12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



second segment 29m x 13m, armed with a single terminal spine 50/i in 

 length having minutely spinulose lamellae. 



Leg 5 in flat view of anterior surface as shown in figure 71, but in 

 undissected specimens appearing in dorsal view as in figure 72. Free 

 segment elongated and moderately broad, 84m x 28m, or three times 

 longer than wide; with a few small spinules on its distal anterior sur- 

 face and armed with two terminal barbed setae 77m (outer) and 94m 

 (inner) in length. Seta on body near free segment 70m long, haired 

 proximally and barbed distally. 



Leg 6 probably represented by two setae near attachment of each 

 egg sac (see fig. 54). 



Color in life in transmitted light amber in metasomal region, eye 

 red, ovary gray. 



Male. — Body (fig. 73) with prosome broadened, but a little more 

 spherical in dorsal outline than in female. Length (not including 

 setae on caudal rami) 0.91 m,m (0.85-0.97 mm) and greatest width 

 0.37 mm (0.36-0.38 mm), based on 10 specimens. Ratio of length 

 to width of prosome 1.40 : 1. 



Segment of leg 5 (fig. 74) 34m x 138m. Between this segment and 

 genital segment no ventral intersegmental sclerite. Genital segment 

 in dorsal view broadly expanded, wider than long, 146m x 20Sm. 

 Four postgenital segments 32m x 00m, 33m x 60m, 34m x 58m, and 

 33m X 62m from anterior to posterior. 



Caudal ramus resembling that of female but smaller, 68m x 26m. 



Dorsal siu'face of prosome and m-osome with scattered hairs (as in 

 figs. 73, 74) ; ventral sm-face of urosome almost without ornamenta- 

 tion. Ratio of length of prosome to that of m-osome 1.45:1. 



Rostral area like that of female. 



First antenna (fig. 75) resembling that of female but with three 

 aesthetes added. Lengths of segments (measured as in female) 

 30m (50m along anterior margin), 46m, 15m, 14m, 21m, 14m, and 13m, 

 respectively. Formula for armature: 4, 13 + 2 aesthetes, 6, 3 + 1 

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

 setae naked. 



Second antenna, labrum, mandible, paragnath, fii"st maxilla, and 

 second maxUla as in female. Maxilliped (fig. 76) elongated and 

 slender, 4-segmented, assuming that proximal part of claw represents 

 a fom'th segment. First segment unarmed, second with two naked 

 setae and a row of small blunt spines, third very short and unarmed. 

 Claw strongly recurved, 57m along its axis (including the lamella), 

 with suggestion of bipartite nature midway along its length; proximal 

 part bearing two unequal setae. 



Area between maxillipeds and first pair of legs resembling that of 

 female. Legs 1-4 as in female, without sexual dimorphism in endopod 



