372 STALK-EYED CRUSTACEA 



6. Spiropagurus. 



Spiropagums . . . Stimpson, Henderson, A. Milne 



Edwards and Bouvier. 



Anterior portion of the carapace depressed, the 

 cervical groove deep ; front with the rostral projection 

 but slightly marked. Ocular peduncles short and stout, 

 with the cornea dilated ; the basal scales, of moderate 

 size, are separated by a considerable interval. Antennal 

 acicle slender ; the flagellum naked. First pair, of legs, 

 subequal, of small size, the right slightly larger; the 

 fingers, moving in a horizontal plane, are calcareous at 

 the tips. Second and third pairs of legs with long, 

 flattened, and ciliated terminal joints. First joint of the 

 fifth left leg in the male with a long, spirally coiled 

 membranous organ (formed by a protrusion of the vas 

 deferens), strengthened along its outer surface by a 

 corneous band ; the vas deferens of the right side 

 scarcely produced. They live in empty shells. 



Range. — West Indian Sea, Seas of India and Japan ; 

 at moderate depths and in very deep water. 



I. Spiropag-urus iris. 



Spiropagums iris ... A. Milne Edwards, A. Milne 



Edwards and Bouvier. 



The carapace is smooth and naked. The rostrum, 

 rounded, projects slightly ; the ophthalmic ring is exposed. 

 The eyes do not reach the level of the point of the 

 subantennary spine. The first pair of legs, of about 

 equal size, terminates in pointed fingers; there are small 

 spines that form below a regular border ; the fine hairs 

 between the spines and the teeth present iridescent re- 



