4 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Legs 1-4 (figs. 19-22) with trimerous rami. Armature as follows 

 (Roman numerals indicating spines, Arabic numerals setae) : 



Pi protopod 0-1 1-0 



P 2 protopod 0-1 1-0 



P 3 protopod 0-1 1-0 



P 4 protopod 0-1 1-0 



Inner margin of basis ornamented with spinules in leg 1, with hairs 

 in legs 2-4. Leg 4 with last segment of exopod most often with the 

 formula 11,1,5 (in seven females), but occasionally 111,1,5 (in two 

 females) or 11,1,5 and 111,1,5 (in two females where formula differed 

 on opposite legs). Last segment of endopod in leg 4 measuring 74^ 

 x 28/i in greatest dimensions, with two terminal fringed spines 64m 

 (outer) and 79m (inner). 



Leg 5 (fig. 23) with its free segment 52m x 19m; ornamented with few 

 minute distal outer spinules and armed with a terminal naked seta 

 77 fx and a subterminal inner lamellate spine 33m with blunt tip. Seta 

 on body near insertion of free segment 36m and naked. 



Leg 6 probably represented by small seta and spiniform process 

 near attachment of egg sac (see fig. 6) . 



Color in life in reflected light transparent to slightly amber, eye red. 



Male. — Body (figs. 24, 25) slender as in the female. Length (without 

 setae on the caudal rami) 1.44 mm (1.22-1.54 mm) and greatest width 

 0.44 mm (0.38-0.50 mm), based on 10 specimens measured in lactic 

 acid. Ratio of length to width of prosome 1.8:1. 



Segment of leg 5 (fig. 26) 52m x 109ju. Between this segment and 

 genital segment no ventral intersegmental sclerite. Genital segment 

 only slightly longer than wide, 255/z x 234m, with lateral margins 

 gently rounded in dorsal view. Four postgenital segments 52/x x 99m, 

 55^ x 94ju, 49m x 84m, and 88m x 81m, from anterior to posterior. 



Caudal ramus resembling that of female, 114m x 29m. 



Surfaces of body ornamented with few hairs (fig. 24) as in female. 

 Ratio of length of prosome to that of urosome 1.2:1. 



Rostrum like that of female. 



First antenna (fig. 27) resembling that of female, but with three 

 aesthetes added, so that the formula is 4, 13 + 2 aesthetes, 6, 3 + 1 

 aesthete, 4+1 aesthete, 2 + 1 aesthete, and 7 + 1 aesthete. Second 

 antenna (fig. 28) similar to that of female, but with four elements on 

 third segment and with small spinules along inner edge of second 

 segment. 



