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Les diagrammes suivants illustrent la mAthode. 2 3 5 6 MIOOCOPY MSOIUTION TBT CHART (ANSI ond ISO TEST CHART No. 2| ^ -APPLIED IM^GE In '653 East Uair street ?,°?l'f""' '"" '="'' '»609 USA (716) <8J - 0300 - Pnon, ('16) 288- 5989 - Fo« REPORT OF THE CANADIAN ARCTIC EXPEDITION 1913-18 VOLUME VII: CRUSIACEA PART C: CUMACEA By W. T. CALUAN SOUTHERN PARTY— 1913-16 G I ■:? 1 3 C2i pt . r: OTTAWA THOMAS MULVEY PRINTER TO THE KING'S MOST BXCBLLBNT MAJESTY 1920 Issued L^rlS, 1920 Report of the Canadian Arctic Expedition, 1913-18. VOLUME VII: CRUSTACEA Part A: Part B: Part C: Part D: Part E: Part F: Part G: Part H: Part I: Part J: Part K: Part L: Part M; DECAPOD CRUSTACEANS. By Mary J. RiUhbun (hswd August 18, 1919) . SCHIZOPOD CRUSTACEANS. By Waldo L. Sehmitt. (Iitued September SI, 1919). CUMACEA. By W. T. Calraan (;„ p,,,,), ISOPODA. By Miss P. L. Boono .(In preis). AMPHIPODA. By Clarence R. .Shoemaker (Issued Seplemher 7, 19S0). PYCNOGONIDA. Leon J. Cole (/„ p^^,,) EUPHYLLOPODA. By F . Johanscn '. (/„ preparatum)'. CLADOCERA. By Chaucey Juday {Issued June 23, 1990). OSTRACODA. By R. W. Sharpe (/„ preparation). FRESHWATER COPEPODA. By C. Dwight Marsh (IssvM April il, 1910). MARINE COPEPODA. By A. Willey (Issued June S5, 1920). PARAK TIC COPEPODA. By Charles B. Wilson (h,ue,l August 6, 1920). CT-RIPEDIA. By U. A. Pilsbtj' (In preparation). OouqLas LibRAuy quecN's UNiveusiiy AT kiNQsxroN kiNQSTON ONTARIO CANADA £:■•■*. REPORT OF THt: CANADIAN ARCTIC EXPEDITION 1913-18 VOLUME VII: CRUSTACEA PART C: CUMACEA By W. T CALMAN SOUTHERN PARTY 1913-16 l.'7l I OTT 'A THOMAf MULVEY PRINTER TO THE KING'S MOST EXCE' LENT MAJESTY 111.?. O-'ober 15, ll.'O .. i Cumacvu of the Canadian Arctic Kxpctlition I'MJ-PHM. |t\ W r. . U.\I\S. I> Si . lii l>iiiiitii nl iij /(i(i/i>f/i/, liiili'>h Murium I \iiluiiil lli~h>iii >, 'I'llf rdllcclliill 111 tllr-i- < ril-t:i>i :l iililllilli'il \i\ Mr. V. .lullllllM'li illllinu fl"' < ':tli;iiiull >lil.lll \~ III t <>ll-lilrr.il>l< illtl ri'^t ;i< loriiiliti troiii II nuH'ii liitliiriii tjniii' um \|iliiiri| in ri'-in ri ut ilil- ;i- ' llMl^•t iitliir uri'iip- of iiiiirlni' Miiiintil''. 'I'lli' full -yilimyiny of tin- -|)rru> llirlltlitliril will lir follllil III Slrlililllll'- ri'vi^iiiii iif till' ( 'iiiiiiirrii i|>a^ I'ii'rti'irli. I.iif. :triliiiiii-li limnlf- l'!xpri|itil. Ill.ti I M.'lllirii'trMrii l\ ,i I'.I'.MI. \rii-l ilf tlir AllH'lirMII riTOnli lire ijiliili-il ill lliv pujicr nil the < illll.'ii r:i itf tlir \ . S. NmIiiiII:'' Mll^rillll I Friir v. S, Niit. Mill., XI, I, mU', p. iMiiii. DiiiNtyliHrathl;!! Ki.,.\ii l.iicnhlii "Sluliitii Iv.'. ( liiiillMiiirii point. UMllnir-t iiiirt, Niirthwi'«t 'i'crritoric-i, !il>i'iif Int. t'lT o.'i' N., Innu. Iti.s tir \\ . .M;i\ . Ifijii I'Tom ^luiiiiu'li u{ CoUiis iiiiiiilniitniix." I finnilr. Hiniiuk.^. I'lir p;irti;ill\ i|itir«li i| -'priliii'ii i^ not in :i nimlil ion to pmiiil, iirciiiiiti' ili'lirmin.'ilion of -pirilir i harintii-. but from it-i A/.i' (111 iiini.