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Lea diagrammes suivants iiiustrent la mithode. 1 2 3 1 2 3 4 5 6 •3 / -i • / 'r* ^Erom the Report of Progreat of the (i^olof/ieal Sunei/ of Caniii'ENi)IX L). NOTES ON CRUSTACEA AT VANC . U, 181( Cydograpaus marmoratus White, t,it.t oi v^iuBt (no description). /y./.,.o,nv'-- "— «'- Milne.Edwara«, Annales Sci. Nat., III., xx., p. U- (150), 1853. , , , I • /,«.,„,„™ miu. S,imp»„, Proceeding. Acad. NM. S.!., P,„1»M,..„.., B,,S:'Mutu' '" ; L Indant u^o,. the 0.0.0 Ca,ifo,.„ia coa^t. J'afcm subquadrata Daiui. T.„ s„oc.i,non, .v,„„ u. <^-"«-';::/;^-^:: ,,;!:;:; from " llourttou Stewart Cluumel, Q.^^.L, Juno, i^<^, of large muisscl." Ca7icer maoister Diunx. ... <;.„»■ L..-.. .U,*„,.,o.,^ Acd. ..t. 8ci.,Vhi,a.lcl„l.,.,v„.,p. U6, 1830 (not uf Say). (7«„c....<„,V.- Danu, United States Exploring ^-^^f'^^^'^-^'l, pi. 7, tig. 1 , l852.-Stimpson, .lour. Boston Soc. Nat. Hist., vi., p. 458 (18), 1857. ••-• •• «•• •• • •• •• •• •••••• t t ••#•«••••• • • • • • • ••• ••• ••• !•..;• • •• ••!••• m ••• • • • •• ••• *••• •••• • ••• •••••• •••••• ••• •»• • •• • • •••• • • • • •• • .% •• • • • « . • •• • _• -__ • •• •,• • ••• •••••• QltEKN CUAUr.OTTK ISLANDS. 207 B ' Metacarcinu» miitji»ler A. Milnu-KdwiirdH, AiiiitUeK Hti. Nut , IV., xviii., p. 33, IHiiJ; o|). tit., v., i., p. (17, lHti4; NoiiviHo Archives 1\I«h. HiMt. Nut., I'liiis, !., p. lidl, pi. I'j, fig. 1, iHti:,. A liii'tfn oaiapiix iiom tho Qiu-cn Cliarloltc l^slalKlK. Cancer oroductus Uuiidall. lliindiill, .lour. Aciul. Nut. H.j., riiiliidelpiiiii, viii, i> I IK, 18:t!).— Divna, United Stiiti's Exploring K.xpcditlon, Cnrnt., p. If.ti, pi. 7, lig. 3.— StiniiiKon, Jmir. Bost. .Soc. Nat. IliHt., vi., p. pil ('.il), 1857. Cancer fieiinlus Stim|)sou, I'ldcfodiiigH ('Hliforiiiii Aaid. Nut. Sii., i., p. 88, 1856. Virago Soumi, 15 t<) 8 tiitli. ; inoiitli orCiiinshowii Jlarhour, 20 i'atli. ; and shallow ;- ; all fioiii tlu' (^ui'i-ii Cliarlolto Iwlands. Cancer anffntuiriiis Sliiiipson. Ktimpsoii, I'lotfL'dings Caliloriiui AlikI. ScI., I., p. 88, IHoti ; .Jour. Bos. Soc. Nat. lILst., vi., p. .112 ('J'.l), pi. IS, 1857. ? I'lalijcarcinua recurvidens Bate, in ,1. K. Ijord, Ntitiiralitit in VancoJiver Island, ii., p. 'JUU, ISiiO. Small ak'oliolii- specimens from Virago Soiiiul, 15 to S f'atli., and 20 fath., mouth of Ciimshewa llarhonr, (^.O.I. A dry earapax from tho saino fi^roup of islands (no special locality given) is 83 """• long and 133 broad. Trichocarcinus Oreijonensis Mi»'i's. Tricocera Oregom nsis Dana, I'nitcd States Kxploring B^xpedition, Crnst., p. '.!t)9, pi. 18, tig. 5, 1852. Trichocarcinus Oreyoncnsis Rlier.s, I'rofoodings Zool. Soc. Loudon, 187D, p. 34 {Tricoceni Hii llaan, 18;!H, preoccupied). A yoim^- specitnen from Vancouver Island, and the earapax and clielipeds ol' a .irger specimen from the (iuecn Charlotte Islands. These specimens agree with JJana's di'.scrijition and figure, except (hat the teeth of tho posterolateral margin are more indistinct than shown in his figure, some of tiiem being nearly or quite obsolete. In all the larger sj)ecimens which I iiavo examined, the dorsal surface of the earapax is rougher and the areolets more protuberant