this •iiiir species is probably the above. Found at Station 20(/. vsKamv . 'nw ra,m,llnn.\ntu-r,,,nl,tio„.im.i-IS 20 F ,„,'-i:;L'«'"t:"v:;;^;;';;;'s;:;J,rio^ -- Navicula erosa (1. K:;„^':;;t';:.S:;;^5« i- ■ • ■^»";:r 't°n "^'■»- i;|,J- «-; ■ V ... X, : A. --■ (M.'vrVnu.kin>ith,> l^.u M , ,i.,„ thai al an; MuaU si'iUStr^'" '»•"- -^^^^^^^ """ * 4:5« ami *'^(/- Navicula exemta .V S.!.^ ^^^^^ ^^^^^ ^^,,_ ^,,,,,^,.,. ,,i,,, p, ,, «,. .. Sell- Atla>. n. I '• IJ-- iM.ini.l at Statu.!-, -l.ly. g Navicula forcipata( 1.0V ^^,^^^ j,, ;„, lis.. 17. j F.mn.l al Station 11. % Navicula fusca ('>n)i. a ^1 u1>< in 7 f'ltis. 1. 7, i>- ,; ; ...f.clic.l tlw iiiiiiii\i<>rtaiit | fSiis^isaS'-'^' ■ ^'' , Navicula ftUicialis * '■ .|U,> liir. ^Ui. ii" i'^'""'- ,. d ,ii.r {Ti •i*, ^,„.,.i,n..>. ...n. '-'^-. :;;•;, ^';i:'o:,.5 1 x 0.0..57 ....... iu,t,.a ... plUfmhaulatS^atMH,!.'/.-'-. Navicula humerosa H.vti. F.Ll.,:pUu.kto,.l.a,.lat>ta..o.. IS./. the above. ' lm...(l at Stalio.. 27.. lans ,r.\*i'j Mdiliit' I)iiitiiinn 21 V ■I Navicula itnpressa I.iiscr. Sell. All.i^. I'l. I(i, litis, .-n-.il. Pill l.y Clrvc- into .V. amnlhih, Dunk. w|„.|r, like m 1o( ui .uhn fmnis -,, iiicliKlcd. It (Iocs no! hcloii^r, Koiiiid at Station liic. Navicula inconspicua ( Ii(>r. CI. Xuv. Dial.. I, I'l. .-,, fiy;. 2S. Foimd at Station '2:i. scarrc. Navicula incudiformis '1., sec N. transitans vat. Navicula insignificans Mann. sp. ii.,v I'l. I. fim. s. \'alvc iiari-ow-laiin'olatc luit with l.liint ciids; ni;iikiiifis sirikiimlv M'lntv consisting ol tliin. widely spaced costal lines, ohsciirelv .•ross-j,;,,,-,.,! on one sid.'. ot lie valve and rows (,r lie.'ids. two heads lonji, on (lie ,,lher M,|e of the vil'-e rieitlici- ivacliiiiK to the rliaplie; this slinhily toi-|iioiis. its oiiie, end> sli-ondv hooked: central nodule soniewh.'it lo one side of the niiddli' Length l)-(Mil iiini. width OOlUt mni., .V7 iinl.eaded cost,.,,, and ii lu-ided rows Ml OOl mill. This slllHciently reseliil.les .V. snilif.r Mruil. in Brim li-pec, \ouv p :{S 1 I. 1.), lit;. I. to siitruest Its LeiiiK a varii^ty: hiil the siinilaiit v is not close This IS a smaller diatom (Brim's h.avinn a lenmh of UUsr, to ()• i(M) mm i ,ind that species is recorded only from the fossil deposit at Semhii. .lapan. However .\. ciiiiiiirissiniiiilii ocairs in liolh the North Sea ;in.| at Sendii. .Iipan The" ahovc also resemliles .V. ///(7,-/;ni .Mann in Dial. I'hilippine M I'l -'^ Iji.- ■; Found at Station 41. •■—...,.•. Navicula interrupta Kiiiz. (no* \V. Sm.! I'l. I, fifi. U. Sell. Nordsee Di.ii.. l'|. ]. {\^, y,- Sch. .