CRUSTACEA — WIIITELEGGE. 



223 



Second and third pairs of legs similar, having th(i basos joint 

 one-fifth longer than tlic ischium and about the same broader. 

 Merus one-fourth shorter than the carpus, inferior border straight, 

 superior oblique and evenly curved, distal margin concave, with 

 a few distally situated setio. Carpus and propodus similar in 

 shape to that of the first, but a little less in size, and the lobe on 

 the palm is wanting. Palmar border armed with eight or nine 

 spines, each of which is indistinctly serrated anteriorly and bears 

 an accessory spinule posteriorly. 



Fourtli to seventh pairs of legs dififering little except in length, 

 the last pair being shorter; all the joints are very similar and 

 subequal in length; the inferior margin of the carpus is armed 

 with four and the pi'opodus with five spines, which are structu- 

 rally like those on the second and third legs. 



First pair of pleopoda large, partially concealing the rest ; 

 outer ramus less than three times as long as broad, almost of 

 equal width in the basal two-thirds, thence converging rapidly 

 on the outer margin to a point which bears numerous setse ; inner 



ramus narrow, a little shorter than 

 the outer, broader at the apex and 

 base than in the middle, the distal 

 third margined with setse. 



First Pleopod. 

 Pig. 18e. 



Second Pleopod. 

 Fig. 18/. 



Second and succeeding pairs of pleopoda one-fourth to one-fifth 

 shorter than the first; outer ramus three times as long as broad, 

 slightly tapering, margined with a few setse; inner ramus shorter 

 than the outer, involute and tube-like; the sides almost in contact 



