6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 122 



setae 5ju and 8ju in length. Three postgenital segments 50^ x 55ju, 

 39m X 48ju, and 50/i x 47^ from anterior to posterior. Anal segment 

 with a row of minute spinules along its posteroventral margin on each 

 side. 



Caudal ramus (fig. 28) elongated, 73n x 22/i, about 3.3 times longer 

 than wide. Outer lateral seta 88^ and naked; outermost terminal 

 seta 91m and naked; innermost terminal seta 112^ with inner 

 hairs proximally. Two long median terminal setae 255m (inner) 

 and 203m (outer) with lateral spinules in their midregions; these 

 two setae inserted between dorsal (smooth) and ventral (with a 

 row of minute spinules) flaps. Dorsal pedicellate seta 57m and naked. 

 Dorsal surface of ramus with scattered hairs. 



Dorsal surface of prosome and urosome with few hairs (as in figs. 

 25, 26); ventral surface of urosome almost devoid of ornamentation. 

 Ratio of length of prosome to that of urosome 1.85:1. 



Egg sac (fig. 25) about 278m x 170m, containing a relatively small 

 number of large eggs (five-seven), each egg about 92m in average 

 diameter. 



Rostral area (fig. 29) not well developed, without a definite postero- 

 ventral margin. 



First antenna (fig. 30) slender (2S0m in length) and 7-segmented, 

 with sclerite on third segment suggesting an intercalary segment 

 weakly developed. Lengths of segments (measured along their 

 posterior nonsetiferous margins) 28m (44m along anterior margin), 

 99m, 28m, 52m, 28m, 23m, and 11m respectively. Formula for armature, 

 as in other species of Lichomolgus, 4, 13 (5 + 8), 6, 3, 4+1 aesthete, 

 2+1 aesthete, and 7+1 aesthete. All setae naked. 



Second antenna (fig. 31) 4-segmented, slender, and elongated 

 (208m in length). Outer edge of penultimate segment 52m in length, 

 and that of last segment 21m. Armature 1, 1, 3, and I, 1. All setae 

 small and naked; terminal claw 28m along its axis. Row of slender 

 spinules on inner surface of second segment distal to seta. 



Labrum (fig. 32) with two posteroventral lobes. 



Mandible (fig. 33) with proximal region constricted, a narrow 

 waist separating basal and distal parts. That part distal to waist 

 having on its inner side a prominent elongated posteriorly directed 

 process followed by a row of minute blunt hyaline spinules; and 

 on its outer side a bilobed margin with setules. Flagellum moderately 

 long with lateral spinules. Paragnath (fig. 37) a prominent well- 

 sclerotized lobe without visible ornamentation but with its distal 

 surface slightly wrinkled. First maxilla (fig. 34) with 3 terminal 

 elements. Second maxilla (fig. 35) 2-segmented. First segment 

 unornamented. Second segment having on its outer (ventral) 

 margin a small proximal setule followed by a seta and on its inner 