\llas, I'l ti!) (i-r •>.", liiisnamed. "' " ' The form here fimnred and ajireeiim clo.sclv with the references tiiven aliove MKiy he a wid(. variety of KiUzinti's species, at least as it is hroadiv represente.l I hat no one would call it '■inlernipied- is evident. ;uid in other p.,inls it docs not ri'scnihle much Kiitziiifi's type tinnre in Kiilz. Baeill., I'l. i".». fi- m Their identity cannot he decided without seeiny; Kiilzinn's tvpe specimTMi, for manv ol 111- hfiiires are greatly idealizid. I accepi the name, however, suhiecl to the liTctiiMiiK statement. l'"ounil al St.ations I'u/,-,- and tlic. Navicula Kepes.i Cirun. <;riin. I)i,i(. F. ,|os. Land, I'l. 1, fiij. :;7; (1. X,-.v. Dial.. II. p. 27. It IS hardly jxissihle to hold thjs >,.p:iiale from .V. ili,,i-l,t \\ Sm I'ouiid -it Slat ions 2(»/>-r, i;V< and |:{,-. ' Navicula lacrinians .\. ;-cli. Sch. Alias, I'l. 12. fit;-. HI. I s. |-2. I'rohiihly merely .a fresh-water iiileipolalion: Sialion 2:i. Navicula Liber W . Sm. Sch. .\tla-. I'l. ,■)(). n-s. l(i-|S. AhhoiiKh this fine species is variahle, ( 'Icve has i„.arlv oMiiei.ated il- ""■niinti hy umliiiK with it ,-i host of-litihllv rel.aled f.irnis in CI. \.,v Dia- I !'■ '1. Foiiml at Sialion 2ll/;-r. ' Navicula longa (Cretr.) ll.ilfs. >ch. .\tlas, I'l. 17, fill. J2. no nam.-: and f'-.. ■-. <). ilns variety •■ neediessly named .V. vni»:i.. ~ \>v I'eraii.dlo in .\iilarc. Diat ^■'■■"'•'•- |i- oO. 1 at Sta;i(Ui 4:5-/. msj.^rw . ,A3.«»v. " ..'^ ""^: Canadian Arctic Expedition, 1 913-1 S 22 F Navicula Lyra Ehr. viir. (?) above nuM,tion.Ml. Fouiul at Stations 23, 27., 41 an.l Un. Navicula maculata «uil. , t,i ou r,c > Sch. Alliis. ri. t), fis- 'i^, inisniiincd, and 11. /H, liR. - I'oimd :it Station 2:}. Navicula maxima (irct?. . lo jt .;„.«. i>i„.. <-K*. I'l. »-,«'j„i'',:„;::'';..f! ?;: ?,;,;;S;r< ™; .i,..«„ .i,ov. occm'iI;. *,."■;■. sn;ri.r'.i'»,i';'s, ;/:;;. >;c ..»- - «> -» -' <*■ Navicula oscitans A. Sili., var. (?) Found at Station 41. Navicula placentula Khr. )C,Ki Svln, in L^-^^ior. Found in a plankton haul. Station 18d. Found, one speeinion, at Station 2.i. Navicula protracta dun. t"l. and Cirun. Arct. Diat PI. 2, tiS- -i"; ^ j^,,. „f .y. rn/cfru/a 14. Found at Station 23s. Navicula quadratarea A. Sell. fil)^ The hyahne central area is too large m Nan Ileurck's lifjure. Navicula ^stellaU C;... (not Kuu. ^^^^^^^^ ^ ^. ^^ _ ^^ ^^ ^Sl^t'snuion'2i;:\ea; A", '^inf'^;;^^^^'^^]:^/^^^' ''^ °^ Toni, Syl. Alg., p. bO, and by Llrunow in hch. Atlas, PI. 40, note. VM ■' IV. Man'tu Diatoms 23 r Navicula Schultzii K.iiii. Sell. Atlas, I'l. IMI. Hk. :>. Tlic type was found losrs(>y. 1 l(,un <.f this diatom sn,.Kests the ueniis MasUmlnux. I'Oiind at >tation '.M. It is rather elo^c f. vaiietie^ of \. ,jt„ri,ih'.-< CI. Navicula sibirica (Irnn. PI. I fitr. 10. (1. Nav. Dial.. H, p. 20: CI. Ve«a Dial., I'l. :{7. tj.- :is In the liKure here niven. a variety of this sprci..s. the apparent I, .rd'er is due to the vertical curve of the sides. Found at Station 2.i. Navicula Smithii Hreh. Sch. Atlas, PI. 7, fins. 10, |0; (irun. Diat. F. ,Jos. Lan.I, PI. 1, (is;. 