> aiiil from till' iilxnirc of ;i inurkril u;ip liii \miii tlir ..'nil ami ^Jrij iii:« it may Im' ri'ffrrcil to tlii» widrly (li^tril'UtiMJ -pi ric« niilirr t' to It. .■nilintn, 'I'll tin- synoliyiliy of tlli-* <.pi'cir-i .iliou 1, I tliink. lie ml° N'., loiiu. '■•■">' N\ • i i- not li> ln' finiiid iii tho Mriti>*li .Mu»riiiii I'ollcction, Imt from tlic (iirun-. it .■ilinost ■rltiinly ln'iuiiKcil to I), iiilhkii. DiUHtyliN HUk'UtU < ilinali. I.iiailitij. Station "JT^, "t olliii-oii point, .M;isk;i, lat, tilt^ 'ilt' (Hi" \.. lotij; 144' 4!»' ,-)7" \V., ;{r(i Octol.ir, I'.H;;. ,\l.out :{ fathoms. .Mud with .alc.n'." Many spci'imi'tis. Uimark.f. Thi" tVniaii'-, iioiir of wliiili i- oviucrous, .■mri'i' vitv rjosi'jy with the specimens wliiih 1 desirilptd i I'roe. C.S. \,it. Mus. XI.I, liui', p tir)4) from !in Alaskan locality far to the smith-wf-t of that now recoriled "lie .'iilult males, all of which are liailly damaged, ilitVer from i\|)ical males I). mtfikii in th ■ rather more eloiiyated carapace. The ridne iros-'ii/ the ,.sal surface lieliiiid the ocular lohe is jess marked than in the tVi laltj aii't tu'ars no teeth, l>ut the vertical continuation of it on the -ide of tin! eary^i ic- is strong and serrated and i> continued, lielow the lateral keel of »lie carapci •, the upper lip of !i deep -iipr.i-inarjriiial furrow. In neither sex have I lieeii alile to perceivr |iium« • any di»'iiict evidence of orulur structure on the small ocular lohe In preserved specimen- of I). idtlikii, however, the eye is no more distinct th.in it is here, arid the use made of this character hy Steliliinir ' I ),i- Tierreiih. ' iimacea, p. 00) for separaliiiii the two -iiecies is not jtistitied. Diastylis sulcata var. Lnealiliiii. Station 2'6<>. ■< (lilin-on I'oiiit, .\iask;i, Slh July liUl. I'rom stomach of Snireliniis vinJmn." Many females (some ovineroiisi and younji males. ' I'llih.li,. I I., pjriiiis^ion ,,t th.' Tnl-ii ■■ "I H"' Itriii-li Miisuuiii. t V Cm {Station 27c. •'Lajjooii-hay at Collinsnn poiii,, Alaska, l.")tli SeptcniliiT H)i;i. 0-1 fiiot of water." 1 adult inalf. UvmurkK. The females and youn(j males from the first-named loeality (lifTer from typical specimens of I), .iidvnta in lackinR the furrow from which the species takes its name. While the spiniferous ridtje crossing the fror»tal lohe i.s well-marked, its vertical continuation on the side of tlie carapace is indi.stinct, and there is no horizontal rid^e or furrow ai)ove the lower marKin. The only other differences worthy of mention are that the iiostero-lateral prolongations" of the last thoracic somite are shorter and less acute, and that the telson, in.stead of heinp; longer than the peduncles of the uropods, is a little shorter. On tlie other hand the s|)ecimeiis agree with /). sulcata and differ from D. rathkn in the less inflated form of the carapac.'