WS Cal v.17 yea REPORT ® CANADIAN ARCTIC EXPEDITION 1913-18 VOLUME VII: CRUSTACEA PART E: AMPHIPODS By CLARENCE R, SHOEMAKER OTTAWA THOMAS MULVEY PRINTER TO THE KING’S MOST EXCELLENT MAJESTY s 1920 3 1924 074 095 369 Report of the Gud eke Hepeainen, 1913-18. VOLUME VII: CRUSTACEA 1 —e Part A: DECAPOD CRUSTACEANS. By Mary J. Rathbun....... (Issued August 18, 1919). , Part B: SCHIZOPOD CRUSTACEANS. By Waldo L. Schmitt. eee September 22, 1919). Part C: CUMACEA. By We Te Calmaticn ai.3.00t.acne conics suiegee eine ee naaeas (In press). Part D? ISOPODA.. By Mise: Pi DeBoones.as 0 dase vrstianad wae ae emai emadia neste (In press). - Part E: AMPHIPODA. By Clarence R. Shoemaker...... oka eel eee Weed (In press), Part: F: PYCNOGONIDA., Leon: J. Cole; ce sscecacesnwe sehen racer eaune eeawes (In press). Part G: EUPHYLLOPODA. By F. Johansen.......................00005 (In preparation). ‘Part H: CLADOCERA. By Chancey Juday........................-(Zssued June 28, 1920). Part I: OSTRACODA. By R. W. Sharpe................... rey we preparation). Part J: FRESHWATER COPEPODA. By C. Dwight Marsh...... (Issued April 21, 1920). Part K: MARINE COPEPODA. By A. Willey....5...........25. 1. (Issued June 25, 1920). Part L: PARASITIC COPEPODA. By Charles B. Wilson ee et ee (In press). Part M: CIRRIPEDIA. By H. A. Pilsbry............ call gets Pains >. (In preparation). REPORT OF THE CANADIAN ARCTIC EXPEDITION 1913-18 VOLUME VII: CRUSTACEA PART E: AMPHIPODS By CLARENCE R. SHOEMAKER OTTAWA THOMAS MULVEY PRINTER TO THE KING’S MOST EXCELLENT MAJESTY 1920 . Vol. vii—67920—1 Issued Sept. 7th, 1920 Cornell University The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924074095369 The Amphipods of the Canadian Arctic Expedition, 1913-18. By Cuiarence R. SHOEMAKER Division of Marine Invertebrates, U. 8. National Museum The marine and freshwater amphipods collected by the naturalist of the southern party of the Canadian Arctic Expedition, Mr. Frits Johansen, are for the most part well-known arctic forms, but one, a species of Synurella, is new to science, this genus now appearing for the first time in American waters. Katius obesus was known from the Atlantic only on the strength of two specimens, until thirty-five were taken off the southwestern coast of Greenland my et Tjalfe Expedition in 1908-9; it appears now for the first time in the acific. The known ranges of several species have been greatly extended by the records in the collection under consideration; the details will be given under the. species involved. The collection contains fifty-three species included in forty-one genera which are distributed among eighteen families; the family Lysianasside, as would be expected in an arctic collection, is represented by the greatest number of genera, species, and individuals. An appendix has been added consisting of data based upon specimens from the Neptune and other Canadian expeditions. The color notes given under some of the species are based upon colored sketches made by Mr. Frits Johansen. The color nomenclature is based upon Ridgway’s ‘‘Color Standards and Nomenclature.” Order AMPHIPODA. Sup-onDER GAMMARIDEA. Family LYSIANASSID. 1. Anonyx nugax (Phipps). 1774. Cancer nugax Pures, Voy. North Pole, p. 192, pl. 12, f. 2. 1906. Anonyx nugax +A. lagena STEBBING, Tierreich, Amph. I, p. 54, and synonymy. 1911. Anos nugax eee Crust. Malacost., Campagne Arctique de 1907, du Duc rieans. 1913. Anonyx eunte SrepHEensEN, Conspectus Crust. et Pycnog. Groenl., p. 115. Station 29f: 70° 13’ N., 140° 50’ W., April 4, 1914, fests stomach of Phoca hispida Schreber, water depth about 30 fathoms; 6 specimens. Station 43a: Dolphin and Union strait (off Cockburn point), Northwest Territories, September 13, 1915, 50 fathoms, mud with pebbles, but no alge; 2 specimens. Station 46e: Dolphin and Union strait (off Bernard harbour), Northwest Territories, February 16, 1916, 6 fathoms; 300 specimens. Station 46g: Dolphin and Union strait (Bernard harbour), Northwest Territories, May 4, 1916; from Eskimos; 7 specimens. Distribution.—This species is very widely distributed, being found through- out the Arctic, North Atlantic, and North Pacific oceans. 2. Hippomedon holbolli (Kroyer). 1846. Anonyx holbélli Kroyer, Naturh. Tidsskr., ser. 2, vol. 2, p. 8, 38. 1906. Hippomedon holbélli Stessine, Tierreich, Amph. 3 p. 58, and synonyiny 1911. Hippomedon holbélli Sraprers, Crust. Malacost., Campagne Arctique de 1907, du Du d’Orléans, p. 6. Vol. vii—67920—1} 4m Canadian Arctic Expedition, 1913-18 Station 29f: 70° 13’ N., 140° 50’ W., April 4, 1914. From stomach of Phoca hispida Schreber; water depth about 30 fathoms; 30 specimens. Distribution.—Arctic ocean. 3. Onisimus botkini Birula. 1897. Onesimus botkint Brruta, Annuaire du Musée Zoologique de l’Acad. Imp. des Sciences de St. Pétersbourg, vol. II, 1897, p. 105. 1909. Onisimus botkini BrUGcEN, Mém. de l’Acad. Imp. des Sciences de St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 7, pl. I, f. 20-25. Station 27c: Lagoon-bay at Collinson point, Alaska, September 15, 1913, 0-1 foot water; 1 specimen. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 7 specimens. Station 28r: Bay at Collinson Point, Alaska, July 24, 1914; from stomach of Cottus quadricornis L., 3 fragments. Station 30c: Demarcation point, Alaska, May 10, 1914, 3 fathoms, sandy mud; 200 specimens. Figure 1. Onisimus botkini Birula 7. 1 Head and antennae. 2 Maxilla 1. 3 Mandible. 4 2d and 3d abdominal segments and urosome. 4 Telson, and 2d and 3d uropods. The specimens examined by Birula and by von der Briiggen all came from shallow water in the Kara sea, so it is very interesting to see these very fine specimens from Alaska. As these specimens differ in a few minor details from those collected in the Kara sea, I here add a brief description and a few figures. 5 5B Amphipods Figure 2. Onisimus botkini Birula @. 1 Peraeopod 2. 2 Gnathopod 2. 3 Gnathopod 1. 4 Peraeopod 5. 65 Canadian Arct:c Expedition, 1913-18 Head; lateral lobes narrowly rounded. Eyes; pear-shaped, red. Antenna 1; 1st joint about twice as long as 2nd and 8rd combined, slightly produced at the upper, inside, anterior edge, and provided on the upper, inside, posterior end with afew plumose seta, flagellum in ¢, 24 to 30 joints, in ¢, 14 to 18 joints, accessory flagellum, 5-7 joints, of which the first joint is about as long as all the rest combined. Antenna 2 not much longer than 1, ultimate joint slightly shorter than penultimate, flagellum in #, 30 to 38 joints, in ¢, 18 to 23 joints. Side-plate 1 expanded below, the lower anterior corner produced and broadly rounded, the lower edge nearly straight, a slight notch bearing a minute seta at lower posterior corner. Side-plates 2 and 3 with the sides nearly parallel, slightly wider below, the lower edge nearly straight. Side-plate 4 deeply and broadly emarginate behind, the lower part wide, and the lower edge nearly straight. Gnathopod 1, 6th joint about one-third longer than 5th with front edge slightly convex and back edge slightly concave, palm oblique and provided throughout its entire length with a single row of fine, sharp teeth and several spines, dactyl curved, with a single small tooth or spine in the centre of the inside edge, back of this tooth a row of very fine serrations, 4th and 5th joints provided on their under surface with mats of fine sete. Gnathopod 2 as in O. edwardsii or O. plautus, except that 5th and 6th joints are much more setose. The peraeopods are rather short and stout. Third abdominal segment produced at the lower posterior corner into a small rounded lobe which varies much in size. Telson a little longer than wide, sides convex, posterior border very slightly emarginate and bearing two minute sete. The largest specimens measure about 19 mm. 4. Onisimus brevicaudatus Hansen. 1886. Onisimus brevicaudatus Hansen, Dijmphna-Togtets Ubd., p. 216, pl. 21, f. 7-7e. 1906. Onisimus brevicaudatus SteBBiNG, Tierreich, Amph. I, p. 27, and synonymy. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, from stomach of. Phoca hispida Schreber. Water depth about 30 fathoms. 6 specimens. The specimens which Hansen described came from the Kara sea. 5. Onisimus plautus (Kroyer). 1845. Anonyz plautus Kroyer, Naturh. Tidsskr., ser. 2, vol. I, p. 629. 1906. Onisimus plautus SteBBinG, Tierreich, Amph. I, p. 26, and synonymy. 1911. Onisimus plautus StappERs, Crust. Malacost., Campagne Arctique de 1907, du Duc d’Orleans, p. 16. Station 46c: Dolphin and Union strait, Northwest Territories (off Bernard harbour), pelagic, over 38 feet water; February 19, 1916; 3 specimens. Distribution.