10. Several forms of this prolitic and variable diatom were found; the tvpo form at Stations 2:5 and Wc, varieties at 20^-c, m and ilk: and what Crundw calls var. Iximihs m the second reference above at Station 23. Navicula splendida (iiesr. Sch. Athis, PI. i:?, fi(r. :{i; PI. 09, fiR. 22. This species is .piite abundant; Stations 2;{, l.Ja, »:{,/, and verv larnc anti brilliantly marked .specimens at Station -l.ic. Navicula subcincta A, Sch., ksO: (irunow; see N. controversa Mann nom IIOV. . ' Navicula suborbicularis (Jreg. Sch, Atlas, PI. S, fids. 1-0. Found at Stat urn i;5//. Navicula subsalina Donk, Donk. Hrit. Diat., PI. I. fijr. 2; Van Ileurck Svn., PI. 11 fi.r o I'oun.l at Station U, Hardly to be kept si'i'iarate from .V. umphMnrnn Jiorv. ' Navicula superba CI. CI. Vena Dial., PI. 30, fijrs, 2;{-24, Found at Stations 28, 41 and 41r, and the var. tlliplica (lit;. 21 above) in a j. ankton haul at .,c. uon 40(/; n)y specimen of tlu last had lenirth OOoS nun See CI, Nav. Diat., II, p, 29. Navicula transifans CI., var. incudiformis CI, CI. Vega Diat., p. 407, PI. ;]0, tifi. 20. Found at Stations 20;^-r, 23 and 436. Navicula trigonocephala CI. (nanu! pre-cmptod). CI. Vega Diat., PI. 30, fig. 27; Sch. Atlas, PI. 2.-)9, figs. 17-lS The name is pre-em|)ted by ^Fiir.) Ralf.s in Prit. Infus,, p. 900. Found at ^!;,tion 20f/, plankton haul. Navicula valida C!. and Grun. CI. and Clrun. Arct, Diat., PI. 2, fig, 29. Found at Station 43a. •»«»"♦" JIW t .!»* J" j^sns^^B 21 P liiiKuhiiii . I /■(■//.■ Hxiiii'ili'iii. lUl.i-IS Navlculu vftula A. Sdi. vit i 'i l-l I Cl- 11. CnniiMn' Sch. AtlM^. IM, CO. fuj. :W. m;i'I 1M. IJ. ';;;. i;». \lllioii"h lliis (Iciluin MU'lvi'-^ with tlif mI.'.vc hi urticr..! I"-ir, in 111.' loiiiiitiulinMl .livisi.iii uf 111,. mMikin^s :iii.l in itw i1i:i|.Im' arvii. it ai>|«';ii« l.i l.r> ;i roMiMT for.,,. It :,!-.. is ahoiit th- >Min- ^i/.' as ilir sniiilpr ..t t ,.• two liitnivs of S.-l.ini.ll Clrvc in N.-iv. Di.H.. 1. |>. n:.. ^iv.- I"r ll><' iMrncr fitniv al.ov tlu- f,,lln«;im- I.ML'llilt (».-. nun., wiillli l.nclli (t():;J mtn.. wi'llli yn.. IM. I.-', (ij:-. H", Is. FoiiihI only at Slalion '!■). Nitzschia hunftarica (irun. V.an 11. link Syn.. I'l. :)S. fi;:-. l'.t-2:?. i • i; , | ;„ Alilioii^li uMiallv fivsli-wai.T it itilial.ils l.ia.kt-li lo.'ahti.'s aii.l is listc.l m Clcvi'V .\i-.'i". Dial. 'I'.iunil ai Stati.m 27-s frcini'iil tii.'ii'. Nitzschia hvbrida (iiun. . ,. ,,, . .. ... Van ll.m.k .-yn.. IM. \an ll.iif.'k inliiiiat.'s, this in;iy Im' a vai-i.My of A. /.-/-•. /,:,.///.' (.mn. :;.■!■ tit;. VI -an,.' plat.'. Foiliid at Slalion 20/-.'. Nitzschia insijinis C LIT. _ .. ., Vat, ll.'tn.k Svn., IM. .11. fi^r. 1; I'.'.mi:. Dia . 1' >-'".'.> PI. <...fitr>. •^1-- l'-.„in.l lath.Tfi'.'.in.ntly in mat.'tial from Stations 2.5. II, U>i an.l l.i<. Nitzschia linearis (.Vi;. > W. Si,,. Sm, Hiit. Dial., IM. i;{, titi'. 110. I'oiin.l at Stations 2:5 at,. I 27-'. Nitzschia littorea (Inn,. \at, ll.iiti'k Svn.. IM. .".9. lisrs. 21, 2... • , »• „ ;■ It is .nir.stional.U- ,1 anvthin^ is -ain.-.l l,y tinititifi tins with S hnwaUs (Ki-itz.^ (inin., as is MijiC.'st.'