AMPHIPODS FROM NORTH AMERICAN WEST COAST — SHOEMAKER 41 7 



Female. — Ovigerous female like male, except that upper sui'face of 

 fom-th and fifth peduncular joints of antenna 2 do not bear groups 

 of short setae, but there are short setae which do not form groups. 

 Female large, measiu"ing 21 mm. 



Remarks. — Stilipes distincta superficially very much resembles a 

 hyperiid amphipod, such as Hyperia. The 3 species, S. lactea (Bar- 

 nard), S. sanguinea (Hurley), and *S'. distincta Holmes, resemble one 

 another superficially but differ slightly in some details. S. lactea 

 differs from both *S'. sanguinea and S. distincta in having the fifth joint 

 of gnathopod 1 longer than that of gnathopod 2. The fifth joint 

 of both gnathopods in S. distincta is somewhat longer than in either 

 of the other 2 species. The outline of the first coxal plate is different 

 in the 3 species. Barnard says that the postero-inferior angle of 

 the second pleon segment is quadrate, not acute. In *S'. distincta 

 this angle is sharply produced. Barnard says merely that the rostrum 

 of ^S. lactea is minute, and Hurley does not mention the rostrum in 

 S. sanguinea. The rostrum in S. distincta seems to be quite unusual 

 in shape (fig. Sb) and may be of diagnostic importance. The spine- 

 teeth of the outer plate of maxilla 1 are figured as being evenly curved 

 in S. lactea and S. sanguinea, but in S. distincta these teeth are some- 

 what compoundly curved. The eye in S. lactea and S. distincta 

 appears to be more or less oval, but in S. sanguinea it is figured as 

 circular. The telson is somewhat differently shaped in the 3 species. 

 In the specimens of S. distincta in the U.S. National Museum the 

 original color has entirely disappeared, the specimens having been 

 in alcohol since 1905. S. lactea is said to be brown and white, and 

 in S. sanguinea the eye is pink and the other regions of the body 

 orange or deep blood-red. The discovery of additional specimens 

 of this genus will help to clear up their relationships. 



Family Paramphithoidae 



Uschakoviella echinophora Gurjanova 



Figure 12 



Uschakoviella echinophora Gurjanova, 1955, p. 200, figs. 14-15. 



Female. — Head, upper part rounding, with small blunt forward- 

 pointing rostrum, below which is slight upward-pointing conical 

 protuberance; lateral lobes very shallow; lower front corner slightly 

 produced; row of spines running from top of head down through eye, 

 and few spines below eye. Eye of medium size, bulging, colorless, 

 which may be because of long preservation in alcohol (since 1890). 

 Antenna 1 about % length of body; first joint slightly longer than 

 second, which is about twice as long as third; flagellum slender, com- 

 posed of about 35 joints; first peduncular joint bearing several long 