thait in small specimens, and in very small speeiinons the canipax is nearly smooth and regularly convex. A small specimen, dredged by Mr. ,1. Richarilson in the Gulf of (u'oi'gia in 1875, and referred to by Mr. VVhitciives as Trichoccra Oreyonmsis .' on my authority (J'anadlnn Naturalist, Vol. viii., No. 8, 1878), apjicars to repre.seiit a distinct species. I have seen another and much larger s])ecimen of the same form from Washington Terri- tory, collected l»y .). (J. Swan (Smithsonian Institution). In this species (he antero-lateral margin of the earapax is strongly U])turned, oos( n .iKoi.udirAi. sunvKV ok canapa. ;;:ir:;:;::;^::;:i:t;:;;:;M.'^.'o'H.i-^»-n,.^ n.,,.. :';,;;;,:;::::;'.; «i.ii'c -"- i« ■'" " •- ; '": ' : , „.,■ ■,.. ..., (I.- ,."»..•.;...■ |.«H ..r .1,0 W:M .vsu. „K ..I-.1I M„. |.,-oha.onu,...s a,v omanmnl,..! u.ll, ».. ....U. '" I ' n I' wl i,-h ar.. la,-i!>- anCoruMOy l.at sr,.lually 1.h..« ;:' j,;„s, wl,',.!, ;..■.. v„,.y s„,o,..l,, >.x..,,.. ..., U,>. fla,t.,u,l »a,u,u,(. ..1 tlu' gastric protulionmcoH just ilcscnbeil. White Ammls Mag. Nat. Hist., xvii., p. 11.7, IHl.',; Voyaj,.. ..I Nun., . lUfe ' Cnlt., p. 14, pl. 3, 1 848.-Uana, United States Exploring Kxpcattu.n. p. :u):i, pl. 18, fig. 8, 1852. Thcrar. tluro specimens ..f Telmessus tVu.n tho linoon ( l.afl.. t. IslLuls: two small .nulos, in alcohol, tro.n shallow ''-^f' ;;^; .^'.^^ and broken fcMualc nuteh la,-.^or than tho nuUos. 1 ho '^- • " ^-^^^ ve,-y well with White's ti.u.e and is ahout the sanu- s..e a V c specimen, thoa,h of the opposite sex The la,.,e,. <' ^ ;; ;t uorees with Dana's ti-ure and dosenplu.n, exeepl thai the nuu.an ^r;! fn>nt a..: not quite as aeute -^ 1^-; >-"-';;;: ^'-;;;;; ,Mlv very little heyond the lalen,;. The tooth lornuno- the lat-, al 1 : \he carapax is nuteh more pn>nnnent_ than in t .e .e.na Tl^ smaller male ditlers Iron, the larger in having the antero-lat. a^ :.gins of the eavapax .early parallel, ami the tooth --";'|; ^ ^ lutoml an.We relatively even ntuch n,oro prominent than >n the huge ^^ tLs. dinere.^es are .hown in the IbUowing n.-asurenu-nts ol the carapaces of the thi-ee specimens:— Length, inclmiing frontal e\niwx. li'i '"'" i'.R-adth ill trout of latoral tooth 5-7 Hieadth, inclmiing lateral tcotli 8-9 The .litVerences arc apparently due to the age of ihe speeimen,. and I think there can be little doubt that Whites speci.ne.. and Daj.a s were of the same species. Whether the T. cheiragonus described by Tilesius and by Brandt, and T. acvfidem Miers (ex Stimpson), are also of the same species, I am uncertain. The synonymy in this genus .s still it. ^reat confusion, and the relations of the ditVere.d forms ctm be made out satisfactorily o.dy by careful examination of a large series of specimens. 20-3 I'.tl ? (UJ-f) S''-2 1 t t 1 n ^: I (iUKEN ('IIARI.OTTK I8I,ANI»4. 20'.; H On'l()rim; Kxpi'tlition, Crust,, p. lofi, pi. :j, fiK. •-•, iHr.2(n- Oregonia hirUt Dana, ibid., p. 107, pi. 3, flg. 3, 1852 ( ? ). ? Iheijonia Innjimana Mute, Pioccciiiiigs Ztmltiniciil Sociuty London, 18C4, p. G(i3, IH(;5; in J. K. Lord, Nutundiot in Viiucouvur Isliuid, ii., p. 267, ISliC. \'iraij;() Soiiiul, (^.d., 15 to 8 fath., nlso Yuucouvor Islumi. TIr' Hcrics of H|tcci!iu»iis is surtkicnt to show that the two foriim (Icscrihi'd liy Daiisi aro scxiial ami belong to ono spcjics, tho (jnirilis hcing l)asi'(l on I lie ailiill inalo and tlio hirtd on tho two fornis of llie fonuilo. In the chai'actor.'