.l aliov; .'..mpaf.'^ii;, 20 ot the sanii' plate. Nitzschia lonftissima (Biil>.) Kalfs. ^^atll'an'iSinu'n^^Aav'^^T small an.l .l.li.'at.., liko H. .5 al.ov<- CU've an.l r.iun.'.w t.'.'ov.l this .-fom the Aii'tic. Foun.l at Mations 20/>-c and Uc. Nitzschia marginulata ('.run. Van ll.'titck Svn.. IM. .")S, ti«s. 12-1.). Found at Stations 2U6-r, 4.5 b mid 43 i'. Nitzschia plana W. Sm. , ,. xi i u pi -s fi.r in \V. Sm I5nt. Diat., PI. 1.^ fig. 114; ^ aii H.Mirck Svn., PI. o8, fig. 10. Scarce anil not (piite typical; found at Station 23. M nil III hintnms .'.'. r Nitzschia polarls (liun. (iiiin. Dial. v. .!,,<. |„ui,|. I'l. I, (iu-. tiJ-ti:{, ^^^^ ^^r..un.l III a .livluiliu fnuM Stafiui, Jft,, an,| a pl.mklu,, I,.,,,! ti„„i «:,i,„. Nitz8chia seriata (1. ♦ iiMii Nunl. I'laiiki.. |). i:{(). tit;. 171. HalhiT iiiriv.|ii,.|i( in two [.lanlvlcn haul-. Slalioii- Vll-r ami \l.v. NitzscMa Sijima Kiiiz.) W. Sm. Van llciiirk Syii,, I'l. tifi, fins. |-<». -ill.. l.v|... i;.,nii ...•.•urs l.iit is uiM-.miinnii: inaii.v vaiirtirs wnv r.,uM,I. as var. 2/.£.'n!7:|/ n, *""■' ""' '•'"'• •"■"'"""•"" "i«- " ■•'•"'V«''. I-uu,„| al Siatioiis Nitzschia sdcialis ( Mr vai . Kariana < ;iiiii. <'!. ami ( Iniii. Aici. Dial.. I'l. t;. (it;, lus I'diliiii at Slat 11)11 i>.{. Nitzschia Wcissfloftii ( Inm. I'lrat;. Dial. France, I'l. 7ii. (iu-. ;;-l. < 'lily (iiic s|)(ciiii(.|i foiiiul, Sialidii II. F'lajiiograinnia (Ik v. Plaftioftramma (;rejiorianum (liw I'MMIC. Dial. IV.UHr. I'l. SL'. liK. 7; .Mir.u. Jullin., I S.V.I I'l III lit;. |..> NmM^■UlllH.l•s^llat,t;^tl,ist,,/^.v^^^■,v,/,.,<,,M(l^r'.iIl•il^,t..M■|lans,W(■•^^^ MM. (.ivir. D,at. Cl.v.l... p. I!)7. I'l. 10. fit;. ;{7 ami I).. T. Svl Vk „ 7is l-oiiml at Slalioiis JII/,-c aii.l L>7v, sr.iicc. ' ■'-''• • Pleurosiftma W . Sm. Pleurosigma anftulatum W. Sm. \\..-^m. ISiii. Dial., I'l. -Jl. lit;, o,,.-. |.,,,..,j, ].|,,„,,, ,,| - ,i^,^ ..,. .in..i«il;;r s;;;;':::;:^.?!:"'''"^ " '"■'" ' """""" ^ ""'^ '• '■'"'■ ^•••■'•'""■■' •" '""■ Pleurosigma balticuni (llhi. i \\ Sm Vy. Sm, Hrit. Dial., |'|. 22. fit;. •J()7: I'.rau-. I'lnin,.. I'l. 7 fi- '0 UuftK.r alHimlalil. ..sp,.,-i.a||y al St,ilioi,> 2(l/w. ■_':{ and 27... l.aiLrr an. I (vui.-il Pleurosigma Fasciola iKhr i \V. Sm vai. sulcata Crun < I. ami (inui. .\iii. Dial., I'l. 1. fju. 7.-,. ^^ This seems to 1,,. :, slriclly p,,];,,- variation of ili,. type. I'ound al Suvtion Pleurosi^ma formosuni \V. Sm. W Sm. Hrit. Dial., I'l. 20, fit;, k),-,; IVran. Pli'iiro., I'l. |, ti,;s, 1, (i. All the sp(>eimeiis helow normal size; only in one .Ireiitriii!;, Station 20^-c. Pleurosigma glaciale (1. CI, ^■ef^;^ JJj;it., PI. ;i,-,. fipr l:< ^,,,, p .}7,; Found in plankton haul at Station 2»(/. J.enfjili of my specimei, a- 1:5 mm. Pleurosigma Grundlerii (hun. Pi'iag, Pleuro., PI. ti, fijr. i. Fouiu! Ili.S'arStaimn ols'' '■""'"'" '''' ""• '^'^ ""'"' "'^^"'^'^ "" ^^'"'^ P'^^'^ rB^wTTijB^TJSr^ 20 ( (tnndiim Arctic Kxpediliim, I Did- IS Pleuroslftma llneare . Kli.ipli.