NO. I POINT BARROW AMPHIPODA — SHOEMAKER 47 



Zembla, New Siberian Islands, East and West Greenland, and Grand 

 Manan. 



In the U. S. National Museum there are specimens of this species 

 from off Nova Scotia (45° 22' N., 58° 43' W.) ; off Newfoundland; 

 Port Burwell, Labrador; Cook Island, Unalaska; Kotzebue Sound 

 and Point Barrow, Alaska. The largest specimen in the present 

 collection measures 45 mm. This species has b«en recorded from 

 shallow water down to 400 m. 



ROZINANTE FRAGILIS (Goes) 



Paramphithoe fragilis Goes, 1866, p. 524, pi. 39, fig. 16. 

 Tritropis fragilis Boeck, 187 1, p. 160. 



Rozinante fragilis Stebbing, 1906, p. 354. — Shoemaker, 1930b, p, 325, fig. 45. — 

 Stephensen, 1940a, p. 291, fig. 33; 1944b, p. 99, 



Material collected. — Taken from the stomach of arctic cod {Boreo- 

 gaidus saida) caught in a lath trap through hole in ice in 21 feet of 

 water, 0.5 mile out, February 3, 1950, 2 specimens. 



Rozinante fragilis is probably a circumpolar species, which, in the 

 western Atlantic, has been recorded as far south as the Gulf of St. 

 Lawrence. It reaches a length of 22 mm., and has been recorded from 

 shallow water down to 400 m. 



Family GAMMARIDAE 

 GAMMARUS (RIVULOGAMMARUS) LACUSTRIS Sars 



Gammarus lacustris Sars, 1863, p. 210. — Smith, 1871, p. 453. — Schellenberg* 



1934, p. 210, figs. 1-4. 

 Gammarus limnaeus Smith, 1874, p. 651, pi. 2, figs. 6, 7. — Hubricht, 1943, p. 



684. 

 Gammarus pulex Sars, 1895, p. 503, pi. 177, fig. 2. 

 Gammarus (Ritnilo gammarus) lacustris Schellenberg, 1937, p. 490, figs. 2-6. — 



Stephensen, 1940a, p. 353, figs. 50, 51. 



Material collected. — Lake at Anaktuvuk Pass, Brook Range, Alaska, 

 August 1949, 25 specimens. 



Gammarus lacustris is a fresh-water species that inhabits cold 

 lakes of northern Europe and northern America. It is found in the 

 cold lakes of Alaska, in Canada, and the northern parts of the United 

 States from Maine to Washington, and has been recorded by Leslie 

 Hubricht from Michigan, Illinois, Missouri, Arkansas, and Okla- 

 homa. It reaches a length of 22 mm. 



GAMMARUS LOCUSTA (Linn.) var, SETOSA Dementieva 



Gammarus locusta var. setosa Dementieva, 1931, p. 80. — Stephensen, 1940a, 

 p. 321, fig. 41 ; 1944b, p. 109, fig. 8. 



