IQ PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



length of prosome to that of urosome (in specimen shown in fig. 80) 

 about 2.39: 1, but this ratio subject to state of contraction. 



Egg sac unknown, since none of females collected was ovigerous. 



Rostrum (figs. 80, 81, 85) a conspicuous tumid snoutlike lobe 

 bluntly rounded distaUy. 



First antenna (fig. 86) 5-segmented and relatively short (about 80/i 

 in length). Lengths of segments (measured along their posterior 

 nonsetiferous margins) 21/i (25m along anterior margin), 15.5/x, 16m, 

 11.5m, and 9m, respectively. Formula for armature: 3, 10, 4 + 1 

 aesthete, 2 + 1 aesthete, and 7 + 1 aesthete. Setae with strong lateral 

 spinules, except five naked setae (one on segment 3, one on segment 

 4, and four on last segment). 



Second antenna (fig. 87) 4-segmented and much longer (about 180m 

 including claw) than first antenna. First and second segments 

 rather large and each with an inner barbed seta. Third and fourth 

 segments smaller, third with three inner barbed setae, fourth (fig. 88) 

 ornamented with five rather hyaline spinules and a short row of 

 minute spinules, and bearing a terminal claw 28m in length and only 

 slightly recurved. External to base of second antenna and behind 

 base of first antenna a prominent lobe (see figs. 81, 94). 



Labrum (fig. 89) with posteroventral margin forming two lobes. 



Mandible (fig. 90) with inner margin of basal region having proxi- 

 mally a prominent finger-like extension (directed posteriorly) and 

 distally a row of small dentations; disto-inner margin of basal region 

 with a row of moderately long spinules. Lash relatively short and 

 not finely attenuated, with serrated margins. Paragnath (fig. 89) a 

 small lobe bearing hairs distally. Fust maxilla (fig. 91) a single 

 small segment with two terminal barbed setae. Second maxilla (fig. 

 92) 2-segmented, first segment unarmed, second with two barbed 

 elements and extended to form a gladiate blade with short stout 

 teeth along one edge. Maxilliped (fig. 93) 3-segmented, first segment 

 unarmed, second segment with two spinulose elements, and third 

 with one spinulose element and terminating in a spinulose spiniform 

 process. 



Ai"ea between maxillipeds and first pair of legs (fig. 94) not pro- 

 tuberant. 



Legs 1-4 much modified. Legs 1 and 2 (figs. 95, 96) with similar 

 intercoxal plates, protopods, and 2-segmented rami. In leg 1 termi- 

 nal spine on exopod with a few inner serrations, and anterior surface 

 of basis near insertion of endopod having a row of small spinules; 

 these features absent in leg 2. Spines on both legs obtuse. 



Leg 3 (fig. 97) reduced to two unequal setae, inner 7m, outer 16m in 

 length. Leg 4 (fig. 98) a single seta 16m long. These two legs 

 lacking intercoxal plates. 