- litu- m hist rcf.-r- eiicc alxi'. '■ incorrcft. Foiiiul ut Stiitifiti W>. Pleurosifttna lanftum ^pcciiii.'ii iii.-.'.suml was aliout L". times as loim .s wid.', namrlv .■tiKlli O-l,-) imn., wi.lth O'Olll mm., aii, misiiaiiuMJ. _ , „ n This is not to 1.0 confuscil with /'. iijfinc Grun., as is Uone i>.v I'eraKallo. Fouiid at ,-«tatioii '2()li-c. Pleurosiiiina Parkerli Harrison. IV-ran. riiMiro., I'l. S. li(j. Xi. One spccimf'n at Station 27x. Pltiurosifitna speciosum W. Sni. var. gracilis PoraR. P.-rajj. Plcuro., PI. 2, tin. 19. P'ound at Station 2.i. Pleurosigma striftosum W. Sm. _ W. Sm. Hrit. Diat., I'l. 21. fin. 203: P.ran. Pl.'ur..., PI. ;>, hii. 1. Mv spe.'inirns aro nearer Perajjallo's hnure than the type shown 1..V Smith. In fnrn". it elo.selv resemMes the unt.vpieal I'. Stiub^mli in Criin. Diat. V .los I.uid, I'l. 1, tit:.'.">7. l>nt the markintis are coarser, i'ound at MalK.ns IM and Pleurosigma tenuissimum W. Sm. . ' r. . -w pi « \V. Sin. Hrit. Diat., PI. 22, fin. 21:5; CI. and (iiim. Aret. Diat., p. .jK, Pi. 4, '*"'' 'iVoth the tvi>e form, first reference alx.ve, and the var. fnipfrhnrca (Irun., second reference above, were found in the same dredRinp, Station 206-c. Pleurosigma Wansheckii Jlonk. .Micro Journ., 1S.5S, Pi. 3, fin. 7: P.rasi. Pl.-uro P . t, fi«s. 2. , 24^ This should not he coiifuseil with P. balticiun W . Mn. I'ound at Malions 20//-C and V.ic, plentiful in the former. Pseudo-Amphiprora Stauroptera O^ail.) Ci., .see Tropidoneis Stauroptera vhail.) V. 11. Pseudo-Eunotia Grun. Pseudo-Eunotia Larva Mann, sp. nov. ]'l I fiir 1' Valve aicu'itc. l.road, its dorsal side evenly and .stronply convex, its ventral side barelv concave; ends blunt, rounded; markings of closely set rows ot strong Lokd.--, generally transverse, rliglitly curve,) !nw..,r.! the apices; the beading close to th.> apices less developed, thereby Riyinj; a false senu^iiyaline appearance, somewhat overeinphasized iii the illustration. Length 00:J7 mm., width 0-007 nun., 11-2 hnes in 0-01 mm. Scarce, found only at Station 43a. il» i,w ■ _ ,,_4, '- | I'oun.i at Stations 41, .|:j„, VM. and hr, mwrnWy al,n,Ml:.nl ; tvj.ical at V.in. Rhahdonema TorelHI (1. S.I.. Atlas I'l. I'ls, (iifs. |,S-2(.; (1. Ant. Diat., !>!. |, fi^. 2() 1 lie aliovc two lllii-li.iti()iis ;iir irivcn to «ili,,ii- iliit /> /.. :' i- ^.y .. ..parated fr tins, , ^i^xi:!. l:!: j^a' ftfc' inr l-!;::.!':^ Rhl'osoleiiia Khr. Rhizosolenia styliformis UnnUt I'cian. Hliizo., 1>|. J, (i^rs. 1..-,. Foun.l in two plankf.n hatils. Stations i)h and 12,/, llu-n-. very al.und.int. Rhnicosiiima (Inin. Rhoicosigma medUerraneanum (I lVra«. 1>|,.„,„., i'l. <), fJKs. 2S-:{I: CI. X. an.l U. Diat., PI 1 fig «) 2oL' '"''''"""'" """ """" "'"' """■''"■'^" "•" n, fics. |-l. Toiind ainindantly at Stations 2( )/<-<•, II. Ilr.-in.j l:{/). Rhopalodia .Miilln Rhopaiodia Jiibha (Kiitz.) (). MiUl S;l.. .\tl.is, I'l. 2.