440 STALK-EYED CRUSTACEA 



I. Polycheles. 



Polycheles . . . Heller, Spence Bate. 



Dorsal surface of carapace flattened. Antero-lateral 

 angles projecting beyond the anterior margin. Abdomen 

 not longer than the carapace. Eyes obscure, immovably 

 lodged in an orbit excavated in the dorso-frontal margin 

 of the carapace, more or less covered by its antero-lateral 

 margin. Internal antenna; have the outer flagellum the 

 shortest. The external antennae terminate in a long 

 slender flagellum. The first four pairs of legs are armed 

 with pincers; the first pair is the largest; the fifth pair 

 in the male terminates in a simple style-like joint. The 

 first pair of abdominal appendages in the male has a long 

 and slender two-jointed stalk terminating in a broad 

 spoon-like extremity; in the female it is two-jointed, but 

 slender and feeble throughout. The second and four pos- 

 terior pairs are two-branched, the branches are fringed 

 with long ciliated hairs ; the inner branch, in the male, 

 supports two subequal processes ; in the female, one. 

 The swimming organ is symmetrical and well developed, 

 its outer branch is broad. Gills attached to body wall, 

 to membranous articulation, and first joint of anterior 

 four pair of legs. There are branchial plates on these 

 and on the external maxillipedes. 



Range. — West Indies, Nova Scotia, Mediterranean 

 Sea, Fiji, Celebes ; in deep water. 



I. Polycheles crucifera. 



PolycJieles crucifera 



,„.,, . .^ , . Suhn, Spence Bate. 



WtUeincesia crucifera] 



Carapace ovate ; lateral margins fringed with large 

 teeth ; frontal margin armed with a single rostriform 