—Arctie ocean, North Atlantic, and North sea, Skagerrak (Bohuslan). 6. Orchomenella groenlandica (Hansen). 1887. Anonyzx groenlandicus Hansen, Vid. Meddel., ser. 4, vol. 9, p. 72, pl. 2, f. 5-5g. 1906. Orchomenella groenlandica STEBBING, Tierreich, Amph. I, p. 83, and synonymy. 1913. Orchomenella groenlandica STEPHENSEN, Meddel. om Gr¢nland, vol. XXII, p. 128. Station 41: Bernard harbour, Northwest Territories (outer harbour), July 20, 1915, 5 fathoms, sandy mud with alge; 1 specimen. Distribution.—Arctic ocean, East Greenland, Finland. Amphipods 78 7. Orchomenella minuta (Kroyer). 1846. Anonyx minutus Kroyer, Naturh. Tidsskr., ser. 2, vol. 2, p. 23. 1906. Orchomenella minuta SteBBine, Tierreich, Amph. I, p. 82, and synonymy. 1909. eee ene Briicen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, 0. p. 13. 1916. Orchomenella minuta SrepHEensEN, Meddel. om Grégnland, vol. LIII, p. 285. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms of water; 2 specimens. : Station 46c: Dolphin and Union strait, Northwest Territories, February 19, 1916, pelagic, over 38 feet water (off Bernard harbour); 1 specimen. Distribution.—Arctic Ocean, North Atlantic, North Sea, Greenland. 8. Pseudalibrotus glacialis G. O. Sars. 1900. eee rene geen G. O. Sars, in Nansen, Norwegian North Polar Exp., vol. 1, No. , Pp. 34, pl. 0. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 3 specimens. Station 57a: Cape Smyth (point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom of water; 1 specimen. The specimens described by Sars were obtained north of Franz Josef land in 1894. The present specimens, coming from Alaska, indicate a wide distribu- tion for the species. 9. Pseudalibrotus litoralis (Kréyer). 1845. Anonyzx litoralis Kroyer, Naturh. Tidsskr., ser. 2, vol]. I, p. 621. 1906. Pseudalibrotus litoralis Sreppine, Tierreich, Amph. I, p. 33. 1911. Pseudalibrotus litoralis Srappers, Crust. Malacost., Campagne Arctique de 1907 du Duc d’Orleans, p. 14. Station 27h: Lagoon-bay at Collinson point, Alaska, September 18, 1913, 0-1 foot water; 1 specimen. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 10 specimens. Stations 37r, u: Bernard harbour, Northwest Territories, October 16-20, 1914, pelagic, over 1 fathom of water; 37 specimens. Station 40m: Bernard harbour, Northwest Territories, June 25, 1915, from stomach of Xema sabini (J. Sabine); 2 specimens. Station 41g: Bernard harbour, Northwest Territories (outer harbour), August 1, 1915, surface; 2 specimens. Station 4lu: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 44 specimens. Station 42h: Bay at Bernard harbour, Northwest Territories, September 22, 1915, beach water; 12 specimens. Station 46g: Dolphin and Union strait (Bernard harbour), Northwest Territories, May 4, 1916, from Eskimos; 20 specimens. Station 6la: South of Armstrong point, Victoria island, Prince of Wales strait, Northwest Territories, October, 1915, J. Hadley collector; 200 specimens. Distribution.—A very abundant species found throughout the Arctic ocean. 10. Pseudalibrotus nanseni G. O. Sars. 1900. Pseudalibrotus nanseni G. O. Sars, in Nansen, Norwegian North Polar Exp., vol. I’ No. 5, p. 26, pl. 4,5. Station 57a: Cape Smyth (point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom of water; 1 specimen. The specimens described by Sars were collected by the Norwegian North Polar Expedition in 1894 and 1896 north of the New Siberian islands, and farther to 8E Canadian Arctic Expedition, 1913-18 the west. The discovery of this specimen at point Barrow extends the range o this species considerably to the east. Juvenile specimens of some form of Pseudalibrotus were obtained at Station 40v, 50b (both in Dolphin and Union strait), and 56a, (Harrison bay, Alaska), but any specific identification of such specimens would be very doubtful. 11. Socarnes bidenticulatus (Bate). 1835. Gammarus nugax J. C. Ross, in Ross’s Second voyage, Appendix, p. 87. 1906. Socarnes bidenticulatus SrepBine, Tierreich, Amph. I, p. 56, and synonymy. 1909. Boonies budeniicuans Briiccen, Mém. Acad. Imp. Sci. de St. Pétersbourg, sér. 8, vol 18, o. 16, p. 12. 1912. Socarnes bidenticulatus STEPHENSEN, Report on the Malacost., Pyenogonida, etc., collect- ed by the Danmark Exped. to Northeast Greenland, p. 527. 1913. Socarnes bidenticulatus StppHENSEN, Account Crust. etc. collected by Dr. V. Nordmann in Summer 1911 from West Greenland, p. 65. Station 42u: Bernard harbour, Northwest Territories, October 22, 1915, from stomach of Erignathus barbatus (Erxleben); 5 specimens. Distribution.—Arctic ocean, east and west coast of Greenland. 12. Tmetonyx gulosus (Kroyer). 1845. Anonyzx gulosus Kroyer, Naturh. Tidsskr., ser. 2, vol. I, p. 611. 1906. Tmetonyx cicada SteBsina, Tierreich, Amph. I, p. 74, and synonymy. 1909. Tmetonyz cicada Briccen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 13. 1911. Tmetonyzr gulosus Stappers, Crust. Malacost., Campagne Arctique de 1907 du Duc d’Orléans, p. 11, and synonymy. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, from stomach of Phoca hispida Schreber, over about 30 fathoms; 4 specimens. Station 42uw: Bernard harbour, Northwest Territories, October 22, 1915, from stomach of Erignathus barbatus (Erxleben); 1 specimen. Station 48a: Dolphin and Union strait (off Cockburn point), Northwest Territories, September 13, 1915, over about 50 fathoms of water, mud with pebbles, but no alge; 2 specimens. Station 62a: Liddon gulf, Melville island, Northwest Territories, July, 1916, A. Castel collector; 2 specimens. Distribution.—Arctic ocean, north Atlantic, North sea, France. 13. Katius obesus Chevreux. 1905. Katius obesus CHEVREUX, Description d’un Amphipode (Katius obesus nov. gen. et sp.) Bull. Mus. Océanogr. Monaco, No. 35, 1915 (with figs). 1906. Katius obesus TaTTERSALL, Fisheries, Ireland, Sci. Invest. 1905, IV. 1906, p. 29. 1912. Katius obesus STEPHENSEN, Vidensk. Meddel. fra den Naturh. Foren., Bd. 64, p. 89. Station 8a: Lat. 55° 13’ N., long. 140° 21’ W., June 26, 1913, surface; 1 specimen. This species is represented by a single badly preserved specimen which differs only slightly from Chevreux’s figure. His specimen was 12 mm. long, while those obtained on the Tjalfe Expedition were 25 mm. The present speci- men measures about 5 mm. which indicate that it is quite immature. The presence of a double row of calceoli on each antenna would seem to indicate a male. Chevreux’s specimen apparently did not have the calceoli, but he was not certain that it was a male. The eyes in our specimen are not present, as nearly all of the internal organs have disappeared, leaving the interior entirely empty. The 3rd uropods have the rami much narrower and the inner ramus proportionately shorter than in Chevreux’s figure. The type specimen was obtained off the Azores, in water 0-3000 meters depth; the specimen obtained by the Helga came from the west coast of Ireland, 1,200 fathoms, and the speci- mens collected by the Tjalfe Expedition were from the southern coast of Green- Amphipods' 98 land, in water 500-2000 meters depth. The discovery of this specimen in the North Pacific upon the surface greatly extends its range, both geographically and bathymetrically. Family STEGOCEPHALID. 14, Stegocephalus ampulla (Phipps). 1774. Cancer ampulla Putprs, Voy. North Pole, p. 191, pl. 12, f. 3. 1906. Phippsia ampulla Stessine, Tierreich, Amph. I, p. 89, and synonymy. 1909. Stegocephalus ampulla Briicaern, Mém. Acad. Imp. Sei. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 14; pl. I, fig. 1; pl. III, figs. 11-19. Station 42u: Bernard harbour, Northwest Territories, October 22, 1915, from stomach of Erignathus barbatus (Erxleben); 1 specimen. Distribution.—Arctic ocean. 15. Stegocephalus inflatus Kroyer. 1842. Stegocephalus inflatus Kroyer, Naturh. Tidsskr., vol. 4, p. 150. 1906. Stegocephalus inflatus Stespine, Tierreich, Amph. I, p. 91, and synonymy. 1909. se tee ee Brtacen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, o. 16, p. 14. 1911. Stegocephalus inflatus Srapprrs, Crust. Malacost., Campagne Arctique de 1907 du Duc d’Orléans, p. 28. 1912. Stegocephalus inflatus StEpHENSEN, Vidensk. Meddel. fra den Naturh. Foren., Bd. 64, 89 p. 89. 1912. Stegocephalus inflatus StppHEeNnsEeN, Meddel. om Grénland, vol XLV, p. 532. 1913. Stegocephalus inflatus StsPpHENSEN, Meddel. om Gr¢nland, vol. LI, p. 66. 1916. Stegocephalus inflatus StePHENSEN, Meddel. om Grgniand, vol. LIII, p. 286. