3IO STALK-EYED CRUSTACEA 



cavity, is the largest. Posterior extremity of carapace 

 narrow^ with a rugose margin concealing base of abdomen ; 

 under surface pitted 



First pair of legs stout; outer surface rugose with 

 tubercles and pits; hand with four teeth on superior crest. 

 Walking feet (except last joint, which is stout and hairy 

 below) naked, compressed, and crested above and below. 



Range, — Barbados, Montserrat, Dominica, St. Vincent, 

 Grenada ; in deep water. 



Family III. Leucosidae. 



Leiicosidce . . . Dana, Miers. 

 Leucosiens . . . H. Milne Edwards. 



Afferent channels to the branchiae opening at the 

 antero-lateral angles of the palate, and not behind the 

 pterygostomian region. The fifth and following joints 

 of the external maxillipedes are wholly concealed behind 

 the triangular fourth joint. The intromittent sexual 

 appendages in the male are exserted from the sternum. 

 Posterior legs normally developed. 



Subfamily Iliinae. 



Iliince Miers. 



The anterior frontal region of the carapace is not 

 narrowed and produced anteriorly. No thoracic sinus 

 is developed. 



Synopsis of the Sections and Genera. 



I. The carapace is not produced over the bases of 

 the walking legs. The palms of first pair of legs very 

 slender and elongated ; the fingers slender, nearly straight, 

 or with incurved tips. Pterygostomian channels have 

 usually two notches at the distal extremity. — (Sect. I.) 



