STALK-EYED CRUSTACEA 21 



sharp, flat tooth directed downwards. The postocular 

 spine is in the form of a horizontal wing, and more or 

 less pointed. The suborbital border is raised and 

 toothed. The rostrum is in the form of a triangular 

 pyramid, covered with hooked hairs, spinous above, 

 smooth below ; it is curved laterally. The basal joint 

 of the external antenna,^ is bowed downwards ; its lateral 

 edges are developed into prominent ridges, bound to 

 each other by a small transverse ridge. The antennular 

 fossae are bounded by a ridge ; the partition between 

 them is prolonged below into a triangular and pointed 

 tooth. The epistome is straight and granular. The 

 pterygostomian region has a strong spine, situated below 

 and behind the hepatic spine. 



The pincers are ornamented with sharp granulations 

 and a fringe of long hairs. The walking legs have 

 straight hairs and bunches of curled hairs. The last 

 joint is hairy. The sternum has two pointed elevations 

 between the bases of the first pair of legs ; its divisions 

 are well marked. The abdomen of the male is short 

 and smooth. 



Range. — Barbados, Montserrat, Grenadines, St. Vin- 

 cent, Havana ; in deep water. 



2. Inachoides. 



Inachoides . Dana, A. Milne Edwards and Lucas, 



Miers. 

 XipJius . . Eydoux and Souleyet. 



Carapace subtriangular, pointed in front, wide and 

 swollen posteriorly ; the regions well defined. The 

 rostrum a single styliform spine. The orbits are entire ; 

 no praeocular spine ; postocular spine well developed. 

 The basal joint of the external antennae is straight. 



