io6 STALK-EYED CRUSTACEA 



which the last is directed outwards and is very long ; 

 the latero-posterior border is armed with three small 

 spines. The rostrum is small, triangular, depressed in 

 the centre. The superior face of the hands is more or 

 less smooth, granular on their inferior edge and smooth 

 on the remaining faces ; the superior and external edges 

 are armed with compressed teeth, so arranged as to 

 form a crest. The last segment but one of the abdomen 

 of the male has a pointed central tubercle. 



Colour, light rose, sometimes marked with black ; the 

 fingers are carmine ; the teeth of the pincers have a 

 black margin. 



Range. — Guadaloupe, Vera Cruz, Florida. 



Subgenus Pisolambrus. 



PisolaDibrus ... A. Milne Edwards. 



The carapace is rounded, smooth, and without 

 pyramidal projections. The eyes are very large. The 

 basal joint of the internal antennae is large and swollen ; 

 it margins the eye on the inside in almost its whole 

 length. The external antennae are much reduced, and 

 their basal joint is three or four times smaller than that 

 of the internal antennae, so that the eye is almost com- 

 pletely exposed below. The fourth joint of the external 

 maxillipedes is dilated in front and outside, but truncated 

 on the inside. 



The efferent orifices of the branchial chamber is 

 continued on the pterygostomian region in a canal. 

 The third to fifth segment inclusive of the abdomen 

 of the male is soldered into a single piece. The legs 

 are lone and frail. 



