STALK-EYED CRUSTACEA 375 



I. Catapagurus sharreri, 



Catapagnnis sharreri ... A. Milne Edwards and 



Bouvier, S. J. Smith, 

 Agassiz. 



Catapas:urus socialis 1 ^ t r- -.i 



^ , ..... S. J. Smith. 



Heniipagiiriis social is] 



The gastric region of the carapace is marked by two 

 prominent lobes. The front has three slightly marked 

 prominences, the middle is wide and the most prominent ; 

 the lateral parts of the front are oblique. The ophthalmic 

 rings are completely exposed ; the scales are scarcely 

 widened at their base, thin, sharp, long, and terminating 

 a little behind the posterior border of the cornea and the 

 centre of the eye-stalk ; these last are short, being about 

 half the breadth of the front. They are compressed in an 

 oblique plane. The antennulary peduncles are thin ; their 

 last joint is about as long as the superior flagellum, and 

 about once and a half the breadth of the penultimate joint. 

 The antennal acicle is longer than the eyes, reaching 

 almost to the centre of the last joint. The flagellum 

 is long. 



The first pair of legs smooth on the external face. 

 The right leg slightly shorter than the left ; its pincer is 

 almost three times as long as broad, being broadest on 

 a level with the articulation of the movable finger; it is 

 slightly convex on both sides. The walking legs are 

 slightly longer than the large pincer, compressed towards 

 the end, and terminating in a wide and flat finger capable 

 of being folded on preceding joint. The penultimate pair 

 are slightly hairy and monodactyle, the last pair is very 

 small. 



Range. — Barbados, St. Kitts. 



