STALK-EYED CRUSTACEA 177 



more prominent than the others. The epistomian 

 apophysis is short, and exceeds shghtly the front. The 

 endostome is smooth. I-egs of the first pair are short 

 and robust. Fourth joint has three spines on its anterior 

 border, and one on its posterior border a little behind the 

 extremity. The fifth has two spines, that of the antero- 

 internal angle almost as short as the spine on the external 

 face. The hand has ridges, slightly granulated and armed 

 with two short spines, one above the articulation of the 

 fifth joint, the other above the base of the movable finger. 

 Abdomen of male triangular, its edges slightly sinuous and 

 very pointed. 



Colour yellow or red, with numerous small black 

 circular spots. 



Range. — Guadaloupe, Gulf of Mexico, Vera Cruz, 

 Brazil, New York. 



Subgenus Amphitrite. 



Amphitrite Miers. 



Neptiines angulalrcs . A. Milne Edwards. 



The carapace narrower; antero-lateral margins form- 

 ing with the frontal margin an angle or a curve with a 

 short radius. Lateral epibranchial spine well developed. 



The spine on the inner margin of the fifth joint of the 

 first pair of legs normally developed. 



3. Neptunus (Amphitrite) anceps. 



Neptunus anceps ... A. Milne Edwards. 



Lupa anceps Saussure. 



Lupea duchassagni . . Desbonne and Schramm. 



Achelous anceps . . . Stimpson. 



The carapace is a little wide ; the antero-lateral edges 

 are much more wide than the postero-lateral borders, 