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, from stomach of Phoca hispida Schreber, about 30 fathoms; 6 specimens. Station 42u: Bernard harbour, Northwest Territories, October 22, 1915, from stomach of Erignathus barbatus (Erxleben); 10 specimens. Station 43a: Dolphin and Union strait (off Cockburn point), Northwest Territories, September 13, 1915. 100 meters; sandy mud with pebbles but no algae; 1 specimen. Distribution.—Arctic Ocean; north Atlantic (west-Norway, Shetland Isles, Nova Scotia, Labrador, Massachusetts); north Pacific (Japan, sea of Okhotsk); Bering sea. Family AMPELISCIDA. 16. Ampelisca eschrichtii Kroyer. 1842. Ampelisca eschrichtiti Kroyer, Naturh. Tidsskr., vol. 4, p. 155. 1906. Ampelisca eschrichtii Srepsine, Tierreich, Amph. I, p. 100, and synonymy. 1906. Ampelisca eschrichtti CoEvREUX, Amph. Exped. Antarct. franc., p. 20. 1909. Ampelisca eschrichttt BrUaceN, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, “No. 16, p. 16. : 1911. Ampelisca eschrichtii SraprErs, Crust. Malacost. Campagne Arctique de 1907 du Duc d’Orléans, p. 19, pl. 1, fig. 1,9, 14-16. 1917.. Ampelisca eschrichttti Cu1tton, Journal of Zool. Research, May, 1917, vol. II, No. 2, p. 87. Station 43a: Dolphin and Union strait (off Cockburn point), Northwest Territories, September 13, 1915; about 50 fathoms, mud with pebbles but no alge; 1 specimen. Distribution.—Arctic ocean, north Atlantic, North and South Pacific, Bay of Biscoe, Anvers Island (about Lat. 64° 8. Long. 64° W.) 17. Haploops tubicola Lilljeborg. 1855. Haploops tubicola LILLJEBORG, Ofv. Ak. Férh., vol. 12, p. 135, 136. 1906. Haploops tubicola SteBsiNG, Tierreich, Amph. I, p. 117, and synonymy. 1908. Haploops tubicola Homes, Proc. U.S.N.M., vol. XXXV, p. 518. 67920—2 10 8 Canadian Arctic Expedition, 1913-18 1909. Honieoni tubicola BRUacEN, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 167 p. 1913. Boies tubicola StspHENsEN, Meddel. om Gr¢nland, vol. LI, p. 67. 1916. Haploops tubicola SrspHenseN, Meddel. om Gr¢nland, vol. LILI, p. 294. Station 436: Dolphin and Union strait (off Stapylton bay), Northwest Territories, September 14, 1915, 25-30 fathoms, sandy mud with pebbles but no alge; 1 specimen. Distribution.—Arctic ocean, North Atlantic, North Pacific. Family HAUSTORIID. 18. Pontoporeia affinis Lindstrém. 1855. Pontoporeia affinis LinpstroM, Ofv. Ak. Férh., vol. 12, p. 63. 1906. Pontoporeia affinis SteBBine, Tierreich, Amph. I, p. 138, ‘and synonymy 1909. Pontoporeia affinis Briigcen, Mém. ‘Acad. Imp. Sei. St. Pétersbourg, sér. s, vol. 18, No. 16, p. 21. Station 270: Collinson point, Alaska, September 20, 1913, pelagic, over about 1 foot of water (9-inch ice); 2 specimens. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 5 specimens. Distribution.—Fresh-water lakes (Norway, Sweden, Russia, North America); Baltic, Kattegat, Kara sea, North Atlantic (France). 19. Pontoporeia femorata Kroyer. 1842. Pontoporeia femorata Kroyer, Naturh. Tidsskr., vol. 4, p. 153. 1906. Pontoporeia femorata SteBBinG, Tierreich, Amph. I, p. 128, and synonymy. 1909. Pontoporeia femorata BruiccEn, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 20. Station 377: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over about 2 fathoms of water; 1 specimen. Station 41u: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 2 specimens. Distribution.—Arctic ocean, North Atlantic, Baltic. 20. Priscillina armata (Boeck). 1861. Pontoporeia armata Borcx, Forh. Skand. Naturf., M¢de 8, p. 648. 1906. Priscillina armata SteBBING, Tierreich, Amph. I, p. 126, and synonymy. 1913. Priscilla armata STEPHENSEN, Meddel. om Gr¢nland, vol. XXII, p. 129. Station 486: Banks peninsula, Bathurst inlet, Northwest Territories, May 18, 1916, from stomach of Gadus sp.; 1 specimen. Distribution.—Arctic ocean, North Atlantic, Greenland, West Norway? Family ACANTHONOTOZOMATIDA. 21. Acanthonotozoma inflatum (Kroyer). 1842. Acanthonotus inflatus Kroyer, Naturh. Tidsskr., vol. 4, p. 161. 1906. Acanthonotozoma inflatum STEBBING, Tierreich, Amph. is p. 219 and synonymy. 1909. Acanthonotozoma inflatum BriGcEN, Mém. Acad. Imp. ‘Sei. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 23. Station 28d: Collinson point, Alaska, October 18, 1913, about 1 fathom; 1 specimen. Station 28e: Collinson point, Alaska, October 21, 1913, pelagic, over about 1 fathom; 1 specimen. Distribution.—Arctic ocean, Greenland. Amphipods 115 Family OEDICEROTIDA. 22. Acanthostephia malmégreni (Goés). 1866. Amphitonotus malmgreni Gots, Ofv. Ak. Forh., vol. 22, p. 526, pl. 39, f. 17. 1906. Acanthostephia malmgreni Srussine, Tierreich, Amph. I, p. 254, and synonymy. 1909. Acanthostephia malmgreni Briccren, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 25. . Station 43): Dolphin and Union strait, Northwest Territories (off Stapylton bay), September 14, 1915, 25-30 fathoms; sandy mud with pebbles, but no algee; 1 specimen. Distribution.—Arctic ocean, Greenland. 23. Acanthostephia pulchra Miers. 1881. Acanthostephia pulchra Mimrs, Ann. Nat. Hist., ser. 5, vol. 7, p. 47, pl. 7, f. 1, 2. 1909. Acanthostephia pulchra Stepsine, Tierreich, Amph. I, p. 254, and synonymy. Station 25a: Off Cooper island (point Barrow), Alaska, pelagic, over 0-2 fathoms, August 27, 1913; 5 specimens. Station 27s: Collinson point, Alaska, October 3, 1913, about 3 fathoms; 1 specimen. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Salvelinus malma Walb; 13 specimens. Station 41c: Bernard harbour, Northwest Territories, July 28, 1915, about 5 fathoms, sandy mud with alge; 3 specimens. Station 41u: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 2 specimens. Station 59a: Off Cape Kellett, Banks island, Northwest Territories, Sep- tember 7, 1914, 5-6 fathoms, sand with alge; G. H. Wilkins, collector; 2 speci- mens. Color.—Entire animal light grayish vinaceous with the body segments each transversely barred with dark purple-drab, joints of peduncles of antennae transversely barred with dark purple-drab. Distribution.—Arctic ocean (Franz Josef land, Siberia). 24. Aceroides latipes (G. O. Sars). 1882. Halicreion latipes Sars, Forh. Selsk. Christian., nr. 18. p. 97, t. 4, f. 10. 1906. Aceroides batipes Stessine, Tierreich, Amph. I, p. 255, and synonymy. 1909. Aceroides latipes Briigcen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 24. Station 27s: Collinson point, Alaska, October 3, 1913, about 3 fathoms, mud with alge; 1 specimen. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 1 specimen. Distribution.—Arctic ocean, Greenland, Norway. 25. Arrhis phyllonyx (M. Sars). 1858. Leucothoé phyllonyx M. Sars, Forh. Selsk. Christian., p. 148. 1906. Arrhis phyllonyz Stespine, Tierreich, Amph. I, p. 248, and synonymy. 1909. Arrhis phyllonyx Briicaen, Mém. Acad. Imp. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 25. Station 43b: Dolphin and Union strait (off Stapylton bay), Northwest Territories, September 14, 1915, 25-30 fathoms, sandy mud with pebbles, but no alge; 1 specimen. Distribution.—Arctic ocean, North Atlantic, North sea, Greenland, Iceland, Norway. 67920—23 128 Canadian Arctic Expedition, 1913-18 26. Monoculodes longirostris (Goés). 1866. Oediceros longirostris Gots, Ofv. Ak. Férh., vol. 22, p. 526, pl. 39, f. 20. 1906. Monoculodes longirostris StepBinG, Tierreich, Amph. I, p. 260, and synonymy. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms water; 1 specimen. Distribution.—Arctic ocean (Spitzbergen, Finmark, Tromso), Kattegat. 27. Monoculodes schneideri G. O. Sars. 1895. Monoculodes schneidert Sars, Crust. Norway., vol. I, p. 692, pl. VI, f. 1. 1906. Monoculodes schneideri StepBinaG, Tierreich, Amph. I, p. 263. Station 57a: Cape Smyth (point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom water; 2 specimens. Distribution.—Arctic ocean (Troms6). One immature specimen of some form of Monoculodes was obtained at station 41n (Bernard harbour). 28. Monoculopsis longicornis (Boeck). 1871. Monoculodes longicornis Borck, Forh. Selsk. Christian., 1870, p. 165. 1906. Monoculopsis longicornis StEBBING, Tierreich, Amph., I, p. 258, and synonymy. 1912. Monoculopsis longicornis STEPHENSEN, Meddel. om Gr¢gnland, vol. XLV, p. 595. Station 41n: Bernard harbour, Northwest’ Territories, (inner harbour), August 9, 1915, surface; 2 specimens. Distribution.—Arctic ocean, North Atlantic, North sea, Greenland. 29. Paroediceros lynceus (M. Sars). 1858. Oecdiceros lynceus Sars, Forh. Selsk. Christian., p. 143. 1906. Paroediceros lynceus STEBBING, Tierreich, Amph. I, p. 246, and synonymy. 1909. iar aden ee Briiccen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, o. 16, p. 23. 1911. Paroediceros lynceus StarrEers, Crust. Malacost. Campagne Arctique de 1907, du Duc d’Orléans, p. 32. 1912. Paroediceros lynceus STEPHENSEN, Meddel. om Grgnland, vol. XLV, p. 532. 