482 PALAEMON PILIMANUS. 



V. Mart. and Pal. Javanicus Heller, but sharply characte- 

 rized. 



Rostrum somewhat shorter than the peduncle of the 

 internal antennae and descending a little towards apex ; 

 upper margin scarcely convex with 9 — 13 equal and equi- 

 distant teeth , the three or four last teeth being posterior 

 to the eyes , and situated on the cephalothorax ; inferior 

 margin scarcely emarginate between the eyes , and provided 

 with one or two feeble teeth ; the rostrum is a little lon- 

 ger than half the length of the cephalothorax , and the apex 

 is entire. — Cephalothorax smooth; the small hepatical 

 spine situated not far from the antennal spine on the 

 lateral surface. The terminal segment of the abdomen 

 shorter than the lateral appendages , and provided with two 

 pairs of small spines on its surface as usually. External 

 maxillipedes comparatively very elongate , reaching beyond 

 the peduncle of the external antennae , almost to the extremity 

 of the scales. First pair of legs much longer than the 

 scale of the external antennae ; the arm reaches to the 

 extremity of the outer foot-jaws , and therefore almost to the 

 tip of the antennal scale ; fingers covered with scattered hairs. 

 Second pair of legs unequal , both in the male and in 

 the female; in the adult male the larger leg (in some 

 individuals the right , in others the left) is somewhat lon- 

 ger than the body. The arm cylindrical , thickened a httle 

 in the middle , and reaching almost to the extremity of 

 the scale of the external antennae ; carpopodite very short 

 and thickened , almost as thick as long , and rather cubical 

 in the larger leg, being half as long as the arm and the 

 palm. Hands slender and depressed, though swollen a 

 little at the base ; palms broader than the carpopodites , 

 everywhere equally broad and compressed in proportion 

 of 7 : 9 ; the palm of the great hand is somewhat longer 

 than the arm, and twice or more than twice as long as 

 the short carpopodite; the fingers of the great hand are 

 a little shorter than the palm , compressed a little , and 

 closely united to one another ; but the tips are curved , 



Notes irom the Leyden IMuseuTn. 



