16 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



longer dorsal bristle also provided with wreaths of long hairs near 

 middle. Fourth joint with 2 dorsal bristles, each with wreaths of 

 long hairs, and 4 long ventral bristles subdistally; bristles bare or with 

 short hau's distally. Fifth joint, inferred to be inserted ventrally 

 between 4th and 6th joints, bearing sensory bristle with broad base 

 and numerous filaments. Sixth joint with single dorsal bristle 

 distally having short spines. End joint with 1 short dorsal bristle 

 with short spines, 2 slender bristles with filaments, 2 bristles with 

 filaments, and usual long, stout c- and f-bristles. 



Second antenna (figs. Qf,g): Protopodite triangular without trans- 

 parent rim (fig. 6g). Exopodite: first joint elongate; 2nd joint 

 about Yi length of 1st; 3rd joint about % length of 1st; distal margins 

 of joints 2-8 with comb of short spines; basal spines not observed. 

 Fkst joint without bristle; bristle of 2nd joint about % length of 3rd 

 joint (fig. 6^), bearing short marginal spines. Bristles of joints 3-8 

 bearing natatory hairs, without marginal spines. End joint with 4 

 stout bristles with natatory hairs and 2 short slender bristles without 

 hairs. Endopodite (fig. 6/) 3-jointed; 1st joint with 5 bare short 

 bristles and 1 long distal bristle with wreaths of long hau's near 

 middle and short spines distally; 2nd joint elongate, with 2 bristles near 

 middle, bristles provided with short spines; 3rd elongate with 1 

 proximal and 1 distal short bristle, tip with serrated ridges (tip of 

 appendage partly obscured with the result that presence or absence 

 of spine at tip could not be ascertained). 



Mandible: No coxale endite observed. Basale: ventral margin with 

 4 short slender bristles and 2 long bristles with wreaths of long haii-s 

 and short spines distally. Dorsal margin with 3 bristles. Medial 

 siu"face with about 5 short bristles proximally near ventral corner and 

 1 longer bristle near ventral margin at middle of joint. Exopodite 

 reaching middle of 1st endopodite joint, with 2 subequal terminal 

 bristles; tip of joint with blimt hirsute process. Endopodite: first 

 joint with 1 short and 3 long ventral bristles distally. Second joint of 

 anterior margin with proximal group of 3 and distal group of 5 bristles; 

 posterior margin with 2 distal spinous bristles and 1 short annidated 

 bristle and 2 clawlike subterminal bristles. End joint with 2 large 

 subequal claws, 1 short posterior claw, and 3 annulated bristles. Medial 

 surface of basale and 1st and 2nd joints of endopodite provided with 

 groups of hairs. 



Maxilla: Very small. It seems to have a structure typical of the 

 genus, but because of its small size I have not attempted to describe 

 it fully. 