^ of tho I'ostral 8])inos and tho rest of tlie carapa.x, all tiio larger males boforo nic agrco with the (Inscription and tiguros of (/r' ' ' e, !•• in most similai" cases, the larger ot the sterih' individuals s'' '• ei'able aMpi-oach to the male in the form of the earapax, etc In the largest male betbre me the merus of the rhe'ip very nearly or |>:iroritI.v liccii an iulmixhirc ot s|>eciiiieiiM from some roirion or regions l':ir soiitli of ViUicouver ImIhihI, in the oollcctioii whii^h served a,i tho hii.sis of Uato'« ohnrteron " ViMicoiivor Ishiml Oralis '" in the work above relerrod to, ami that tliis fact also adds to the ditliciilty of dotcrmiiiin« tlic species there described. Hate him- self remarked upon the minsliiip of northern and sontiierii tonus in the collei-tioii, but he doe.s not sooni to have snispcct.-d any mistake in resard to tlie localities troni which the speciiuens eanie. lam aware that niaiiy tropical and siiiitropical marine species 'xtend lar north iilonjr the I'aeilic, American coast, but it is scan-cly eoneeivablc that such an n cmblane of species as Hate's list indicates should exist in an., .me faunal rct;ion. The list coiuains not only tropical facilie American species but also Central and South I'acitii'. and even tropical .Atlantic species, (^omo of the incoiisriiities may, however, bo due to wroiii; idtMitilicatioiis, as in the case ol tho rViV'((ii((f/»'( about to lie mentioned: but, makim: all re isoi;ably siipposablu allow.iiico tor ull.^- takesof this kind, there is still sullicienl evidence of a mix! ore of specimens from ilittcront tauiiie, tn>v; auM shallow .Iml.uiu.ix. I'oH Sim,.snn to iK.rlli «'nil of Vancoiivi'f Maud. Snirti nrutil'i'DnH Dana. u'ai' Vicloria, Vaiiroiivor Island. Anollior male Two maK's tVom ii ... II ,,iili tli.'Mo was collecU'd at llio same locality HiK'cimtM ai;itrin- w "11 Willi IIHSL was M..U bv Mr \i. .MiddlHoii ill lSTr>, and is irliM-ml t.. l.y Mr. W l.itoau-s, on .ny antlioiif . as -Sryra, sp. un.lt." iC.nu.Han Natur.lis', Vol. vn. No S ISTS") .Ml li..'M« siM>cinuMis aiv mnci. lai-.T ll.an tl..« ones ,l..s.TilHMl l.v i.ai.a.and dim-r mucl, Iron, ids dcsiis eol- l,,,.d 1. V I).-. l>aws.,n show a noarc.' approach to !)an« s ti-u.vs, and I „nw think tiuMc is little douht that, Dui.'fs description an.l tiKuros we.-o huHod on lc,n:dcs and youn.^^ males, and that the . ■•.unens heloiv me nre tho fullv iidiiH males i.l'the same species. I„ the specimens hoioro me, the lamelliform n.strum is very much ex- ,,„,U.d laterally, so thai, it is as wide, or even consi.leral.ly wm ler .han, Iho widU. ,.!• the front, hctween the pra-oeular sj.incs, and the lohe.s are ',0 widUi ..f the front, lictween u.e ]>neoei.uv. .,,....., ..-. ...« ,n„.h less divei-ent anteriorly than sIh.wi, in Damis l.^niiv. The protuheiance upon each l.ranchial n-iun is elongated and excessively iu-veloped, an.l posteii..rly it pr..,!.'. is s.. much as t.. .»v.