1913. Paroediceros lynceus STEPHENSEN, Meddel. om Gr¢nland, vol. LI, p. 66. 1916. Paroediceros lynceus STEPHENSEN, Meddel. om Gr@nland, vol. LIII, p. 287. Station 27s: Collinson point, Alaska, October 3, 1913, 3 fathoms, mud with alge; 1 specimen. Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb; 2 specimens. Distribution.—Arctic ocean (Greenland, Iceland, Spitzbergen, Murman ' coast, Siberian Polar sea, Labrador, Finland). Family CALLIOPIID. 30. Apherusa glacialis (H. J. Hansen). 1887. Apherusa glacialis Hansen, Vid. Meddel, ser. 4, vol. 9, p. 187, pl. 5, f. 6-6c. 1906. Apherusa glacialis StepBineG, Tierreich, Amph. I, p. 307, and synonymy. 1909. daigyss glacialis Briacen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 28. 1911. Apherusa glacialis Stappers, Crust. Malacost., Campagne Arctique de 1907 du Duc d’Orléans, p. 61. 1912. ane la a SrEPHENSEN, Vidensk. Meddel. fra den Naturh. Foren., Kgbenhavn, Bd. 64, p. 96. 1912. Apherusa glacialis STEPHENSEN, Meddel. om Grgnland, vol. XLV, p. 537. 1916. Apherusa glacialis StrepHENSEN, Meddel. om Grgnland, vol. LIII, p. 289. Station 25), c: Off Cooper island, (point Barrow), Alaska, August 27, 1913, surface; 1 specimen. Amphipods 13 E Station 41r: Beach at Bernard harbour, Northwest Territories, August 14, 1915; 2 specimens. Station 56a: Harrison bay, Alaska, August: 6, 1916, surface; 1 specimen. Station 57a: Cape Smyth (point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom of water; 3 specimens. : Distribution.—Arctic ocean, Greenland. 31. Apherusa megalops (Buchholz). 1874. Paramphithoé megalops Bucunoxz, Zweite Deutsche Nordpolarfahrt, vol. 2, p. 369, pl. 12. 1906. Halirages megalops Stessine, Tierreich, Amph. I, p. 293, and synonymy. 1912. Amphithopsis megalops SrepHensEN, Meddel. om Gr¢nland, vol. XLV, p. 584. 1913. Amphithopsis megalops SrepHenseNn, Meddel. om Gr¢nland, vol. XXII, p. 176. 1916. Amphithopsis megalops SrePpHENSEN, Meddel. om Gr¢nland, vol. LIII, p. 290. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms of water; 2 specimens. Station 41: Bernard harbour, Northwest Territories (outer harbour), July 20, 1915, 5 fathoms; 1 specimen. This is not the Apherusa megalops described by G. O. Sars in 1882 from Norway, but the species described by R. BucnHouz in 1874 as Paramphithoé megalops from Northeast Greenland. Heretofore this species has not been recorded outside of Greenland. 32. Calliopius leviusculus (Kroyer). 1838. Amphithoe leviuscula Kroyer, Danske Selsk. Afh., vol. 7, p. 281, pl. 3, f. 13 a-h. 1906. Calliopius leviusculus StesBine, Tierreich, Amph. I, p. 296, and synonymy. 1912. Calliopius leviusculus SrepHenseN, Meddel. om Gr¢gniand, vol. XLV, p. 597, 617. 1913. Calliopius leviusculus SrepHENSEN, Meddel. om Gr¢gnland, vol. XXII, p. 179. Station 7a: Lat. 55° 42’ N., long. 136° 20’ W., June 25, 1913, surface (among floating alge); 3 specimens. Station 13a, b, c: Lat. 54° 30’ N., long. 159° 42’ W., July 1, 1913, surface; 1 specimen. Station 13g, h: Lat. 54° 30’ N., long. 159° 42’ W., July 1, 1913, surface; 2 specimens. Station 14: Lat. 54° 23’ N., long. 164° 45’ W., July 2, 1913, surface; 1 specimen. Distribution.—Arctic ocean, North Atlantic, North sea, Greenland, Lab- rador, Norway, British Isles, North Pacific. 33. Calliopius rathkii (Zaddach). 1844. Amphitoe rathkit Zappacu, Synops. Crust. Pruss., p. 6. 1906. Calliopius rathkii Srepsine, Tierreich, Amph. I, p. 296, and synonymy. 1912. Calliopius rathkei SrspHensEN, Meddel. om Gr¢gnland, vol. XLV, p. 597. 1913. Calliopius rathket SrspHENSEN, Meddel. om Gr¢nland, vol. XXII, p. 180, 1916. Calliopius rathkei StepHENSEN, Meddel. om Gr¢nland, vol. LIT, p. 292. Station 41s: Bernard harbour, Northwest Territories (inner harbour), August 24, 1915, surface; 1 specimen. ; Distribution.—Arctic ocean, North Atlantic, North sea, and Skagerrak, Norway, France, Great Britain. 34. Halirages nilssoni Ohlin. 1895. Halirages nilssoni A. Ontin, Acta Univ. Lund., vol. 31, No. 6, p. 44, pl., f. 1-6. Station 41: Bernard harbour, Northwest Territories (outer harbour), July 20, 1915, 5 fathoms, sandy mud with alge; 3 specimens. ; This species was first obtained from Baffin bay in 1894 by the Peary Auxi- liary Expedition. The present specimens from Bernard harbour make the second record, and extend the range considerably to the west. 148 Canadian Expedition Arctic, 1913-18 Family ATYLID. 35. Atylus carinatus (Fabricius). 1793. Gammarus carinatus Fasricrus, Ent. Syst., vol. 2, p. 515. 1906. Atylus carinatus StepBine, Tierreich, Amph. I, p. 328, and synonymy. 1909. Atylus carinatus BRiiccen, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 32. 1912. Atylus carinatus SrepHENsEN, Meddel. om Grgnland, vol. XLV, p. 540, 605. 1913. Atylus carinatus SrepHEeNsEN, Meddel. om Grgnland, vol. XXII, p. 171. Station 200, c: Grantley harbour (port Clarence), Alaska, July 30, 1913, 2-3 fathoms, sandy mud with many alge; 5 specimens. Station 20g: Port Clarence, Alaska, August 4, 1913, 2-3 fathoms, mud with many alge, 2 specimens. Station 27r: Collinson point, Alaska, October 2, 1913, pelagic, over 1 fathom water; 3 specimens. Station 27s: Collinson point, Alaska, October 3, 1913, 3 fathoms, mud with alge; 5 specimens. Station 28d: Collinson point, Alaska, October 18, 1913, pelagic; 2 specimens. Station 28e: Collinson point, Alaska, October 21, 1913, pelagic, over 1 fathom water; 1 specimen. Station 28f: Collinson point, Alaska, October 25, 1913, 13 fathoms, sand with alge; 2 specimens. Station 40u: Bernard harbour, Northwest Territories, July 6-8, 1915, from stomach of Erignathus barbatus (Erxleben); 1 specimen. Station 41: Bernard harbour, Northwest Territories (outer harbour), July 20, 1915, 5 fathoms, sandy mud with many alge; 21 specimens. Color.—Entire animal tawny-olive with a sepia spot on the lower part of the body segments, carina marked in front with sepia, second joint of peduncle of the first and second antennae darker than the rest. Distribution.—Arctic ocean (widely distributed). Family EUSIRID. 36. Rhachotropis aculeata (Lepechin). 1780. Oniscus aculeata Lerecuin, Acta Ac. Petrop., 1778, p. 247, pl. 8, f. 1. 1906. Rhachotropis aculeata StEBBING, Tierreich, Amph. I, p. 348, and synonymy. 1909. Rhachotropis aculeata BRUccEN, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 34. 1916. Rhachotropis aculeata STEPHENSEN, Meddel. om Gr¢nland, vol. LIII, p. 292. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, from stomach of Phoca hispida (Schreber), 30 fathoms; 1 specimen. Distribution.—Arctic ocean (widely distributed, circumpolar). A fragment of some species of Rhachotropis was collected at station 28f, Collinson point, Alaska. 37. Rozinante fragilis (Goés). 1866. Paramphithoé fragilis Gos, Ofv. Ak. Forh., vol. 22, p. 524, pl. 39, f. 16. 1906. Rozinante fragilis Sressine, Tierreich, Amph. I, p. 354, and synonymy. 1909. Rozinante fragilis BRUcaeN, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 35. 1911. Rozinante fragilis Srappers, Crust. Malacost., Campagne Arctique de 1907, du Duc d’Orléans, p. 56, pl. III, f. 1-4. Station 27s: Collinson point, Alaska, October 3, 1913, 3 fathoms, mud with alge. (Bottom and pelagic); 2 specimens. Station 28e: Collinson point, Alaska, October 21, 1913, pelagic, over 1 fathom of water; 2 specimens. Distribution.—Arctic ccean (Greenland, Spitzbergen, Barents sea). Amphipod; 155 Family PONTOGENEIID. 38. Pontogeneia inermis (Kroyer). 1838. Amphithoe inermis Kroynr, Danske Selsk. Afh., vol. 7, p. 275, pl. 3, f. 11 a-g. 1838. Amphithoe crenulata Kroyer, ibid., p. 278, pl. 3, f. 12 a-g. 1906. Pontogeneia inermis StesBina, Tierreich, Amph. I, p. 359, and synonymy. 1912. Pontogeneia inermis StePpHENSEN, Meddel. om Gr¢niland, vol. XLV, p. 539, 606. 1913. Pontogeneia inermis Pearse, Proc. U.S.N.M., vol. 45, p. 573. 1913. Pontogeneia inermis StEPHENSEN, Meddel. om Grgnland, vol. XXII, p. 173. 1916. Pontogeneia inermis StePHENSEN, Meddel. om Gr¢nland, vol. LIII, p. 289. Station 377: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms water; 1 specimen. Distribution.—Arctic ccean, North Atlantic, North Pacific, North sea, Greenland, West Norway, Siberia. Figure 3. Rozinante fragilis (Goés). 1 Peraeopod 2. 2 Gnathopod 2. Family GAMMARID. 39. Gammaracanthus loricatus (Sabine). 4821 and 24. Gammarus loricatus E. Sapine, in W. E. Parry, J. Voy., Suppl., p. 53, pl. I, f. 7; 2, pled, to * 1906. Pleo kannst loricatus SreBBING, Tierreich, Amph. I, p. 508, and synonymy. 1909. Gammaracanthus loricatus Briccrn, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. Oey 18, No. 16, p. 35. 