76 CRUSTACEANS OF THE 



Notes from the Leytleu Museum, 1892, pi. 9, fig. 3 c). 

 The terminal joint is obtusely rouuded and the sides are 

 slightly concave. The sixth segment is a little longer 

 than the seventh, the straight anterior margin is just as broad 

 as the concave posterior one and measures little more than 

 two thirds of the length of the joint, so that the latter is 

 almost once and a half as long as broad. Just be- 

 hind the anterior margin, the sides of this segment slightly 

 bulge out laterally, so that it shows here its greatest breadth 

 and in the type of Berlin the sixth joint is very slightly 

 shorter than in our specimens. The antepenultimate joint 

 is a little more than half as long as the sixth and exactly 

 half as long as the posterior margin of it is broad. The 

 closely punctate abdomen of the female has the usual 

 form, the posterior border of the terminal joint is 2^1^ 

 times as broad as this joint is long. 



The chelipedes are greatly unequal in the males , but 

 subequal in the female (the younger female has lost all 

 its legs) and in all the right leg is the larger. The arms 

 project but little beyond the lateral margin of the 

 cephalothorax. The upper edge is rugose and bears, just 

 behind the constriction at its distal end, a sharp spine 

 as usual in this subgenus; in the type examined by Hil- 

 gendorf it appears less slender, but it is probably worn oö, 

 as is also the case on the larger chelipede of the youngest 

 male. The outer surface is covered with transverse rugo- 

 sities, but the lower is smooth and bears no tooth or 

 spine near the anterior margin; the anterior and the 

 ventral angle are not rounded off, as is the case in 

 Parath. spinigera. The upper surface of the carpopodites 

 is faintly rugose and appears finely punctate under a lens; 

 these joints are armed with a single stout spine at the 

 inner angle. In the adult male the larger chela, measured 

 horizontally, is just as long as the cephalothorax 

 is broad, but in the younger males one fourth shorter. 

 The fingers, measured horizontally, are as long as, but 

 never shorter than" the palm, that is almost just as 



jVotes from the Leyden Museum, \'ol. A.X.1. 



