102 AMPniPODA NOHMALIA. 



"which the dactylos closes (from wliich the specific name is de- 

 rived) ; dactylos arcuate. Three posterior pairs of pereiopoda 

 having the margins of the basa serrated; the mcra and carpi 

 nearly as broad as long, having the margins serrated ; propoda 

 straight, having fasciculi of hairs on the posterior margins and of 

 spines on the anterior ; dactyla articulated on the anterior angle 

 of the extremity of the propoda, arcuate, having a protuberance 

 tipped with a solitary hair upon the convex margin. Pleopoda 

 extending nearly to the same length ; the posterior pair having 

 the rami scarcely longer than the base, fringed and tipped with 

 short spines. 

 Length ^ths of an inch. 



Hah. Genoa {Captain Lewis). 



7. Moera pectenicrus, n. s. (Plate XXXIV. fig. 8.) 



Eyes small, irregular. Superior antennae scarcely half the length of 

 the animal; peduncle ha\ing the three joints subequal; flagellum 

 as long as the peduncle, articuli not longer than broad ; secondary 

 appendage ha\Tag two articuli. Inferior antennae scarcely as long 

 as the peduncle of the superior ; flagellum scarcely longer than 

 the last joint of the peduncle. Fh'st pair of gnathopoda having 

 the carpus as long as the propodos, furnished with a thick bunch 

 of hairs upon the inferior margin ; propodos ovate, ciliated, palm 

 imperfectly defined ; dactylos short. Second pair of gnathopoda 

 much larger than the fii^st, having the meros inferiorly produced 

 anteriorly to a point; carpus short, continuous with the propo- 

 dos ; propodos long-ovate, tapering ; palm not defined, thickly fur- 

 nished with long hairs, carrying short, distant, curved cilia upon 

 one side, the anterior portion of the palm projecting to a tubercle ; 

 dactylos long, arcuate. First two pairs of pereiopoda subequal ; 

 third pah' short ; fourth long, having the basos abruptly narrowing 

 posteriorly towards the distal extremity, the inferior half of the 

 margin being developed into a comb-like fringe ; dactylos, as in 

 all the pereiopoda, distinctly unguiculate ; fifth pair longer than 

 the foiu'th. Pleopoda subequal, the sixth paii- being slightly the 

 longest. Telson double. 



The female differs from the male in having the second pair of gna- 

 thopoda somewhat smaller and less hairy. 



Length : male, -^-ths of an inch ; female somewhat smaller. 



Hab. New Guinea. 



This species is described and figured from an example in the col- 

 lection entrusted to me for examination from the Museum of the 

 Jai'din des Plantes. 



i 