1912. Gammaracanthus loricatus SrsepHENSEN, Meddel.om Gr¢nland, vol. XLV, p. 503, 543, 589 1913. Gammaracanthus loricatus STEPHENSEN, Meddel. om Gr¢gnland, vol. XXII, p. 197. Station 28c: Collinson point, Alaska, October 14, 1913, sandy mud with scattered alge, 1 fathom; 1 specimen. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, water depth 30 fathoms, from stomach of Phoca hispida Schreber; 2 specimens. 165 Canadian Arctic Expedition, 1913-18 Station 280: Collinson point, Alaska, July 8, 1914, from stomach of Sal- velinus malma Walb.; 2 specimens. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms water; 4 specimens. Station 37r, wu: Bernard harbour, Northwest Territories, October 16-20, 1914, pelagic, over 1 fathom of water; 1 specimen. Station 40u: Bernard harbour, Northwest Territories, July 6-8, 1915, from stomach of Erignathus barbatus (Erxleben); 1 specimen. Station 41: Bernard harbour, Northwest Territories (outer harbour), July 20, 1915, sandy mud with many alge, 5 fathoms; 3 specimens. Distribution.—Arctic Ocean (Greenland, Spitzbergen, Franz Josef land, Nova Zembla, Siberia.) 40. Gammarus limnzus Smith. 1871. Gammarus lacustris 8. I. Smrru, Amer. J. Sci., ser. 3, vol. 2, p. 453. 1874. Gammarus limneus, 8. I. Smita, 7th Rept. U.S. Geol. Survey, p. 609; Rept. U.8. Fish Com. 1872-73, p. 651. 1874. Gammarus robustus S. I. Smiru, 7th Rept. U.S. Geol. Survey, p. 6 1907. Gammarus limneus A. L. WECKEL, Proc. U.8.N.M., vol. ski . 42, £.9. Station 28h: Warm creek, tributary to Sadlerochit river, about 25 miles inland from Camden bay, Alaska, November 6-7, 1913; 30 specimens. Station 40g: Bernard harbour, Northwest Territories, lake or creek, from stomach of Cristivomer namaycush Walb., June 28, 1915; 17 specimens. Station 40n!: Lake, inland at Bernard harbour, Northwest Territories, June 23, 1915, pelagic, over 4 meters of water, ice 2 meters; 11 specimens. Station 40n?: Pond at Bernard harbour, Northwest Territories, July 16, 1915, pelagic; 3 specimens. Station 427: Lake at Bernard harbour, Northwest Territories, October 2, 1915, from stomach of Salvelinus marstoni Garm.; 5 specimens. Station 42v: Lake at Bernard harbour, Northwest Territories, December, 1915, from stomach of Salvelinus marstont Garm.; 7 specimens. Station 50g: Lake at Bernard harbour, Northwest Territories, April, 1906, from stomach of Cristivomer namaycush Walb.; 4 specimens. Station 54h: Pond on north side of east end of Herschel island, Yukon Territory, August 1, 1916; 28 specimens. This Amphipod has been found throughout the northeastern and western parts of the United States, and these records now from Bernard harbour and Alaska indicate that it inhabits the fresh-waters of the United States, Canada, and Alaska. 41. Gammarus locusta (Linné). 1758. Cancer locusta Linn#&, Syst. Nat., ed. 10, p. 634. 1906. Gammarus locusta STEBBING, Tierreich, Amph. I, p. 476, and synonymy. 1909. on locusta Brion, Mém. Acad. Imp. Sei. St. ’Pétersbourg, sér. 8, vol. 18, No. 16, p. 35. 1911. Gammarus locusta Stappers, Crust. Malacost., Campagne Arctique de 1907 du Duc d’Orléans, p. 68. 1913. Gammarus locusta PEaRsE, Proc. U.S.N.M., vol. 45, p. 571. 1916. Gammarus locusta STEPHENSEN, Meddel. om Groubed, vol. LIT, p. 293. Station 200, c: Grantley harbour (port Clarence), Alaska, July 30, 1913, 2-3 fathoms, sandy mud with many alge; 2 specimens. Station 20h: Port Clarence, Alaska, August 4, 1913, 2-8 fathoms, surface, attached to floating alge; 3 specimens. Station 27a: Collinson point, Alaska, September 5, 1913, sandy mud with scattered alge, from stomach of Cottus quadricornis L.; 2 specimens. Station 27c: Lagoon-bay at Collinson point, Alaska, September 15, 1913, 0-1 foot water; 1 specimen. Amphipods 17 Station 27h: Lagoon-bay at Collinson point, Alaska, 0-1 foot water, Sep- tember 18, 1913; 15 specimens. Station 270: Collinson point, Alaska, September 20, 1913, pelagic, over 1 foot of water (9-inch ice); 1 specimen. Station 28¢: Collinson point, Alaska, October 14, 1913, 1 fathom, sandy mud with scattered alge; 35 specimens. Station 281: Beach at Collinson point, Alaska, June, 1914; 2 specimens. Station 280: Collinson point, Alaska, from stomach of Salvelinus malma Walb., July 8, 1914; 14 specimens. Station 28r: Bay at Collinson point, Alaska, July 24, 1914; from stomach of Cottus quadricornis L. 2 fragments. Station 37a: Bernard harbour, Northwest Territories, August 24, 1914, from stomach of Erignathus barbatus (Erxleben); 5 specimens. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms water; 1 specimen. Station 37r, wu: Bernard harbour, Northwest Territories, October 16-20, 1914, pelagic, over 1 fathom water; 6 specimens. Station 40d: Dolphin and Union strait (Bernard harbour), Northwest Territories, June 8, 1915. Pelagic over 9 fathoms; 1 specimen. Station 40h: Dolphin and Union strait (Bernard harbour), Northwest Territories, June 25, 1915, pelagic, over 23 fathoms water; 5 specimens. Station 40m: Bernard harbour, Northwest Territories, June 25, 1915, from stomach of Xema sabini (J. Sabine); 1 specimen. Station 40p: Bernard harbour, Northwest Territories, July 1, 1915, pelagic, in littoral region; 20 specimens. Station 40u: Bernard harbour, Northwest Territories, July 6-8, 1915, from stomach of Erignathus barbatus (Erxleben), F.; 4 specimens. Station 48b: Banks peninsula, Bathurst inlet, Northwest Territories, May 18, 1916, from stomach of Gadus sp.; 10 specimens. Station 50d: Young point, Northwest Territories (Dolphin and Union strait), July 21, 1916, among loose alge, in littoral region; 6 specimens. Color.—Entire animal maize yellow, eyes berlin blue, legs and antennae banded with light russet-vinaceous, each of the body segments with a dark, transverse dorsal band, the last two thoracic and the abdominal segments marked on their lower portions with scarlet. Distribution.—Arctic ocean, North Atlantic, North Pacific. Immature species of Gammarus were obtained at station 40v, 41g, (both Dolphin and Union strait), and 56a (Harrison Bay, Alaska). 42. Synurella johanseni, new species. Type specimen: Catalogue No. 1380; paratypes, Nos. 1381-3, Victoria Memorial Museum, Ottawa, Canada. ‘ Station 207: Pond in the tundra at Teller, Alaska, August 6, 1913; 21 specimens. ; Station 207: Brackish pond at Teller, Alaska, August 3, 1913; 1 specimen (juvenile). Description.—Body rather stout, not much compressed. Head with front edge broadly rounded. Eyes rather small, irregularly oval, composed of few elements, brownish black. : Pleon segments 1 and 2 with posterior lateral corners slightly produced; segment 3, with posterior lateral corners evenly rounded or with a very slight production of the lower posterior margin. Posterior edge of pleon segment 3 with shallow notch bearing a minute seta just above the lower margin. Antenna 1 is about half as long as the body; the joints of the peduncle becoming consecutively shorter; Ist joint much the stoutest; flagellum of about 67920—2 18 5 Canadian Arctic Expedition, 1918-18 12 joints; accessory flagellum 2-jointed, but not as long as the 1st joint of pri- mary. Antenna 2 with 4th joint of peduncle longest; flagellum 6-jointed, and about as ong as the 4th joint of peduncle. Side-plates 1-3 about as deep as their segments, with sides parallel and lower edges evenly rounded and provided with sete#. Side-plate 4 deepest, with upper half of posterior border rather deeply emarginate, and lower border and lower half of posterior border provided with sete. Figure 4. Synurella johansent, n. sp. 1 Head and antennae. 2 Accessory flagellum enlarged. 3 Maxilla 1. 4 Mazxilla 2. 5 Maxillipeds. 6 Lower lip. 7 Upper lip. §& Mandible. 9 Seta of molar enlarged. Mandible; 8rd joint of palp a little shorter than 2nd, armed at apex with 4 or 5 Icng bristles and at the upper part of the front edge with a row of fine bristles; front edge of 2nd joint with 5 or 6 long bristles. Molar projecting considerably from surface of mandible, and provided on inner edge of grinding surface with a very finely pinnate seta which is as long as the molar; on edge opposite seta is a group of minute spines; grinding surface covered with fine, sharp teeth. Maxilla 1; inner plate with 6 or 7 plumose set; outer plate with 7 stout spines, some of which are notched; palp with row of spines at apex, below which are scattered setules. Maxilla 2; inner plate with seta on apex and on inner margin; outer plates with sete at apex. Maxillipeds; inner plates with notched spines at apex; outer plates with spines at apex and on inner edges. Lower lip normal. Amphipods 195 Figure 5. Synurella johanseni, n, sp. 1 Gnathopod 1, left, inside view. 2 Notched spine of palm. 3 Gnathopod 2, left, inside view. 4 Side-plate 4 205 Canadian Arctic Expedition, 1913-18 Figure 6. Synurella johanseni, n. sp. 1 Peraeopod 5. 