. which is smooth except for the transverse r(,w of si)inules on the frontal lohe. and in the greater backward l)rolo!igatioii of the side-plates of the third and fourth free thoracic somites, leading to a marked separation hetween the second and third pairs of legs. It nmst he admitted that these difTerences of fai'ies are hard to define with precision and are unconvincing as :•, ground for specific separation. Although the speci- mens appeivr to me to resemhle the types of D. sulcata more c'oselv than they do any of the forms of the polymorphic D. rothkii with which I have compared them, they justify a .strong suspicion that D. sulcata nuiv be, at most, onlv a local race of that species. The male from lagoon bay. lacking the supra-marginal furrow of the typical males of D. sulcata described above, approaches /). rathkii even more clo.sely than do the females and it is only recorded here because of its agreement in size with the females found in the same neighbourhood. Diastylisgoodsiri fRell). Locality. —iiUit ion 43rt. -'Off Cockburn i)oint, Dolphin and Union strait> Northwest Territories, about lat. 08° '>()' N., long. 115° W.. 13th September. 1915. A I -out 50 fathoms. Mud with pebbles: no algse." 1 male, 1 female, both immatui "Uniformly white-grey coloured." Remarks. — The distribution of this conspicuous and well-known species IS given in detail by Hansen (Ingolf Malacostraca, IV, 1020, p. 58). The present record extends its known range somewhat to the west but there remains a large gap towards the eastern record of 116° E. (Stuxberg). Further research may diminish or obliterate this gap, but is appears significant that the species was not found among the rich Alaskan and Bering sea collections of the U S Na- tional Museum (Caiman, Proc. U.S. Nat. :Mus.. XLI, 1912, p. 662). Locality.- -^Statlon Diastyiis spinulosa Heller. ^^ , ™ 43'J. "Off (Jockburn point. Dolphin and Union Strait, Northwest Territories, about lat. 68° 50' N., long. 11.5° \V., 13th September 1915. About 50 fathoms. Mud with pel)l)les. no alga»." 1 female (broken). is verv fraementarv. but. in Mud with pet)l)les. no alga>." 1 Remarks.— The speeimen is very fragmentary, but, in spite of the presence, on the surviving portions of the carai)ace, of more numerous spimiles than are iLsually attributed to this species, there can be little doubt as to its 'fientification. The species has not been recorded west of 74° 20' W., or east of Ho is lid. ^x^ .^,X^. Part A: Part ]»• Part C- Report of the Canadian Arctic Expedition, 1913-18. Volume I: Scneral Introduction. Narratlvr, Etc. Part A: Northern Party, 1013-18. Part B: Southern Party, 1813-16. IJy Rudolph Martin Andoraon. (/» prtporalian). Volume II: .Mammals and Birds. P»rJ m: UvT'""!?- "y R"'1"'P'' ""'tin VndL.r*,n. (In pr>-piration). Part B: Birds. Uy R. M. Ander.son and P. A. Tavorner. (U preparation). Volume III: Insects. Introduction. By C. Gordon Hen itt. (In prrsm Collomhol.-i. By JuitusW. Kolsoni. (Iami,!\ Nouroptcrnid Insocta. By Nathan Hiinki. (hswd). J art D: Mallophana and .Vnoplura. By A. W. Maker f I F IVrri^ nnH f ■ JV i- v .. ii Vr j. Part K. C.ileoptora. By I. .\ . .Swaine II r- |',i i p' \y I'J ' "?,'l I n «J, ' ^"/''•"i, f/«"rf). Part F: Ilomiptora. By E. P. Van DuzA. ( w/) ' ' ^™'" "'"' "'■ '^^ '^''erman, ,Ir. (hsueJ). "and k'^PoZ'S ""f/':!,"."' ''""" "^ '''•''•■ "• ^^■-«»''-vray, Charles T. Bruo,, F. W. L. Sladen. ^"\ W]'.'