CRUSTACEA — WHITELEGGE. 



253 



BODT VIEWED FROM ABOVE. 



Fis. 25a. 



third sliortcr than the first setjment of tlio poraeoii ; the latter 

 is about oiio-third loiif;;er than th(^ 

 second or fourth ; the third is 

 equal to the fifth ; the sixth and 

 seventh are short, and subequal. 

 Pleon a little longer than the six 

 preceding segments, penultimate 

 segment with the lateral sutural 

 lines well defined. Ultimate seg- 

 ment large, strongly convex and 

 subacute at the extremity. First 

 epiraeral process long, and pro- 

 duced in front of the eye, second 

 to fourth acute, fifth truncated, 

 sixth and seventh rounded ; side 

 plates of the pleon broadly rounded. 



Ej'es rather prominent and 

 lateral. 



First antennae separated at their 

 bases by a small process of the 

 front, the peduncle has the basal 

 pair of joints dilated, the third 

 joint is slender and nearly twice 

 as long as the second. Flagellum 

 a little shorter than the peduncle, 



consisting of eighteen joints ; the fifth joint is rather stouter and 

 longer than those preceding or following. Second antennae with 

 the peduncle and flagellum equal in length ; the first two joints 

 of the former are short and equal, the third and fourth are each 

 almost equal to the first and second combined ; fii'st and third 

 joints of the flagellum subequal, second joint longer than the 

 fifth, the remaining twelve joints are of equal length. 



Mandibles angularly bent in their upper third, cutting edge 

 unidentate obtuse with a bifid tooth below, subtended by a few 

 curved denticulated spines, molar tubercle prominent, with the 

 lower border acute ; palp with three subequal joints. First 

 luaxillse with the lobes of equal length, the inner narrow and 

 tipped with four pectinated sette, the outer broad, curved and 

 surmounted with about ten denticulated spines. Inner branch 

 of the second maxillae rather longer and broader than either of 

 the two outer lobes. Palp of maxillipedes short, the superior 

 lobes well developed, third joint about equal in length to the 

 width of the first. Legs increasing in length as the end of the 

 body is approached. The fourth, fifth, and sixth joints of the 

 first and last pairs are armed inferiorly with long spines, the 

 same joints in the intermediate pairs have their inferior margins 

 densely hairy. The seventh joint is comparatively elongate, and 

 terminates in two unequal spines ; the larger spine is situated at 