«.l,an,i;- the ,„,ral in:,n;in ..f the .•arapa.K. The anleri..! .-ardia.- pn-laberaneo is tuherc..l:.r an.l ol.tuse an.l fnlly as liiol. as the hiaiuliial p.-.dn .er- nnees, hut separal.'.l fr<.m them an.l from the lar.i^e oastne pmluh..-- •uicehv af...ad and .leep .lepr.'ssi.H. ; the p..sl.'rior ear.liae prolul.eran.-e 'is sm:dl,but .'.M.ical an.l c.mspieuous. The whole .i^^astric r.-.-n is ,„,„,,,,,„„, „..l separate.1 iron, the l.ranchial re-ion, ..n each side, hy Iv deep an.l narn.w cervical .s-T-ove. The p..steri..r ^-astnc elevati.M, is lar-o an.l ..hluscly tuher.-ular. ^vhile the ant..ri..r is small and e.mi.'ai. Tl"ehelip.'dsare prop..rli..nal.ly miuh la.-vr every way than in Dana s specimens an.l the lamellilorm crest on the prop.ulus is much hroader. The ditVeren.-.-s in vhe ch.dip.'.ls, an.l partially also th..so in the ca.a- pax, are shown hy the iolhtwini;- measurements of the specimens colleete.l by Dr. Daws.)n :— ■R »■ QIIKBN CTIARI.OTTK I.sr,.\NI»M. litsngUi vf nimpiix, iiichuliiih loxtnitn :i(i « " OrcatoHt brt'iuitli iK^twccii nmr^ini> 217 » '' •' iMiimliiiil protiilK'-'MiccH 27 5 ItcnKtlicI' roKtriim tVinii ImMiMif piii'diiiliirHiiiiic. . i' '• Uri'iit«'Ht l)reiMlth of niMtrum 77 Li'iijjth o! JinruM in tliflipcdit ?2 lA'iiKth of propodim 310 I,i!np;tli oldiictyliiH 15 <> Hifiwltli of (liictviiis 1') :> !ll H :i!>t< 2(! H "2 <(.,'■, lo:i 2H-5 .170 Kifi 12 r. Anomuka. Ifaj>(il<,(/iisfi'r imrmis Sliinpson. HtimpKoii, Aiu.iilH Lyr.Mim Nut. HiHi. "i w York, vii., I>. 241! (115), IHfiO. I rcf'or f(» this spocios, with sonu" (hml)l, :i siiij^U* li'inalo from llio h\u)\vh of Iht' (^iioon Charlotli- Islands. Tlio flielipcls aro not describod oy Sliinpson, but in the spccinicn bol'oro inc; Ihoy are vory unequal, tlx v'lj^hi \h''\\\i<; twice as stout us the lel'l, veiy niuih loss setose, and ihe exeavated tin^vrs are entirei^ without horny lips. Eiipagurm (jra.iosimaitux .Stinij)S()n. Stimpson, Annuls liycuuni Nat. Hist. New York, vii., p. 'JO (44), 18.50. Sevonil dry H]toeiniens, most of them vory small, from neai- N'ieloi-ia. V.I. 1 tli= k it not ini))roi)able that this speeies will prove to be synonymous with i'J, M'ukh'iidoifU Brandt. JJrandt's s|)eeios was descrili.'d and ti<'uriMl from a speeimen eonsiderably lar-ror than the specimens examined by Stimpson or Ihoso before \\w, and it very likely is only the fully adult form of Stimpson's sj)ocics. Eupdijurtis fenuimanus Stimpson (ex Dana). One specimen from shallow drcdg-ings, Port Simpson to the north end of Vrtiieouver Island. The propodus of the lin■^rol• chcli]ted is fully as broad as in Dana's specimens, Init the inner eil,i;e is less sluirply dentate and the outer cd.ge less strongly curved. There is no doubt of its identity with Dana's species, however. There aro sevcra' small spocimons of Eupar/urus fiom 15 to 8 fath., Virago Sound, 20 fath., mouth of Oiimshewa Harbour, ai\d from Hous- ton Stewart Channel, Q.C.I. , wbicb are distinct from either of Ihe above species, but they appear to be immature and aro not easily determined. PiKjunstcs iuru'idus Stimpson. Eupagurm tnrgidm Stimpson, Proceedings I'.oston Soc. Nat. Hist., vi., p. 80, ■ 857. Clibanarius liirpi^liis Sti» son, journal Boston Soc. Nat. Hist., vi., p. 484 (44), pi. '■il, tig. 1, 1857. oi.) 12 B (1E0I,0(1K'AI, SUKVKV OF CANADA. Pagurhki, lun/Uus S(iini,s..n, Pn..cc; Ai'»'il« l-yieuin Nat. Hist., New York, vii.,1). 