.'''"' ^'"''' ""^ ^'y'"P°J» «y J- H. Emorton, Nathan Banks, and Ralph V. ChamborWn. Part I: Lcpidoptpra. By Arthur Gihson. (hmej). Part. I: Orthoptfrn. By V.. M. Walker. (Is.,,.,!). Part K: General Observations on Insect L.fe in the Arctic. By Frits Johansen. (/, prep^jraUon). Volume IV: Rotany. Part A- Freshwater Alcae and FrcshwaKT Diatonis. By C;harle» W Lowe Part B- .Marine .\lKac By F. Collins. (/„ pr,,,:,r,,ion} ' Jart(^: lunei. By John Doarncss. (In prrpsrafi'm). Part n: I.whens. By rj. K. .Morrill. (In pn ,„r„(ion). Part £: Mosses. By K. S. Williams. (In prc.-.i). Volume V: Botany. pill n- ^IZ"".'! vH'^"*' T' '^'''?'- ^y •'■'""'^ ^'- ^'•'™>"' -'"'l The... Holm. Part B. General Notes on Arctic V e^etation. By Frits Johan.son. (In preparulwn]: Volume VI: Fishes, Tunicates, VAc. Part A: Fishes. By F. Johansen. (In prrprtrnlior) I art B: Ascidians, etc. By A. G. llunLsman. (In pnparntinn). Volume VII: Crustarea. Decapod rnisla.vans. By Mary.,'. liathhun. (7.-.,,,. I \„.,„.t ;> ( umarea. By \\ . I . Cahrian. (/» ,i,-. ^si Isopmla. By Mi-s P. I,. Boon" (ht "■;--■} : \i..pl,ipo,la. By riar-.n,-.. |{. Sho,'.,„ak.T. ■(/.„,,/ S.plntdnr 7, ;.')V Pycno^'onida. I.eon J. Cilc. (!„pr..^^.), ' ■■ Kuphyllopod.i. By F. Johan- n. (In pn p„mi:„n) . < lailocTa. By Chancry Jiiday. [hsu-J Jun. '•-., U)^") Ostra...da. By li. W. Shar],,.. (In pr, ,„.r.,!„m): (In preparation). (In prepnralion). irifi). . Uilfl). "). Part A: Part B: Parte: Part n Part !•:: Part F: Partfi; Part H: P irt 1 I'.art.I. Fr,-hwat,.rrop,.p„:la By C. Dwiitiit Marsh. (/..„,,; \ ,,r,l ; Part K: Mar,n.(^,p,.poda. By A. Will, v. (Is„.d.l,w ■;;*•.,' lartL: Pira^iiic Copepo.la. liy riiarl.s B. Wil..on. (I^.;v,l iu.p^^lH V Part M: Cirnpcdia. By II. A. I'iM.ry. (/„ pr, pa-nlu.„) . ' „ , , Volume VIII: .Mollusks, Kriiinoderms, C'oeii-nteratco, Etc. 1 art A' Mollusks. Recent .and Pleistocene. Bv U la. H Dall f/.-i-',. /) Pari £; "^^^X^rl^'z:^^. ci;^,^: ^ji:::^^' " ■ ^- ^''"^''•' '"■ "-''-^"->- Part ¥.: Rotatoria. By If. K. IlarnnK. (In p„„„n,lmn). Pnrl n V''-'"'^'"='"'"-, '!-^' •^- ^'- "u'lfsni^in. ^'in pr,p,r„lum). P^lSf; iVi""^"" and Alcyonaria. By A. F. V.rrill. ,/„ ,,r.,,,,). Part H. MedMsiie and Ctcn..pl,oni. By II. B. liigolow. (hjunl). Part I: Hydroids. By .McLean Frascr. (/-.!"■;'>'><'*». By Frank Smith an■«.•.;). lartK: Acanthocophal.a. By H. J. Van Cleave. >Is<,kJ) p"' ?■■ .V'^S-^t™'"- ,Ry ^■■ A. Cobb. ,7,1 pr,p.:r.,i,„n:. p!!:^l t'Tm"':'*"''iV'"'.'9;"""'n'- I*yA. R Cooper. (In pr.,,). Parti: Turlielluri,!. By A. Il.a^soll. (In pnp.ir.itnni. I'art .r dordiaeea. Part K: N'emertini. Part 1.: Sporozoa. By J, W. Mnvor. (In prepnrrtinn). lart.M: I'oraminifera. By J. .\. Cushman. U^'Ui'J). Volume X: Plankton, Ilydrosraphy, Tides. Et«. Part A: Pliitikton. By Albert Mann. (/, pr. p.,r.,l..,;) V . H' -1^^™'- P'^'toms. By L. W. B ailev. (In nr, „,.„,,■„,) PAri n- H^H *^"'''^"'""";'' «"'' Results. By W. Beir Dawson.' (In pre,,) fart U: Hydrosrapny. (In vreparal.on). ''