STALK-EYED CRUSTACEA 275 



next joint on its summit or at its antero-external angle. 

 The first pair of legs, of the male, usually subequal, of 

 moderate size. The terminal joint of the walking legs is 

 stiliform, compressed, or may be smooth or armed with 

 spines. The abdomen usually covers the width of the 

 sternum between the basal joint of the last pair of 

 legs. 



Range. — Shore, shallow or deep water in temperate 

 and tropical seas. 



Subfamily I. Grapsinae. 

 Subfamily II. Plagusinae. 



Synopsis of the Subfamilies. 



A. Internal antenna; more or less transverse, covered 

 by the front, which is entire and not longitudinally cleft. — 

 {GrapsiHcs.) 



-U^IP^ 



Grapsiiiie. Plagiisiuce. 



B. Internal antennae, lodged in longitudinal clefts of 

 the front, are visible on a dorsal view. — {Plagnsiiice.) 



Subfamily I. Grapsinae. 



Grapsina Miers, Kingsley. 



Grapsime and Sesannincv, . . Dana. 



The internal antenucu, more or less transverse, are 

 covered by the front, which is not cleft antero-posteriorly. 