8G (4(1)- !«;">'-' Not ill Dr. l)u\vs..i.'s (•..lliM-lioii, l>iil. a large male was dredged in the (^iilfofCeorgia l>y Mr. .1. Uieliiirdsou in IST5. Macri'HA. Gebt'a Piir/ettensis Danti. A mule S") """ long, siiore, (^iieeii ( 'harlot te Lslancb. CniiKjim nil(ieeimens are all di-y and in rather had coiidition for a earcfnl comparison, hut they all differ considerably from any Atlantic speci- mens which 1 have" seen. In the specimens Irom Vancouver, the rostrum and the spines of the dorsal carina of the carapax are longer and .nore slciuler ihan in si)ecimens from off Nova Scotia and from the (udf of St. liawrcnc- In the Vancouver specimens, the dorsal carina on the third, fourth and fifth segments of the abdomen is broad and rounded, or Ihitteiicd, and scarcely reaches the jiosterior edges of the segments, and the two ca.inu' upon the sixth segment are rounded and fade out in the same way before reaching the jiosterior extren>ity of the segment; while in the Atlantic specimens referred to, the carina upon The third, fourth and fifth segments is acute, and on the lifth segment ])r())ects from the i)ostcrior margin in a more or less conspic- mm-. triangillai- tooth, and the carina' on the sixth segment are acute and continue to or a little over the po.sterior extremity of the segnuuit. These ililfcivuces may possibly indicate distinct geographical sjiecies. ParacriUK/oit I'diinatiis Dana. Vaiu'ouvi'r Island. H^pjiuli/f,' (utiniirdii Milne-Kd wards. IIi,,l,i,hih (laimonlli Milne-K.lwanls, Hist. nut. dus Cnist., ii., p. :!T8, 1837. Ui,,,,ol,it<' ,,„nd,iUJ\,n,u, I'.oll, History cf iUitish Stalk-eyed Crustacea, p. 294. [1850?] llij.t^oliilc Belcheri. Bell, in Bddier, Last . ' tlie Arctic Voyages in Heardi of Sir .I..I1U I''ranUliii, vol. ii., p. 40'J. pi. :'.4, fig. 1, 1855. u ir ai ai QUEEN OIIAUI.OTTE I&f.ANnS. 213 B A siiifjjlo tiry fcmiilo sjtocimon from Vtmcoiivor Island appears iiiiquostioiiably of this species. It is aboiil I]!}"""- loiiij ; tho curapax, incliuliui; llio rostnun, 13-8"""- ; the roHtruin, T.'J. Tiie dorsal carina is armed \vi*h six tooth, of which throe are on the rostnun, anil there are three teeth in the lowei" cd^eoC'hi' rostrum. Jlip})ulijte spiniis White. Cancer spinns Soi/erby, Britisli Miscellany, p. 47, pi. 23, 1805. Alphaiis sphiiis Leacli, '• Ediiitiurph Kncyi'Iopodia, vii., p. 431, 1813-14," (Mier.><). American edit., vii., p. 'J71 ; TrariHactions Liiineaii Soc. London, xi., p. 347, 1815. Hippoh/te Sowirhoei Lcacii, Malacostraca Podophtlialmata Uritannia-, pi. 39, 1817. Hippolyte sjiimis Wiiitc, List Crust. British Museum, p. 7G, 1847. — Bell, History of British Crust^icea, p. 284 [1847?]. J/ippoli/le spina Stimpson, Proceedings Acad. Nat. Sci. Philadelphia, xii., p. 34(103), 1860; Annals Lyceum Nut. Hist. New York, x., p. 12C, 1871. There are seven diy specimens from Vancouver Island, and two m alcohol fi'om shallow drodoiMi;-, Queen Charlotte Islands, which agree well with ..i.tlantic s))ecimen8 ol' this species. Ifippohite Phippsii Kriiyer. Hippolyte Phippdi Kriiyer, Naturhistorisk Tidsskritt, iii., p. 575, 1841 {$). llippoh/le turgida Kriiyer, ibid., p. 575. 