-.;{, (iKs. 1-17; Van ll.unk Sv-,., M. .T' fi^s i..-> I- uiind only at Station j;jc. . fe- • • '• Sceptroneis Jlhr. Sceptroneis getnmata Crim. \an Ilourek Svn., I'l. :j7, fi^ ;5 ScoUopleura Grun. Scoliopleura latestriata (Breb.) dun. Sch. Atlas PI 2(il figs, 4-5. niisn.imed; Van llcurck Syn., P!. 27, fiR 12. I'ound at Station 23, scarce. .> , ^ .. ..., u^. i^. Scoliopleura tutnida (Breb.) Rab. Sell. Atlas, PI. 2G2, figs, l-fi; Van Heurck Svn., PI. 17, fit's. 11 13 ijoundat Station 43a, also scarce. " <,■{,■ n, lo. TTm-Ti •2S K I ,1)111, lull .\iiIh- t'..ii> ii«». tiilA-ls Stau' l.lif. Stauronels ancep» I'lir. Will llnii.k Svii.. I'l. I. tiH". »-■>. . ... I .1 Alilioii«li ll,f iri.int.ri- of thi- ^"•l•t|. Ih'Iohu in niilily to SiniruUi 111.- Urn.-rir li:itnr,s7<(-r..»M.. is rrlMit.r.l l-v i.m-t miiiIh,.. for .•ciiv.-m.-t..'.- Iml Ih.I M'* ili.lirMlihu a srirnlilir Ki'lirrir ilivi-iuii H. ... I. ..I II. n...r. nov. I'l. I It.', i:!. . . , . ■ . .1 V-.lv.. I.I..M.I. oval.'. i..l.ii-t; riMi massive, \Miiit<>il: .'osia.' I.cmiiiiitii! ai lli.| niaiirin in l.'af-liaiH.I plat.'s, wliidi mv sli..nul.v strip...! l.,nuil w.IiiimII.v, ami fr.an tli.' inn-r .'n.ls ..f wl.i.li tin- .'nMa.- .■M.'ii.l .■.< narr-.Nv Im-s or n.lK.-s to tlio iii...ns|)i.n.,iis nii.liaii ana; I'olar spa..' at lli.^ Mui.l .'IhI oI iIm> valii.; .•vi.l.iil. l..imth tt-0.")tl nun., xvi.llli OtU:! inin. Only iwo sp.'.ain.'i.- lonial, al Slaliiill iMI/i-c. (Mr. Dial N.K. <;r.ciilan.l, p. •-'1(1, I'l. i:!, li^r. 10; S.li. .\tla.s, I'l. 'Jl, liK- !■., Tlu~ -p.Ma..s -.•fins l.> he rare. S.v.ral lin.' sp.ciniitis w.'rc fiamd, Siation 2'.\. in two iiatli.'iiniis. Surirella strlatula Turp. _ . S.h. .\tlas, I'l. '21, li«s. IS, ■.>(t-.'l ; \aii lli'iirck >yii., I'l. .-', tins. .,-(,. Scari'i', Station V.'xj: u.-iially a very prolific sp.'cii-s. Synedra riln. Synedra affinis Km/ var. ftraciUs (Kiii/.t . almii.laiil in liotli. Synedra arctica Cnin. (not (f.M.'.i. (onn. Osi.a-. Dial., p. ltH. I'l. S, lijl. :<• ■ , , , Av.aat'.- Irnnth ..f my sp...im..ns ()■()!)",) mm., avcianc wnllli OIMII mm. FoiiikI in plankton haul at' Station »:{/. Synedra kamtschatlca (Inm. (?) CI. and (Hiin. .Vrcl. Diat.. i'l. ti, fi«s. lll-li;J. Mv spc.im.iis liav.' the wi.l.' Iiyalin." spa.'c at ih.' mi.l.ll.' and anivi' m general with \\w al.ov.', cxc.'pl that tlw inai(linal lines arc mmh slmrt.'r 1 hey ate similar to ''Thnhixsinneiiin ijdidn Perap." m I'.'rau. Antaret. Lxp. iTunce, I'l. :}, tiji. 10, which is a Sijiudra. Very common al Station 'iOy, Synedra pulchella Kiifz. Van H.Mirck Svn., I'l. tl, fip^. l-">. ,., ,. , , , , The <]).'. i.'s isnorinally fnvsh-wator, sometimes hrackish. loiiiul ahunilant at Station 23. Thalassio-sira < 1. Thalassiosira gravida CI. (Iran. Xoid. I'lankt., p. 18, fi^. 