46 STALK-EYED CRUSTACEA 



into three lobes of about the same size by two 

 longitudinal depressions, which join the cervical groove 

 behind. The protogastric lobes are well marked on 

 the outside, but on the inside they join the metagastric 

 lobe ; this latter is raised to a point upon the others, 

 where it is separated from the urogastric lobe by a 

 deep groove. The anterior cardiac lobe is conical, 

 prominent, and surmounted by a large tubercle ; the 

 posterior cardiac lobe is much rhore depressed, and 

 divided into two parts by a transverse groove. The 

 hepatic region is small and rounded. The branchial 

 region has on its middle a tubercle smaller than the 

 cardiac lobe. The branchial border, over the base of 

 the legs, is cut into three small lobes. The pterygosto- 

 mian region is cut into lobes. 



The basal joint of the external antennae has the 

 same granulations as the carapace. There are large 

 granulations on the epistome as well as on the abdomen. 



The first pair of legs, in the female, is cylindrical. 

 The walking legs are smooth ; the three first pairs are 

 about the same length, the fourth pair is a little shorter. 



Range. — Barbados. 



Subfamily V. Stenocionopinae. 



Stenocionopince . . Miers. 



Carapace somewhat oblong, and posteriorly prolonged. 

 Rostrum composed of two spines. Eyes elongated and 

 retractile, partly concealed by the praeocular spine, which 

 is greatly elongated. Basal joint of external antennse 

 considerably enlarged throughout its entire length. 



The articulation between the third and fourth joint 

 of the external maxillipedes is often peculiar, the latter 

 beine dovetailed into the former. 



