NO. I POINT BARROW AMPHIPODA — SHOEMAKER ^'J 



ISCHYROCERUS COMMENSALIS Chevreux 



Ischyrocerus commensalis Chevreux, igoo, p. 104, pi. 12, fig. 2. — Stebbing, 

 1906, p. 739. — Shoemaker, 1930b, p. 344, fig. 51. — Gxjrjanova, 1935b, p. 5S8- 

 — Stephensen, 1944a, p. 28. 



Material collected. — In 80 feet, July 21, 1948, 3 specimens. In 125 

 feet, 4 to 5 miles out, September 9, 1948, 16 specimens. In 120 feet, 

 September 15, 1948, 5 specimens. In 420 feet, 7 miles out, August 9, 

 1949, I specimen. In 184 feet, 5 miles out, August 20, 1949, 7 speci- 

 mens. In 217 feet, 7.5 miles out, September 6, 1949, 9 specimens. In 

 453 feet, 8 miles out, October 11, 1950, i specimen. Dredged in 6 to 

 50 m., July 29, 1951, I specimen. 



Ischyrocerus commensalis was described by fidouard Chevreux 

 from ofif Newfoundland in 1900. It was recorded from the Gulf of 

 St. Lawrence in 1930. Gurjanova recorded it from Jugor Strait in 

 1935 ; and in 1944 Stephensen recorded it from West Greenland. 

 The present records are the first for Alaska. Numerous specimens 

 of this species were taken in Pavlof Bay, Alaska Peninsula, in 1940, 

 by Dr. Waldo L, Schmitt while on the Alaska king crab investigation. 



This species measures about 6 mm., and has been taken as deep as 

 682 m. 



Family COROPHIIDAE 



UNCIOLA LEUCOPIS (Kroyer) 



Unciola leucopis Sars, 1894, p. 620, pi. 222. — Stebbing, 1906, p. 678. — Gur- 

 janova, 1935a, p. 78. — Stephensen, 1942, p. 405; 1944b, p. 129. — Shoemaker, 

 1945b, p. 451, fig. 3- 



Material collected. — In 80 feet, September 9, 1948, i specimen. In 

 438 feet, 12. 1 miles out, August 17, 1949, i specimen. In 477 feet, 

 16 miles out, September 6, 1949, 3 specimens. In 218 feet, 4.3 miles 

 out, October 6, 1949, 7 specimens. In 295 feet, 5 miles out, October 6, 

 1949, 4 specimens. In 341 feet, 6 miles out, October 11, 1949, i speci- 

 men. In 453 feet, 8 miles out, October 11, 1949, 4 specimens. In 

 152 feet, 3.5 miles out, October 14, 1949, i specimen. In 162 feet, 

 3.2 miles out, February 18, 1950, 2 specimens. Dredged at 38 m., 

 July 29, 1 95 1, near Point Barrow, i specimen. 



Unciola leucopis has been recorded from Nova Zembla, Spitz- 

 bergen, west coast of Norway, Iceland, east and west coasts of Green- 

 land, and along the east coast of North America down to Georges 

 Bank off the coast of Massachusetts. The present records are the first 

 for Alaska. This species reaches a length of 15 mm., and has been 

 taken as deep as 1,260 m. 



