22 STALK-EYED CRUSTACEA 



and the flagellum is exposed on the sides of the rostrum. 

 The epistome is large and almost quadrilateral. The 

 fourth joint of the external maxillipedes is notched in 

 front for the insertion of the fifth, with the antero-external 

 angle rounded. 



The walking legs are of moderate length, and their 

 terminal joint is styliform. The abdomen of the male 

 has seven segments ; that of the female has five, the 

 three last segments being soldered together. They are 

 of small size. 



Range. — West Indian Sea, Coasts of Brazil and Chili. 



Synopsis op^ the Species. 



1. Rostrum short, about as long as front between the 

 eyes is broad. More or less rounded anteriorly. — (/. 

 obtusus^ 



2. Rostrum long, about one and a half or twice as 

 long as the breadth of front between the eyes ; sharp 

 anteriorly. — (/. forceps^ 



I. Inachoides obtusus. 



InacJioides obtnsiis . . A. Milne Edwards. 



The gastric region has six slightly elevated tubercles, 

 of which four are arranged transversely in front and 

 two behind. There are tw^o tubercles on the cardiac 

 region in the middle line ; the branchial and hepatic 

 regions have each two spines. The rostrum is short 

 with a broad base, about as long as the width of the 

 front between the eye-peduncles, triangular with rounded 

 edge. The basal joint of the external antennas has on 

 the outside a notched ridge which extends on the 

 buccal cavity. 