12. .,.,.., • .. Found in plankton hauls at Stations G6, \2d, 18d and 2oi>-c, common in all, jspocially the last. ^mmmmfrnt mtm ?». •-Nil. Fur ti ili-cii-^iiin of I lie III 111 it'll I III I), III, , inn TrlUonliim < I "I till- U.lill- ~rr M.uili. |»i:i(. \||, \ L'fl r ; |',,,,y. |,,„. I ■|mi,ii.. I'l. II fiu- '-li I iHiii.l (iiily III Mill 11,11 |:{„, ;,,|,| „.:hiv. nuifi. i'l. :!!i, fiys. 1-0, Tropiiloni-is l.epidoptera i(;nu.) (1. y.lll llrllivk Syil., I'l. •.»■.', (i,_„. ■_>.:(. l',,,-,.m. |)j,.|| |.' ruiliiil .It Stntion- 2(l''-c .iimI |:{,'. xmiii- in hoih. Tropidoneis Stuuroptera iH.iil.) \. n l)ii(V'lv!lI:''pl'STT'^.';-'''*^ '■'• V''- "'^"■' ■''••'■ "^- ■' •"i--'„i-l: Cr,.:. III. II. ( l\(|c, I I, ]_>, fi^. .,!)(•, iii|,|iaiiici|. Clry.. [■.•lili.l to >,.,. 111.- Hti.f.. ui liis eniiis Tni,i:,l.„i,i.< Uiv il,i. ili,!,,,,, .,,„| -•>. II, 1.)/) ,iiiil Lie; siMici' 111 ;ill. Sinilhsiiiilini^^hislin,, , f,u,,,l Sn>U. .Ui:.,„.,l Miis.nn,, Waslnii.ilni,. !,.(., •^^'' ('">i'i. Aincricaii Bacillaria, Am. .loiirii. Sci. and \rfs 1,S4'> Mintlisonian ( ..ntril.utions to Kn.mlr.lfr,., V,,] 7 ]x-,4 *^'"" "' ' ISS()\, A. lSr>.I-lS(;7. Diatonu'cs dr CluTliourf;. .M.-n.oins Sor. Sci. \at f •Ji.Tl.onrD. Jst .;d,t ,on, CiK.rhour.r. IS.-4 „„1 .,„, „|i,i.,„, j.,,is, ls«f I i. S iiiann.'s (In l.ittora! (!,. ( hdhoui-fr). i"i.uom(cs UlUN, .Ia( 0. ]N!)l.l)iafonuVs Kspon.s Nouv,.ll,.s. Marines. Fos>il<.s o.. IVIaKi„n,.-. 'i;.r T:i;:^^u^^:;;'^."x;:"i:'""" '■' ''•"'-"""" -^^"-"" ■"• ^ ^•^-; ]5itrN-, .jAiti. and Tkmpkuk, J. ISN-.. l'i<|t...n.Vs IWil^s ,l„ .lapon. Mcnmiros do la Sopiot.' ,1,. I>l,vsi,,ne ct (1 Hi>l()iiv naturcllc d,. (u'ncvc, iNSi), Tome 30 No «) Clkvk, p. T. , - . . . lS(it. JJijit^'^™ fran SiH.tslM.rK..„, Ko„k1. Svuska Wt.-Aka.l. Forhand., 1S78. "'' "i^;';"";/r..in th,. .Xrcti,- Sra, Bihan^ till Kongl. Svc.n>ka Vct.- Aka, . llandlmtiur. Ban, I, No 13. (( 'onnnunication to ti.,. IWal ^\\('di>ii Academy of Sciences. .Mardi 1'> 1,S7'{ l.SSl. NVw an.l l{are Diaton.s, Konfjl. Svenska \vt.-Akad. Hand., Bd. IS, ISS:!. |)ia,,,„,. ,.,llecte.l, luring the Kxp, dition of the Vega. From Xord- ui-kiold, A K.--\esa lApi'ditmnen, 3: ■l.-,.-,-.-,l7, I'ls. 3.-,-3S 1,S83 l.v...,. >vnop>,s ot , ,e Xaviculoid I)ia,on,s. Konsl. Sven>ka NVt.n k/.ps- Aka.lemuns Ilan.lhnKar, I^and 27, No. 3, Stockholm, KS't.-, IMn •> ( LE\K. 1'. T. and (iiu NOW, A. "' 1880. B.it,aK.. ^ur Ke„ntni>s d..r Arciis.'h.n Diatomr..n. Kongj. Svenska Dkdy J ^'''''""'^=^l'^--^'^'"l<'""'»^ Han.llinKar, Ban.l 17, No. 2, IS.SU Analysis of the Diatomaceous Cenus Caminlodiscus DkIom. ,I. 15. 18!»1. SyliofJie Aliianim, Vol. 2, I'alavii, IS!)]. Don KIN, A. ^^■'^' is:i,i: lioK "' ^''"'""' ^'*='*""''"''=«' "^ X"MliumI,.-rland, Mic. Journ., 1871. Briti.sh Diatoniaceae. .Journ. Uov. Mi,.. Soc 1S71 KnuKNiiEiui, r. ( ;. 1S.")4. Mikrog-eologie, 1S.")4. Chan, II. H. l!)0.->. Xordisehes Plankton, XIX. Dialom-.n. lOO.", (iUE(;ouv. A\ .\f. 18.^7. On nevv forms of Marine Diatomaccae, found in the Firth of Clyde GuvNow, r '" " ^■"" ^'■'"^- '^^'-'■- ''"*■• ^''"»''- '^■"'- 21, lS.n. ^ JvMscH (' Akadeniie der W issenschaften, Wien, 1S84. 