458 STALK-EYED CRUSTACEA 



antennas, short, terminate in two short flagella; the basal 

 joint is hollowed to receive the eye ; it has no external 

 spine. The external antenna; have a disc-like basal scale; 

 the flagellum is about half the length of the animal. 



The first pair of legs large, the third and fourth joint 

 fused together, the sixth joint is long and ovate ; there is a 

 strong and simple seventh joint. The second pair of legs 

 is long and slender, and the pincer is feeble. 



The gills are attached to the body wall and to the 

 membrane between the body and the first' joint of the 

 external maxillipede, and of the first three pairs of legs. 



Range. — West Indies, North and South Atlantic, 

 Indian Ocean, Japan, Fiji. 



Synopsis of the Species. 



A. The rostrum has no median keel. 



a. The hepatic region is almost smooth. The seventh 

 segment of the abdomen is straight. — {G. spinicaiida?) 



B. The rostrum has a median keel. 



b. The hepatic region is rough. The seventh segment 

 of the abdomen is curved upwards. — {G. nobilis?) 



C. The rostrum is straight. 



c. The carapace has in front and below a strong spine 

 directed outwards and forwards.— (C aculeata.) 



I. Glyphocrang-on spinicauda. 



GlypJwcrangoii spinicauda . . A. Milne Edwards. 



The carapace, very resistant, is covered with large 

 rough tubercles arranged in bands more or less elevated, 

 forming prominent ridges on each side. The gastro- 

 cardiac groove is deep, and the smooth hepatic region is 

 bounded behind by a deep grove. There is a strong 

 curved spine above and inside upon the anterior edge 



