STALK-EYED CRUSTACEA 313 



slightly swollen. First pair of legs almost three times as 

 long as the postfrontal portion of the carapace. 

 Range. — West Indies, Jamaica. 



2. Iliacantha. 



Iliacantha . . Stimpson, Miers. 



Carapace convex, ovoid or subglobose ; the lateral 

 margins arcuated, with a protuberance or tubercle upon 

 the pterygostomian region, and with three posterior lobes 

 or spines. The front is narrow, and slightly concave 

 anteriorly ; the orbits have indications of three marginal 

 fissures, and a wide interior hiatus. Eyes small. The 

 pterygostomian channels, at their anterior extremities, 

 project beyond the orbits, being strongly defined and 

 bi-emarginate. Internal antennae slightly oblique. Basal 

 joint of external antennae slender, not filling the interior 

 orbital hiatus. The external maxillipedes have their 

 fourth joint triangulate ; external appendages rather 

 narrow, with the exterior margin straight. First pair 

 of legs slender and rather long, with the fourth joint 

 subcylindrical and granulated ; palm slender, narrowing 

 distally and somewhat contorted, so that the fingers 

 open vertically ; the fingers, very slender, are armed with 

 fine, usually spinuliform, teeth. Walking legs slender 

 and of moderate length. The abdomen, in the male, 

 is composed of seven free joints. 



Range.— Florida Straits to Bahia through the West 

 Indian Sea; in deep water. 



I. Iliacantha subglobosa. 



Iliacantha sithgiobosa . Stimpson, A. Milne Edwards. 

 Carapace subglobose, smoothly and evenly convex, 

 and unarmed, except posteriorly, where there are three 



