166 



STALK-EYED CRUSTACEA. 



In the subjoined list I have arranged the specimens, in so far as their 

 variability admits, in accordance with the division into varieties above made. 



In the typical form the short rostrum overhangs the face like a hood. 

 Upon two species with rostra like this, Bate based his genus Tropiocaris* 

 T. planipes, the type of the genus, appears to be the same as Smith's Ephpina 

 henedidi.^ Neither Sph/jrinu nor Tropiocaris seem to be separated from Acan- 

 thephyra on sufficient grounds. 



A. curtirostns in its typical form resembles A. temnpes [Tropiocaris tcmdpes 

 Bate), but judging from Bate's figure and description, it differs from the 

 latter in the following regards : the presence of a prominent tooth on the 

 lower edge of the rostrum, and a dorsal carina on the second abdominal seg- 

 ment ; the great prominence of the tubercle on the inner side of the eye- 

 stalk ; and the shape of the antero-lateral margins of the carapace, which 

 are much less oblique than in A. tcmdpes. 



* Rep. Challenger Macrura, p. 834, 1888. 



t Proc. U. S. Nat. Mus., VII. 506, 1885 ; Ann. Rep. U. S. Fish OoHim. for 1885, p. 674, Plato XTV. 

 Fig. .3, Plate XVI. Fig. 4, 1886. 



