GAMMARIDEA. 957 



JVLera SETIPES. 



Gracilis, epimeris angustis. Oculi rotundati. Antennae corporis longi- 

 tucline; lmce paulo longiores, hasi breviore quam flagellum, articuTo 

 secundo parce longiore quam primus, appendice 6-articulatd ; 2dae hasi 

 longiore quam basis lmarum, flagello breviore quam basis. Pedes lmi 

 parvuli; manus 2da dextra valida subtriangulata, bad angusta, manus 

 sinistra parvida, apice parce latior, paulo oblique truncata. Pedes sex 

 postici subwqui, sextis parch longioribus, setis brevibus, articulo tertio 

 postice serrato. 



Slender, epimerals narrow. Eyes round. Antennae as long as body, 

 the superior a little the longer, base shorter than flagellum, second 

 joint sparingly longer than first, appendage five-jointed; inferior 

 pair with the base longer than base of superior pair, flagellum 

 shorter than base. Anterior feet quite small. Eight hand of 

 second pair very large, sub triangular, narrow at base; left hand 

 very small, narrow at base, with an obliquely truncate apex. Six 

 posterior feet subequal, the sixth pair slightly the longest, joints 

 with short setae, the third joint serrate behind. 



Plate 66, fig. 7 a, animal, enlarged; 6, small hand of second pair. 



Shores of Harbour of Rio Janeiro, among the sea-weed near the fort, 

 not far from Pray a Grande. 



Length, four lines. The posterior thoracic segments are longer than 

 the preceding. The first joint of base of the inferior antennae has a 

 prolonged lower apex, nearly as long as next joint. The small hand 

 of second pair has the truncation of apex but little oblique, and 

 slightly convex. The third joint of six posterior legs is stout, and has 

 three distinct serratures on the posterior margin, where the setae ori- 

 ginate. 



G. (Mcera) setijpes, Dana, Proc. Amer. Acad. Sci., ii. 213. 