1888. Diatoms of the Ciazell,. Expedition. (Pub. in Manuscript only, 1888). .:?n i'.S. Xaiiof .1 Ik rl.arium. Vol. x i)t r> Hull I .S. \at. Mus. Issi.,.i „'„|-, j; |')()7. 1920. Marino Diatoms of the Pliilii)i)in(' I.-lands. .lunc, IdLV) US National Museum Bulletin No. 100, Vol. (i, P.irt 1. M irrosropicn I Jo urnitl IS.jO, 1S.')7, 1801. Serial i)ul)lieation. PsTiirp, luix.sT. 1910. Diatoms from Xorth-lvist Gr.'cnland. Danmark-Kxpeditionen til (.roenlands Nordostkyst 190t)-1908, Bind :\, Nr. 10, 1910. Per.\c,.\ll(), H. and M. 1890-1,Ss de ISeluifiue. Anvers, is.sO-l.ss.-,. 1890. A Treatise on the Diatomaceae (Translated I'V Wvniie ]",. Baxter) London, lS9(i. 1909. Result.ats du Voyage du S. Y. Belgicu (1897-1899). Bot:ini(iue, Diatomees. Expedition antarcti(iuo beige. Anvers, 1909. 32 k Ciinndidn Arclir KxiKililloii, Un.!-IS KXIM.AXATIOX OF FKUHKs I'in'- I. -lc//?/a/////r,v ;7(«»//)/V(M»s|r. (uppci- \-;iivc).. . Y 2. Achninitlic.s rhtmihini ()s(r. (Iowit vmIvc)... X 'A. Aiiijilidni (xclii.h IIS M;inii, sp. nov v ■1. CiH-cciiiis L-iiiiirhalkii Nsis .M:iiin. sp. nov Y • ). 7''5.W- M(i, hiiiion •.V.\ K I'MTL II. t-\>- T> ^ 3 »004 02404771 Report 01 me c«»ao.„ 3-18 yo,.tME Vin: „OU ISKS. ECin«OD««M8. COKLKNTERATES. CTC » «t A: Mor r f8K8. RECENT AND PLEISTOCENE. By WiUi.„ H D.,, Par, n: S,'v5:|\?,:K^15'Y^].;,J;|-\ir- "-" "^ I^SlZ^ 1^1 Itl^' {.•plmlopiHla. Hy S. S, IkTry SfMVnRlS'Vr'^^'"^-"^^ '/;-.',„.,„,,,,.,;,, >»r •■' I rV"^ '-.^V '*y '(■'■•".^hurn .... ..(/«><.-/ .l;,„/tf, ;»»). ■iKsuil Julii n, nr;) >OM MK IX.: ANM;,.„,s. P»«AS,tU WORMS. I-KOTOZ<.ANS. n , . Part A: OI.KKKirAKJW. J.umt.riculi.ia).' Hy Vnnk Smith p.nMu.,i..u„M,,:i,\:'-i;,>;Tc..i,,;,;„;,v.v, VOI.rMK.V: IIYIt)tO<;K.ll>|ir, TIDFS, l?rt Usiiuid Sf'fitt^nih^r *.';, 1919), (lusuij .\„t,'mlnr Id', ll'Jf))', . . . (U.i'ir.l f.liniiir:/ 4, t;iSt), i/».ii(. J Jum ID, 19-JO)'. .... Usuui-il .ijird ?, /.ij';),' ■ ■ . . . 'In I ri iMriVKin). . .lasuai f.hrwmi 4, l,1fl). ■/, ,;. ■'" l>ri l>imt:,in,, Ussuid .^, i,!, ,,,1,1,. a<;_ ign)_ "1 l>ti ihii!tlii,n], , 'I" l-ri i:ni;}i,„n). . . .I.istlnl /■•,J,rujry S, I0!0). /" prcparatinn), VOLIME XI: GKoi.OCiV AND AND <; .(ICIiAI'JFICV! VOtV'^' ' ' iVV- , ''«m,ii J.,!'i fi '■i''\ iULAI, .NOir,.>. liy Kenneth i\ Chi|.,„un and .John i/ r,',, ' VOMMK Xll: THE t OPPEK ESKMIOS " "'"^ -^"'^ ' ' -'^'• Pm ,1; ^^Ifl^ f4R:s;^:j^;'i/;',V:V'::'f. A^/^Knros. ^uy r,. ,r.„n... ... ^ . r;... .,„„..., ,, ,,,,, . (Issue,! June SS, 19!S), VOM >IE XIII: ESKIMO FOLK-I.ORE VOLIME XIV: ESKIMO SONGS ^'.VCS or THK COn-KR KSKnros. „• n,.,on H. no,.„. .„., D. Jenn. VOI.IME XV: ESKIMO I.ANGl AGE AND TECIINOLOGV . (In press). i-art U. Il,(.HNOU)GV OF THL; C0I'IM:U K.^KIMbs.'. "'" P'-n"'rai:un). ' { Tu he jfrc pared), VOLIME XVI: ARCHAEOLOGY CONTRIBrTlOX. TO TKE AUrHAEOLOGV OK ..KSTEUN ARCTK' AMKHJCA. .... (To he iireiiiiied). (Index b«ued with lust number of each Volume.)