1841 ( ? ). Hippolyte vihrans Stimpson, Amials liyceum Nat. Hist. New York, x., p. 125, 1871 (o^ ""'•)■ Hippolyte Ockotetisis Brandt, MiddendortY's Sibirische Reise, ii., p. 120, 1)1. 5, fig. 17, 184'J(?). A female from 15 to H fath.. Virago Sound, Q.O.T. Length, :J2"""- ; length of cara])ax, iiKliiding rostrum, 11-G ; rostruni, 5-2. Tho dorsal carina of the cara])ax and n sti-um is ai-mod with olovou teeth, of which tho thi-eo jwsterior are the lai-gi'r, situated near the middle of tho cara])ax and sei)arated considerably from the one next in front, which is just over the base of tho rosti-uni ; the remaining teeth ai*e succes- sively nearer to each other toward the tip, which is itself tridentate. There are in addition four teeth ou the obli(pie anterior part of tho iid'erioi- edge of the rostrn:n. The dentition of the caraitax and rostrum is thus si'en to ap]troach jiretty closely to Brandt's //. Ocho- terisis, and 3-01 the specimen api.ears to be un((Uestionably s])ecifically identical with the \vell-UiH)wn Atlantic sj)ccies, so that 1 have little doubt that Brandt's species is only a variety of the female of //. Phippsii. 214 V. (iKOI.OniCAT. SURVEY OK CANADA. JlippoJijtc hrci'i rosin's I)nii:t. Daim, Unitod States Explorinjj; Expctdition, Crust., p. r>C,(;, pi. 30, fig. 5, 1352 (given as //. rurrirostrix on pliite), A dry tbmiilc s])(>('inuMi uhoiit 24""" lonu,-. Irom V^aiicoiivi-r Island, ai^voos well with r'aiia's (i<;uro tiiid (U'sorij)ti(>n. Ifippoh/ic (Invnldndicii Micrs. Ashirm (Iritnlaihlicns .1.0. Kiibricins, Systema Entomologia^, p. 410, 1775; Fintomolojriii systematieii. ii., p. 181. 1793. CdDcraculedtiis O. Kiilnieiiis, Fauna Qneiiliiiidica, j). X\9, 1780. Ahihe'is iiculcttlus Sabine, in Supplement to Appendix of Parry's (first) Voj-.agc, p. ir.wxviii,, pi. li, iigs. r)-8, 1824. Ififpoli/tc iicu/('ii/(i J. ('. lloss, in John Koss, Appendix to Narrative of a Second Voyage in Search of the North-west Passage, p. Ixxxiii., ia:!r). nipjioli/te armtla Owen, Voyage of the Blo.ssom, p. SS, pi. 27, lig. 2. 1 830 ( ? ). Ifippoli/te cornuta Owen, op. eit., p. 89, pi. 28, fig. 2, 1839 ( ^ ). IJippoli/te Grivulandica Micrs, Annals and Magazine Nat. Hist,, IV., xx., p. 02 (12), 1877. A f'cmaU', 44"""- long, fi-om sliallow drod«,nn_ir, Ciuoeu Charlotte Islands. Paiiihtlus Ddiur Stinipson. Stimpson, Proceedings Moston Sor. Nat. Hist., vi., p. 87, 18,'">7; .lourual Boston Soc. Nat. Hist., vi.. p. 502 (02), pi. 21, tigs. 0-7, 1857. Several small dry specimens from Vanconvcr Island, and an alecyholie speeimen from shallow dredgini;s, (^neen (Jhurlotto Islands. The last specimen is 74"""- lont;-; l!ic (•ara])a.K incliidinL!; rostrum, 33"""-; rostrum, 1*7 "f)"""; tncre are ten teeth in the doi'sal erosl,, hall" heini;; on the roslrum and hall' upon the earapax, and in addition there are three at the tip and live l»oneatli the rostrum. In general appearance, and particularly in the form and dentition of the eara])ax and I'ostrum, this species approaches very near to P. jAaiycc.i'os Urandt (IMiddendortr's Sibirisehe JJeise, ii., ]). 