PLATYCHELIPUS. 103 



is clearly separated from it by the 2 -jointed branches 

 of the first foot. Only one species has yet been 

 observed. 



1. PLATYCHELIPUS LITTOEALIS, nov. sp. PL LXXIX, 



figs. 2023 ; and PL 

 LXXX, figs. 1519. 



Animal somewhat like Laophonte. Anterior antennas 

 6-jointed (PL LXXX, fig. 15) ; first two joints large 

 and thick, third equally long but only about half as 

 broad, fourth and fifth about one third as long as the 

 third, sixth equal to the third but more slender. The 

 last four joints bear numerous short spine-like setae on 

 the outer margin, besides several which are longer and 

 more hair-like. The peduncle of the first pair of feet 

 is stout and 2-jointed, the basal joint being beset with 

 numerous setae on its outer surface (fig. 16) ; the 

 second joint has two long spines on the inner and one 

 on the outer margin ; the outer branch is short and 

 2-jointed, the marginal spines slender ; inner branch 

 elongated, first joint longer than the entire outer 

 branch, second about half the length of the first and 

 terminating in a single, slightly curved, claw-like, but 

 slender seta, which is as long as the limb itself; the 

 inner branch of the second pair (fig. 17) is only 

 half as long as the outer, its two joints equal in length 

 but the second very narrow and bearing a long, slender, 

 terminal seta. The outer branches of the second, 



