NO. I POINT BARROW AMPHIPODA — SHOEMAKER I3 



U. S. National Museum there are specimens from Albatross Station 

 2497 (45° 04' N., 59° 36' W.) ; Casco Bay, Maine; and Salem, Mass. 



Sven G, Segerstrale (1937, pp. 1-183) has given a revision of 

 Pontoporeia and has concluded that P. sinuata Ekman is the male of 

 P. femorata Kroyer. Pontoporeia ekmani Bulycheva (1936, p. 246), 

 described from the Sea of Japan, appears to be a synonym of 

 P. femorata. His figures 7-1 1 show the characters of the female of 

 P. femorata, some of the specific characters of which are quite 

 variable. Bulycheva's description and figures of the dorsal pro- 

 tuberance of the first urosome segment agree with those given by 

 Ekman for P. sinuata, which Segerstrale believes is a synonym of 

 P. femorata. 



Both male and female specimens were taken in 471 feet of water 

 off Point Barrow. The characters of the male agree well with those 

 given by Ekman for P. sinuata. Pontoporeia femorata reaches a 

 length of 17 mm., and occurs as low as 188 m. 



Family AMPHILOCHIDAE 

 GITANOPSIS ARCTICA Sars 



Figures 3, d-j, 4, a-j 



Gitanopsis arctica Sars, 1892, p. 227, pi. 77, fig. 2. — Stebbing, 1906, p. 155. — 

 Stephensen, 1938, p. 161; 1940b, p. 28. 



Material collected. — In 125 feet, 4 to 5 miles out, September 9, 

 1948, I specimen. In 216 feet, 4^ miles out, October 6, 1949, i speci- 

 men. In 175 feet, 4 miles out, October 14, 1949, i specimen. 



Gitanopsis arctica has been recorded from south of Nova Zembla, 

 North Norway, Iceland, and South Greenland. In the United States 

 National Museum there are specimens from Northumberland Island, 

 Murchison Sound, North Greenland; and the Bay of Fundy. The 

 present records from Alaska extend the range of this species con- 

 siderably westward. This is a small species reaching a length of 

 5 mm. It has been recorded from shallow water down to 90 m. 



Family STENOTHOIDAE 



In the Stenothoidae several of the characters are apparently 

 undergoing a change. The accessory flagellum may be retained as a 

 rudimentary i -jointed appendage, but is usually missing. The palp 

 of the mandible may be reduced to two joints or one, or may be 

 entirely missing. In maxilla i the palp may be reduced to one joint. 

 The second joint of the last two peraeopods may be expanded, or 

 reduced to the linear state in one or both of these appendages. In 



