8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



Tryphosa triangula was described from 4 males measuring 7 mm., 

 taken southwest of Iceland (63° 15' N., 22° 23' W., 216 to 326 m.). 

 Gurjanova, in 1936, recorded 8 specimens from the Kara Sea. The 

 present specimen from Point Barrow, a female, measuring about 

 10 mm., makes the third record of the occurrence of this species. 



TRYPHOSA GROENLANDICA Schellenberg 



Tryphosa groenlandica Schellenberg, 1935, p. 20. — Stephensen, 1944b, p. 33, 

 fig. I. 



Material collected. — Taken in 37 feet, March 10, 1950, 2 specimens 

 (caught in screen trap through hole in ice). 



This species was described by A. Schellenberg from East Green- 

 land in 1935, and Stephensen recorded it from East Greenland in 

 1944. The two specimens taken at Point Barrow agree in all details 

 with the original description, and show plainly the unusually long 

 peduncle of the second uropod, as figured by Stephensen. The present 

 record is the first for the occurrence of this species outside of East 

 Greenland. Tryphosa groenlandica reaches a length of 10 mm., and 

 it has been taken down to 12 m. 



Family STEGOCEPHALIDAE 

 STEGOCEPHALOPSIS AMPULLA (Phipps) 



Stegocephalus ampulla MireoocH, i88sb, p. 145. — Bruggen, 1909, p. 14, pi. i, 



fig. i; pi. 3, figs. 11-19. 

 Phippsia ampulla Stebbing, 1906, p. 89. 

 Stegocephalopsis ampulla Schellenberg, 1924, p. 200. — Stephensen, 1935, p. 



112, fig. 18; 1944b, p. 39. 



Material collected. — Taken in 125 feet, 4 to 5 miles out, Septem- 

 ber 9, 1948, I specimen. 



A large species, probably circumpolar. It was recorded by Murdoch 

 from Point Barrow in 1885, from specimens taken by the Point 

 Barrow Expedition of 1881-1883. In the U. S. National Museum 

 there are specimens from Hare Island, West Greenland ; Indian Point, 

 Bering Strait; and a specimen, measuring 56 mm., taken by the 

 steamer Albatross at station 5018 in Okhotsk Sea. It has been taken 

 between 165 and 672 m. 



STEGOCEPHALUS INFLATUS Kroyer 



Stegocephalus inflatus Sars, 1891, p. 198, pi. 69. — Stebbing, 1906, p. 91. — Shoe- 

 maker, 1920, p. 9; 1930b, p. 244. — Stephensen, 1925, p. 129; 1944b, p. 39. — 

 Gxjrjanova, 1935a, p. 72. 



Material collected. — Taken in 130 feet, 4 miles out, August 9, 



