26 STALK-EYED CRUSTACEA 



tubercles. The subhepatic and pterygostomian regions 

 have sharp spines. 



The first pair of legs is bowed, and about as long as 

 the carapace ; the superior border of the arm and forearm 

 has spines ; the hand is almost smooth, and is as long as 

 the fingers. The legs of the second pair are twice as long 

 as the carapace. 



The sternum, the abdomen, and the external maxil- 

 lipedes are granular. 



Range. — Dominica, Barbados. 



5. Euprognatha. 



EuprognatJia . Stimpson, A. Milne Edwards. 



The carapace is subpyriform. The rostrum appears 

 to be composed of three spines, the central spine being 

 the interantennular spine, which points forwards and 

 downwards; or of four or five spines, from the presence 

 of a spine from each basal antennal joint. There is an 

 erect spine on the orbital arch. Postocular spine reaches 

 beyond the end of the eye. Eye is large ; peduncle short. 

 Basal antennal joint is armed at the anterior extremity 

 with a slender spine reaching forward as far as the rostral 

 horns ; the flagellum is exposed from above. The fourth 

 joint of the external maxillipedes is L-shaped, and strongly 

 produced beyond the insertion of the fifth joint. Legs 

 long and slender. Last joint but one of the walking legs 

 of first pair more than twice as long as the terminal joint ; 

 and three times as long as the joint next it on the inside. 



Range. — West Atlantic. 



Synopsis of the Species. 



A. Rostrum appears to be composed of five spines, 

 the central being; from the ridge on the interantennular 