2 2nd and 3rd abdominal segments. 3 3rd abdominal segment showing slight production of lower posterior corner. 4 Uropod J. 6 Uropod 2. 6 Telson and 3rd uropods. 7 3rd uropod. ‘Amphipods 215 Gnathopods short and strong. Gnathopod 1; juts 3-6 about as broad as long; 6th joint with sides parallel; palm nearly transverse, slightly convex and provided with a double row of notched spines and a few bristles. Dactyl reaching to end of palm. Gnathopod 2; 6th joint longer than broad and slightly widening distally; palm oblique, evenly convex and provided with a double row of notched spines and a few bristles; dactyl reaching to end of palm. Peraeopods slender; 1st and 2nd shorter than rest; 4th longest, proportion- ately longer in #; 3rd, 4th, and 5th peraeopods with 2nd joint moderately expanded and bearing shallow serrations on posterior border; dactyls each bearing a setule on the inner edge near extremity. Gnathopod 2, and peraeopods 1-3 each provided with a single, lamellar branchia; pereopods 4 and 5 each provided with two cylindrical branchie; ig segment 1 in ¢ with a single, small, cylindrical branchia on each side. Uropod 1 longest; peduncle a little longer than the subequal rami. Uropod 2 with peduncle as long as the subequal rami. Uropod 8 and telson in their normal position project at right angles to the urosome; uropod 3 in this position not reaching end of telson; peduncle broad and flat, and the single ramus small and triangular with 2 stout spines on outer margin; no spines on peduncle. Telson as broad as long; the slightly convex sides somewhat converging; end emarginate, depression reaching about one-third length of telson; lobes each provided at apex with 4 or 5 stout spines. Length.— 6 mm. Remarks.—To the middle of the ventral surface of each of the 2nd, 3rd and Ath thoracic segments is attached an elongated, papilliform process about half the length of the branchiz. Appendages probably of a similar nature were first observed and described by G. O. Sars in 1867 in the fresh water species Gam- maracanthus lacustris Sars and Pontoporeia affinis Lindstrém. 8S. I. Smith in 1874 also observed them in a species of Pontoporeia from the Great Lakes. These appendages, the function of which is not known, have apparently been observed only in fresh water species. This is the first appearance of the genus Synurella in America; the two other species of the genus having been found in Germany and Russia. The closely related genus Boruta was discovered in Hungary so that in all probability these genera will be found to occur throughout Russia, Siberia and northern North America. 43. Weyprechtia pinguis (Kroyer). 1838. Gammarus pingvis Kroyer, Danske Selsk. Afh., vol. 7, p. 252, pl. I, f. 5. 1906. Weyprechtia pinguis Srepsine, Tierreich, Amph. I, p. 382,.and synonymy. 1909. Weyprechtia pingwis BrUccEN, Mém. Acad. Imp. Sci. St. Pétersbourg, sér. 8, vol. 18, No. 16, p. 36. Station 41c: Bernard harbour, Northwest Territories (outer harbour), July 28, 1915, 5 fathoms, sandy mud with many alge; 1 specimen. Station 4l1u: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 16 specimens. Colour.—Dorsal parts of head and body segments dark vinaceous-brown. Sides of body segments and side-plates mottled with dark vinaceous brown and light grayish vinaceous. Antenne striped with bordeaux and light grayish vinaceous. Gnathopods, peraeopods, pleopods, uropods, and telson light grayish vinaceous. Distribution.—Arctic ocean (circumpolar). 225 Canadian Arctic Expedition, 1918-18 Family PHOTID. 44. Protomedia fasciata Kréyer. 1842. Protomedia fasciata Kroyer, Naturh. Tidsskr., vol. 4, p. 154. 1906. Protomedia fasciata STEBBING, Tierreich, Amph. I, p. ‘623, and synonymy. 1913. Protomedia fasciata STrEPHENSEN, Meddel. om Gr@niand, vol. XXII, p. 206. Station 43b: Dolphin and Union strait (off Stapylton bay), Northwest Territories, 25-30 fathoms, sandy mud with pebbles, but no alge; 1 specimen. Distribution.—Arctic ocean, North Atlantic, North sea, Skagerrak, Kattegat, Greenland, Spitzbergen, Iceland, Finmark (Norway), Sweden, Denmark. Family AMPITHOID. 45. Ampithoe rubricata (Montagu). 1808. Cancer (Gammarus) rubricatus Montagu, Tr. Linn. Soc. London, vol. 9, p. 99, pl. 5, wl. 1906. apatite rubricata STEBBING, Tierreich, Amph. I, p. 639, and synonymy. Station 14: Lat. 54° 23’ N., long. 164° 45’ W., July 2, 1913, surface; 1 specimen. Station 20b, c: Grantley harbour (port Clarence), Alaska, July 30, 1913, 2-3 fathoms, sandy mud with alge; 1 specimen. Distribution.—North Atlantic, with adjoining seas (Europe). These records greatly extend the range of this species northward and_ west- ward. An immature specimen of some species of Ampithoe was obtained at Station 20a, Grantley harbour, Alaska. Family ISCHYROCERID.* 46. Ischyrocerus anguipes Kréyer. 1838. Ischyrocerus anguipes KréyER, Danske Selsk. Afh., vol. 7, p. 283, pl. 3, f. 14 a-m. 1906. Ischyrocerus anguipes STEBBING, Tierreich, Amph. I, p. 658, and synonymy. 1913. Ischyrocerus anguipes TATTERSALL, Proc. Roy. Irish Acad., vol. XX XI, Part 42, p. 18. 1916. Ischyrocerus anguipes STEPHENSEN, Meddel. om Gr¢nland, vol. LIII, p. 294. Station 37j: Bernard harbour, Northwest Territories, September 1, 1914, pelagic, over 2 fathoms of water; 6 specimens. Station 41s: Bernard harbour, Northwest Territories (inner harbour), August 24, 1915, surface; 1 specimen. Station 41u: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 1 specimen. Station 42z: Bernard harbour, Northwest Territories (Dolphin and Union strait), December 12, 1915 (midnight), 0-3 fathoms; 1 specimen. Distribution.—Arctic ocean (widely distributed), North Atlantic, North sea, Norway, West Baltic. Family COROPHIID-. 47. Corophium bonellii M.-Edw. 1830. Corophia bonellit H. Minne Epwarps, Ann. Sci. Nat., vol. 20, p. 385. 1906. Corophium bonellii SreBBiNne, Tierreich, Amph. J, p. 691, and synonymy. Station 20, c: Grantley harbour (port Clarence), Alaska, July 30, 1913, 2-3 fathoms, sandy mud with many alge; 5 specimens. Five specimens (1 male and 4 females) which appear to be Corophium bonellii were taken at Grantley harbour, Alaska. The females agree quite *T have used the family name Ischyroceride rather than Jasside@ as the latter was created by Fieber in 1866 for a family of Hemiptera. Amphipods 23 E closely with Sars’s figure. As the male has not been described, I give here a description of the specimen taken on this expedition. Head with rostrum long and spear-shaped; lateral lobes short, apically rounded. Eyes dark, not very prominent. Antenna 1 reaching about middle of 5th joint of antenna 2; Ist joint of peduncle not very thick, flattened dorsally and armed below with one terminal spine and one near centre; 2nd joint thinner and a little shorter, 3rd joint a little thinner than 2nd and not quite half as long; flagellum about 2 length of peduncle and composed of 7 joints. Antenna 2; 2nd joint reaching very little beyond lateral lobes of head; 3rd joint equal in length to 2nd; 4th joint thickened and equal in length to 5th joint plus flagellum; lower distal corner of 4th joint pro- duced into a strong, forward-pointing tooth above which is a much shorter one; Sth joint slender and slightly curved, inner distal edge produced into a blunt rounded lobe; no tooth on under side of 5th joint; flagellum composed of 3 joints, the last very short, bearing 2 curved spines and several sete. Gnathopods, peraeopods, uropods, and telson as in female. Length.— 4 mm. Distribution. North Atlantic, North sea, Skagerrak, and English channel, Norway, West France. The present record marks a considerable western extension of the range of this species. Family PODOCERID. 48. Dulichia porrecta (Bate). 1857. Dyopedos porrectus Batre, Ann. Nat. Hist., ser. 2, vol. 19, p. 151. 1906. Dulichia porrecta StessBine, Tierreich, Amph. I, p. 712, and synonymy. 1913. Dulichia porrecta SrePpHENSEN, Meddel. om Gr¢nland, vol. XXII, p. 218. Station 57a: Cape Smyth (point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom water; 1 specimen. Distribution.—Arctic ocean, North Atlantic, North sea, West Greenland, Iceland, Lofoten island, South and West Norway, Danish waters, Shetlands. SusB-ORDER CAPRELLIDEA. Family CAPRELLID. 49. Caprella drepanochir Mayer. 1890. Caprella drepanochir Mayr, F. Fl. Neapel, vol. XVII, p. 81, pl. 7, £. 15, 33-34. 