123, pi. 5, tig. 20, IS.'il). Unt, aeeording lo Brandt's description, the cara])ax of the plati/crros is clothed with sh()rt hairs, while in the Ihoui' the cara{)ax and abdomen are smoi tii and entin'ly naki'd. Pandalus 2>ubcsccntiihts Dana. An alcoholic specimen IVoin " shallow dredging, Tort Simpson to north end of Vancouver Island.'' The s]iecimen is 4!V""'- long ; the cara])ax including rostrum, 25; rostrum, 14. There are lourtecn teeth in the doi'sal crest, live on the carajiax and nine on the rostrum; the extremity of tlio rostrum is unarmed above except at the tip, which is QUEEN CTIAnLOTTK ISLANDS. 21 Tl H I)i(loiitato; beneath it isuimed witli ei,i;lit teeth, wliieh oxtoml l«» the tip. ClTMACEA. Dinstijlojms, gen. nov. Tlu' species for which this ^einis is pro])()sed is very closely allied to Didstijlis ill the sti'iiciiire of the api)eiidni;-es of the cephaloiiera'Oii and ill the stnicture of the pleoii, hut itditVei's from i>/r/,s//y//,s-, and, as far as 1 know, frojn the heretofore descriheil ;er than the ploon, compressed lali-rally so that the breadth is lidlc more than a fourth of the leni;th, and the part made u|. of the frei- segments is fully as wide and as high as the carapax. The cara))ax is more than twice as long- as high and smoothly roi'iidcd above, (hough the dorsum is com])i'essed somewhat anteriorly. The eye is obscure or wanting, and the anterior lobes of the carajiax extend tar in front of the ophthalmic l(d)e and i'orm a pr<>:ninent and acute rostrum. There is a deoj) anteiinal sinus (much deeper than in the species of Ditutjjlig) in the anterior margin below the rostrum and bounded inferiorly by the promiiu-nt dentiform anti'rodatoral angle, back of which the lateral margin is dentateil for a short distance. The entire siirfac(> of the ca''apax, as well as the dorsal surface of the free segments oi' the pei-a'on, is pertectly smooth, naked and highly polished, but tlu're are four nearly ecpudislant, faintly indicated transverse lines crossing the anterior half of the carajtax and evidently marking 'lie areolation so conspicuous in some s])ecies of Diasiijlis. The lirst and second of the live l\w segments of the peru>on are short and nearly or quite covered each side by the third segment, which is itself slu»rt above but greatly cx])andcd each side into a large plate a third as long as llie carapax ; the dorsal jtart of the fourth segment is greatly elongated, and lies between iind abo-, o the lateral prolongations of the third segment : and the te:gal and epimeral portions of these (wo segments are anchylosed or closely united together, so that the I' shaped suture between them is only ■ 21fi B OEOLOdlOAT, SITRVEY OV CANADA. faintly indicated. Tlio iit'tli scijjnu-nt is small, and noarly covered each side l.y flic lateral expansions of tlic Conrtli. There arc two slentler suhniedian spines upon the ventral side of the fifth sesfment, and there is a similar single median s])ine on the first sci^incnt of the pleon. The antcnnuhe ai'C short, the peduncle reaching scarcely beyond the rostrum ; the first segment is stout and about as long as the second and third together, the