STALK-EYED CRUSTACEA 41 



2. Anomalothir frontalis. 



Anovmloptis frontalis . A. Milne Edwards. 



The carapace is wide behind, and not so elongated. 

 The rostral horns approach each other to their ex- 

 tremities. The suborbital border is unarmed. The spine 

 on the basal joint of the external antennae is very small. 



Range. — Barbados, Montserrat, Guadaloupe, Dom- 

 inica. 



2. Epialtus. 

 Epialtus . . . H. Milne Edwards, Dana. 



Carapace oblong or orbiculate, more or less hexagonal 

 in outline, sometimes with lateral expansions. The 

 rostrum is wide, simple, emarginate or bifid. The eyes 

 are short. The orbits are incomplete below. 



The external antennae are hid under the rostrum ; 

 the flagellum very short. The fingers of the first pair 

 of legs are excavated at their extremities. The walking 

 legs often have, on the inferior border of the last joint, 

 a setiform tubercle. The last joint but one has no lateral 

 tooth. The first pair of walking legs is the longest. 



The abdomen of the male has six or seven segments. 

 Crabs of small size. 



Range. — East and West Coast of North and South 

 America ; in deep water. 



Synopsis of the Species. 



A, Rostrum an equilateral triangle. 



a. Front angle rounded. — {E. bituberculatus.) 



b. Front angle notched. — {E. dilatatus.) 



B. Rostrum long and narrow, with rounded end. — 

 {E. longirostris.) 