1903. Caprella drepanochir Mayer, Siboga-Exped., vol. XXXIV, p. 100, pl. 4, f. 11. Station 20g: Port Clarence, Alaska, August 4, 1913, 2-3 fathoms, mud with many alge; 7 specimens. Station 20h: Port Clarence, Alaska, August 4, 1913, surface (attached to floating alge); 20 specimens. Distribution.—Collected between China and Mouth of Amur river, Vlad- ivostok, Bering island, Chamisso harbour, and Eschscholtz bay, Alaska. Sup-oRDER HypERIIDEA. Family HYPERIIDA. 50. Euthemisto libellula (Mandt). 1822. Gammarus libellula Manor, Obs. Hist. nat. et Anat. comp. in itinere groenlandico factae, p. 32. 1895. Euthemisto libellula Sars, Crust. Norway, vol. I, p. 13, pl. 6, f. 1. Station 29f: Lat. 70° 13’ N., long. 140° 50’ W., April 4, 1914, water depth about 30 fathoms, from stomach of Phoca hispida Schreber; 8 specimens. 245 Canadian Arctic Expedition, 1913-18 Station 41u: Bernard harbour, Northwest Territories, end of August, 1915, from stomach of Salvelinus malma Walb.; 30 specimens. Station 42h: Bay at Bernard harbour, Northwest Territories, September 22, 1915, beachwater; 5 specimens. Station 43b: Dolphin and Union strait (off Stapylton bay), Northwest Territories, September 14, 1915, 25-30 fathoms, sandy mud with pebbles, but no alge; 7 specimens. Station 66a: Latitude about 73° 50’ N., long. 150° 15’ W., August 31, 1918: surface; 8. Storkerson, collector; 3 specimens. Station 66b: Latitude about 73° 50’ N., long. 147° W., September 17, 1918; surface; 8. Storkerson, collector; 6 specimens. Distribution: Arctic ocean, Greenland, Spitzbergen, Nova Scotia, Norway, Nova Zembia. 51. Hyperia galba (Montagu). 1813. Cancer gammarus galba Montacu, Trans. Linn. Soc., vol. XI, p. 4, pl. 2, f. 2. 1895. Hyperia galba Sars, Crust. Norway, vol. I, p. 7, pl. 2; pl. 3, f. 1, and synonymy. Station 9a: Lat. 55° 2’ N., long. 144° W., June 27, 1913, surface; 2 speci- mens. Station 27h: Lagoon-bay at Collinson point, Alaska, September 18, 1913, 0-1 foot of water; 1 specimen. Station 27m: Collinson point, Alaska, September 19, 1913, pelagic, over 1 foot of water (9-inch ice); 1 specimen. Station 27u: Collinson point, Alaska, October 5, 1913, pelagic, over 1 fathom of water; 1 specimen. Station 27y: Lagoon at Collinson point, Alaska, October 8, 1913, pelagic, over 2 feet of water; 1 specimen. Station 30a: Lat. 69° 41’ N., long. 141° 11’ W., May 4, 1915, pelagic, over 3 fathoms of water; 1 specimen. ; Color.—Animal translucent with dark vinaceous-drab markings, eyes very large and black, thorax with broad, dark vinaceous-drab band on side, second and third abdominal segments with dark vinaceous-drab dorsal spots, distal ends of the second joints of the gnathopods and first, second and third peraeopods marked with vinaceous-drab, peduncles of the pleopods also marked with vinaceous-drab. Distribution.—Atlantic coast of France and Britain, Baltic, Arctic ocean, Greenland, Spitzbergen, Nova Zembla, Kara sea, Murman coast. 52. Hyperoche kroeyeri Bovallius. 1885. Hyperia kroeyert Bovatiios, K. Svenska Vet.-Akad. Handlingar, Band 10, No. 14, 17 1887. Bias kroeyert Bovauutius, ibid., Band XI, No. 16, p. 18. 1895. Hyperoche kroeyert Sars, Crust. Norway, vol. I, p. 9, pl. 4, and synonymy. Station 27h: Lagoon-bay at Collinson point, Alaska, September 18, 1913, 0-1 foot of water; 1 specimen. Station 27m: Collinson point, Alaska, September 19, 1913, pelagic, over 1 foot of water (9-inch ice); 12 specimens. Station 27n: Collinson point, Alaska, September 20, 1913, pelagic, over 1 foot of water (9-inch ice); 6 specimens. Station 57a: Cape Smyth (Point Barrow), Alaska, August 8, 1916, pelagic, over 1 fathom of water; 4 specimens. Colour.—Central areas of eyes duck green. Dorsal parts of the body segments apricot orange. Sides of body, sideplates, gnathopods, peraeopods, pleopods, uropods and telson splotched with apricot orange. Rest of animal translucent. Amphipods 25 EB ' Mr. Johansen states that this species was found symbiotic in a large cteno- phore. Distribution.—Arctic ocean, Greenland, Labrador, Spitzbergen, White sea, Siberian polar sea. , 53. Parathemisto oblivia (Kréyer). 1838. Hyperia oblivia Kroyer, Danske Vid. Selsk. Afhandl, vol. 7, p. 70, pl. 4, f. 19. 1895. Parathemisto oblivia Sars, Crust. Norway, vol. I, p. 10, pl. 5, f. 1, and synonymy. Station 13g, h: Lat. 54° 30’ N. long. 159° 42’ W., July 1, 1913, surface? 1 specimen. Station 14: Lat. 54° 23’ N., long. 164° 45’ W., July 2, 19138, surface; 2 specimens. Station 2le: Lat. 68° 48’ N., long. 165° 10’ W., August 16, 1913, surface; 2 specimens. Station 27g: Collinson point, Alaska, September 26, 1913, pelagic, over 1 fathom of water; 1 specimen. Distribution.—British Isles, Greenland, Norway, Nova Zembla, Barents sea, North Atlantic, East coast of United States. About 50 immature Hyperiids were collected at station 18a, c, e, lat. 62° N., long. 167° 30’ W., at the surface. 26 E Canadian Arctic Expedition, 1913-18 APPENDIX. Additional data for the report upon the Amphipods of the Canadian Arctic Expedition, based upon specimens from the Neptune and other Canadian Expeditions. By CLARENCE R. SHOEMAKER. Family LYSIANASSID. 1. Anonyx nugax (Phipps). Cumberland gulf, Northwest Territories, September 4, 1904, from stomach of Cottus (Myoxocephalus) groenlandicus Bean, Neptune expedition; 6 specimens. Cape Fullerton, west side Hudson bay, Veptune expedition, 1903-4; 6 speci- mens. Hudson bay or strait, 1897? Diana expedition; 7 specimens. Winter harbour, Melville island, Northwest Territories, Arctic expedition, 1909; 1 specimen. Near mouth of Povungnituk river, east side of Hudson bay, Northwest Territories, 1898; A. P. Low, collector; 2 specimens. 2. Onisimus edwardsii (Kroyer). 1846. Anonyx edwardsii Kroyer, Naturh. Tidsskr., ser. 2, vo ].2, p. 1, 41. 1906. Onisimus edwardsii Steppine, Das Tierreich, Amph. I, p. 25, and synonymy. 1912. Onisimus edwardsii STEPHENSEN, Meddel. om Gr@¢nland, vol. XLV, p. 530. 1913. Onisimus edwardsii STEPHENSEN, Meddel. om Gr¢nland, vol. XXII, p. 121. 1916. Onisimus edwardsii StePpHENSEN, Meddel. om Gr¢gnland, vol. LIII, 1916, p. 285. Cape Fullerton, west side of Hudson bay, Neptune expedition, 1903-4; 5 specimens. Distribution.—Arctic ocean, North Atlantic and North sea, West Norway. 3. Orchomenella pinguis (Boeck). 1861. Anonyx pinguis Borcx, Forh. Skand. Naturf., m¢de 8, p. 642. 1906. Orchomenella pinguis Sreppine, Das Tierreich. Amph. I, p. 82, and aye. 1913. Orchomenella pinguis SrepHENsEN, Meddel. om Groniand vol. LI, p 66. 1916. Orchomenella pinguis STEPHENSEN, Meddel. om Grgnland, vol. LIL, 'p. 286. Cape Fullerton, west side Hudson bay, Neptune expedition, 1903-4; 3 speci- mens. Distribution —Arctic ocean, North Atlantic, North sea and Skagerrak, Siberia, South and West Norway, Malangen fjord, Finland, Mediterranean. 4. Socarnes bidenticulatus (Bate). Winter harbour, Melville island, Northwest Territories, Arctic Expedi- tion. May 13, 1909; 1 specimen. Winter harbour, Melville island, Northwest Territories, 7 fathoms. May 28, 1909, Arctic Expedition; 2 specimens. Amphipods 275 Family AMPELISCIDZ. | 5. Ampelisca eschrichtii Kréyer. Port Burwell, Ungava, July 28, 1904, Neptune expedition, 1903-4; 6 speci- mens. 6. Byblis species. Port Burwell, Ungava, July 28, 1904, Neptune expedition, 1903-4; 1 speci- men The poor condition of this specimen does not warrant a specific identifica- tion. Family ACANTHONOTOZOMATID-. 7. Acanthonotozoma serratum (Fabricius). 1780. Oniscus serratus FaBrictus, Fauna Groenl., p. 262. 1906. Acanthonotozoma serratum STEBBING, Das Tierreich, Amph. I, p. 218. 1912. Acanthonotosoma serratum STEPHENSEN, Meddel. fra den Naturh. Foren., vol. 64, p. 93. 1912. Acanthonotosoma serratum STEPHENSEN, Meddel. om Gr¢nland, vol. XLV. p. 596. 1913. Acanthonotosoma serratum STEPHENSEN, Meddel. om Gr¢gnland, vol. XXII, p. 167. 1913. Acanthonotosoma serratum STEPHENSEN, Meddel. om Gr¢nland, vol. LI, p. 67. 1916. Acanthonotosoma serratum STEPHENSEN, Meddel. om Gr@nland, vol LIII, p. 289. Port Burwell, Ungava, July 28, 1904, Neptune expedition; 2 specimens. Distribution —Arctic ocean, North Atlantic, North sea and Skagerrak, Greenland, Spitzbergen, Barents sea, Murman coast, Kara sea, North America, Bohuslain, Norway from Haugesund northward. Family OEDICEROTID. 8. Paroediceros lynceus (M. Sars). Port Burwell, Ungava, July 28, 1904, Neptune expedition; 1 specimen. Family PONTOGENEIID. 9. Pontogeneia inermis (Kroyer). Cape Fullerton, west side Hudson bay, Neptune expedition, 1903-4; 1 specimen. - Family ATYLID. 10. Atylus carinatus (Fabricus). Winter harbour, Melville island, Northwest Territories, Arctic expedition, 1907-9; 3 specimens. — . Winter harbour, Melville island, Northwest Territories, Arctic expedition, May, 1909; 1 specimen. —_ " Winter harbour, Melville island, Northwest Territories, Arctic expedition, 7 fathoms, May 28, 1909; 1 specimen. Family EUSIRIDA. 