second is short and stout, and (he third, ov ulti- mate, about half the diameter of the seconil hut longer than it; the major tlagellum is slender ami about half as long as the peduncle; the minor tlagellum is little longer than the tirst segment of the major, and is apjtarently triarticulate. The rudinuMitaiy antenmi is scarcely longer than the first segment of the antennula, but has the penultimate segment elongated to alxmt four times its diameter, while all the other segments are \evy short. The first gnathopods (second maxillipeds) are nearly as m I)iasti/li.<, but are very long and slender, and the basal segments are but little stouter than the terminal. The second ^nathoijods reach a little beyond the ti]) of the rostiiim : the basal segment in each reaches to the antero-iateral angle of the carapax and is very much expanded distally, so that the two together completely close the space between the lateral margins of the carapax ; the inner angle of the distal end projects in a very prominent and acute tooth, and the inner edge is margined with short plumose setu', but the outer surface is smooth and naked like the carapax ; the ischium is very short niid fully twice as broad as long; the merus is about twice as long as the ischium, not more than half as broad, and bears on the middle ol' its outer margin a very long plumose seta; the three distal segments are very slender, sulKMiual in length, and each is considerably longer than the merus. The tip of the flagellum of the oxognath reaches slightly beyond the middle of the basis of the cndopod itseli". The first peiwopods are slender and scarcely as long as the second gnathopods, the tiji of the carpus not quite reaching the distal end of the basis of the gnathopod ; the ischium is scarcely longer than broad, the merus twice as long as the ischium, and the three distal segments Hubequal in length an picoii is cylindrical and slender throui^hoiit, very much nar- rower than (lie cephaloperaM/n, and the sei;inentH incroawc wlif^htly and regularly III )ni (he Hrst to liio sixth. Tlie telson is shorter than tho sixth sei!;nient, swollen lor the pi'oximal liall" its lent;th, then suddeidy nai'rowed into a slender terminal [jortion which is armed either side with ai)ouL live or six very slender spinitorm sotic, and at tho tip with two slylil'orm seta- neai'ly half as loiij^ as the tolson itself. Tho ])edu>icles of the uropods are sunder, not (luite twice as Um^ as the Iclson and ai-mcd aloni-' the distal liiilf of the inner mai-gin with approximat»'ly ten very long seta\ The inntw ramus is narrow, about half as long as the peduncle, composed of three segments, armed along tho inner edge with approximately twelve slender spines, at tho tip with a lai'ger spine, and along tho outer edge with a few seta'. Tho outer ramus is a little longer than the inner, slender, and armed along the outer edi^i' and at the lij) with sotiform spinules. Tho telson and uropods are more or less imperfect in all the specimens examined, and do not admit of very exact description. All (he mdles examined are imnuitui-e and of about the same size as the fonuiles. Tlicy dilfor from the females, as in tho species of Di((t