11. Rhachotropis aculeata (Lepechin). Hudson strait? Labrador? Hudson bay? Neptune expedition, 1903-4; 2 specimens. 28 5 Canadian Arctic Expedition, 1913-18 Family GAMMARID. 12. Gammarus locusta (Linné). Winter harbour, Melville island, Arctic expedition, May, 1909?; 8 speci- mens. Winter harbour, Melville island, Northwest Territories, Arctic expedition, 7 fathoms, May 28, 1909; 1 specimen. Wakeham bay, south side of Hudson strait, Ungava, September, 1904, Neptune expedition; 13 specimens. 13. Gammaracanthus loricatus (Sabine). Winter harbour, Melville island, Northwest Territories, Arctic expedition; 1 specimen. Winter harbour, Melville island, Northwest Territories, 7 fathoms, May 28, 1909, Arctic expedition; 1 specimen. Winter harbour, Melville island, Northwest Territories, May, 1909?, Arctic expedition; 1 specimen. Family ISCHYROCERID. 14. Ischyrocerus anguipes Kréyer. Cape Fullerton, west side of Hudson bay, Northwest Territories, Neptune expedition, May 27, 1904 (Beach?); 1 specimen. Family HYPERIID/. 15. Euthemisto compressa (Goés). 1865. Themisto compressa Gots, Ofvers. af Kgl. Svenska Vetensk-Akad. Forhandl., p. 533, pl. 41, fig. 34. 1870. Parathemisto compressa Borcx, Crust. Amph. boreal. et arct., Vid. Selsk. Forh. Christiania, 7 p. 7. 1895. Euthemisto compressa G. O. Sars, Crustacea of Norway, vol. I, p. 12, pl. 5, f. 2. 1912. Euthemisto compressa STEPHENSEN, Meddel. fra den naturh. Foren., vol. 64, p. 84. 1912. Huthemisto compressa STEPHENSEN, Meddel. om Gr¢niand, vol. XLV, p. 613. 1913. Huthemisto compressa STEPHENSEN, Meddel. om Grognland, vol. XXII, p. 103. 1913. Huthemisto compressa TarreRsALL, Proc. Royal Irish Academy, vol. XX XI, pt. 42, p. 21. 1916. Huthemisto compressa STEPHENSEN, Meddel. om Gr¢nland, vol. LIII, p. 275. Black Tickle, Labrador, beginning of September, 1903, pelagic, Neptune expedition; 1 specimen. Distribution.—Arctic ocean, Davis strait, east coast of Greenland, New England coast, Norwegian coast. 16. Euthemisto libellula (Mandt). Cumberland gulf, east of Blacklead island, (Baffin island), September 4, 1904, Neptune expedition, from stomach of Cottus (Myxocephalus) groenlandicus Bean; 2 specimens. ADDITIONAL NOTE. Some of the Amphipod Crustaceans collected by the Neptune Expedition, 1903-04, were sent to Prof. G. O. Sars, Christiania, Norway, for identification and are published (p. 368) in the report of the Department of Marine and Fisheries, Ottawa, Canada, 1905 (1906). As these specimens are still in Christiania they have not been examined at the United States National Museum, Washington, nor included in the report above. Amphipods 29 5 Professor Sars’s determinations follow:— Anonyx nugax (Phipps), Fullerton, Northwest Territories. Pseudalibrotus littoralis (Kroyer), Fullerton, Northwest Territories. Ischyrocerus angvipes (Kroyer), juv., Fullerton, Northwest Territories. Ampelisca eschrichti Kréyer, Port Burwell, Ungava. Euthemisto libellula (Mandt), North Somerset, Northwest Territories. 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Grgnlands Krebsdyr og Pycnogonider (Conspectus Crustaceorum et Pycnogonidorum Groenlandiae). Meddelelser om Grgnland, vol. XXII, 1913, pp. 93-228. Account of the Crustacea and the Pycnogonida collected by Dr. V. Nordmann in the summer of 1911 from Northern Strémfjord and Giesecke Lake in West Greenlaud. Meddelelser om Gr¢nland, vol. LI, 1913, pp. 65-68. Zoogeographical Investigation of certain Fjords in southern Greenland. Meddelelser om Gr¢nland, vol. LIII, 1916, pp. 275-297. Stuxberg, Anton. In A. E. Nordenskidld, Vega Expeditionens Vetenskaplika Iakttagelser, vol. I, 1882, pp. 679-812; vol. 5, 1887, pp. 60-73. In A. E. Nordenskiéld, The Voyage of the Vega, vol. I, II, 1881. Tattersall, W. M. The Marine Fauna of the Coast of Ireland, Part VIII. Pelagic Amphipoda of the Irish Atlantic Slope. ‘Fisheries, Ireland, Sci. Invest., No. IV, 1905 [1906/’’, pp. 1-39, pls. 1-5. Clare Island Survey, Part 42, Amphipoda. Proc. Royal Irish Academy, vol. XXXIJ, 1913, pp. 1-24. Weckel, Ada L. The Fresh-water Amphipods of North America. Proc. of the United States National Museum, vol. XXXII, pp. 25-58. Report of the’ Canadian Arctic Expedition; 1913-18. : Volume I: General Introduction, Narrative, Etc. Part.A: Worthen Party, 1913-18,: Part B: Southern Party, 1913-16. By Rudolph Martin’ Anderson. (In preparation). ‘ ‘ Volume I: Mammals and Birds. Part A: Mammals \ By I Rudolph: Martin Anderson. (In preparation). Part be Birds. | ‘By Hel . Anderson and P. A.. Taverner. (In preparation). oat a Volume i: Insects, Teteodystton: By C. Gordon Hewitt. ’ so press) ' j Part A: Collembola. By Justus W. Folsom. (Issued Part B: Neuropteroid Insects. By Nathan Banks. (Issued). ’ Part C: Diptera, By Chas. W. Alexander, Harrison G. Dyar, and J. R. Malloch. ‘(letued), ; Part A: ‘Widen. By F. Johansen. (In preparation). F i ¥ Part D: Mallophaga and mae By A. W. Baker, G. F. Ferris, and G. H. F. Nuttall. ‘Ussued). Part E: Coleoptera. By J. M. Swaine, H.C. Fall, C. W. Leng, and J. D. Sherman, Jr. (Issued). Part F: Hemiptera. By E. Pp. Van Duzee: (Issued). Part G: Hymenoptera and Plant Galls. By , Alex. D. MacGillivray, Charles T. Brues, F. Ww. L. Relea and E. Porter Felt. (Issued). Part H: Spiders, Mites, and Myriapods.. By I H. _Emérton, Nathan Banks, and Ren Vv. Chamberlin. ‘ (Issued). Part I: Lepidoptera. ee ee Gibson. (Issued). .; Part J: Orthoptera. By E.M. Walker. ‘(In press). ~ ‘Part K: General Observations on Insect Life in the Arctic. “ By Frits Johansen. “(In preparctin, : Volume IV: Botany. : ; _ 3 Part A: ‘Freshwater Algae =" Fre, shwater Diatoms. By Charles Ww. Lowe. a n preparation). Park B-- Marine. Algae» By F. Collins. (In preparation). , ' a Part C: Fungi,’ By John Dearness. (In preparation). ¢ ee Part D: Lichens. By K. L. Merrill. (In preparation). oh Part E: Mosses. By R. 8. Williams, (In press). , Volume V: Botany. ’ Part A: Flowering Plants and Ferns. By James ‘ME. Macoun and Theo. Holm. “(In prepaension). Part B: General Note on Arctic Vegetation. By Frits Johansen. (In preparation). ' ‘Volume VI: Fishes, Tunicates, Ete. Part B: ~Ascidians, ete. By A.G. Huntsman. (In preparation). Volume VI: Crustacea. Part A: Decapod Crustaceans. By Mary J. Rathbun. . (Issued). © Part B: Schizopod a ae By Waldo L. Schmitt. (Issued), ~~ _ Part C: Cumacea. By W.T. Calman. (In press). _ "Part D: Isopoda. By Migs P, L. Boone. (In press). } Part E: Amphipoda., By Clarence R. Shoemaker. (In ia Part F; Pycnogonida. LeonJ. Cole. . (In press): ~ Part G: Euphyllopoda. By. Johansen. (In Preparation). , Part a Cladocera. By Chancey Juday. (Issued). Part I: Ostracoda. By R: W. Sharpe. (In preparation). Part J: Freshwater Copepoda. By C. Dwight Marsh. ceil. iy Part K: Marine Copepoda. By A. Willey. .(Issued). ° Part L: Parasitic Copepoda. By Chas. B. Wilson. (In press). Part M: Girripedia. By H. A. Pilsbry. (In preparation). Volume VIE: Mollusks, Echinoderms, Coelenterates, Ete. Part A: Mollusks, Recent and: Fleistonens. By Wm. H. Dall. (Issued). : Part B: ‘Cephalopoda and) Pteropoda. By 8.8. Berry and W. F. Clapp. (In preparation). Part C: Echinoderms By Austin H. Cee: (Issued). ~ ~ ‘Part D: Bryozoa By R.C. Osburn. (In preparation). Part E: Rotatoria By H. K: Harring. (In preparation). Part F: Chaetognatha By A. G. Eateman. ‘(Un preparation). Part G: Actinozoa, and Alcyonaria. By A. E. Verrill. (In press). Part H: Medusae and Ctenophora. By H. B. Bigelow: | Usenet), Part I: Hydroids. By McLean: Fraser. ‘ Un preparation). 9 Part’ J: Porifera. Volume IX: Annelids, Parasitic worn Protozoans, Etc. Part A: Oli cheba, By Frank Smith and Paul S. Welch. (Issued). Part B: ane a By Ralph V. oe (In press). Part C: Rea By J.P. Moore. (In press). , Part D:\Gephyrea. By Ralph V. Chamberlin, (Issued). "Dart E: Acanthocephala. By H.J. Van Cleave. (Issued): Part F: Nematoda. By;N.A.Cobb. (In preparation), i Part G: Trematoda, By — . Cooper. (In preparation), ' Part H: Cestoda. By A. R..Cooper. (In preparation). ’ i ; Part I: Turbellaria.. By A. Hassell. (in ei Part J: Gordiacea. ° Part K: Nemertini. Part L: Sporozoa. By J. W. Mavor. (In preparation). Part M: Foraminifera. By J. A. Cushman... (Issued). ; Volume X: Plankton, Hydrography, Tides, Ete. Part-A: Plankton.’ By Albert Mann. (In preparation). ‘ Part B: Mariné Diatoms. By L. W. Bailey. (In preparation). |. Part C: Tidal Observations and Results. By W. Bell Dawson. (In aneen Part D: ‘Hydrography. (In preparation). ne % ”