84 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



lateral plates of second pedigerous segment. Third pedigerous seg- 

 ment with bilobed, platelike extension overlapping fourth pedigerous 

 segment, 2 minute denticulations medially, just anterior to sinus 

 between lobes of extension. Fourth pedigerous segment also a narrow 

 band, almost completely covered by plates of second and third pedig- 

 erous segments, with bilobed plate, similar to that of third pedigerous 

 segment, projecting posteriorly over anterior half of genital segment, 

 pair of minute denticulations present just anterior to V-shaped con- 

 cavity at junction of lobes of plate. 



Male second, third and fourth pedigerous segments (fig. 106) free, 

 second pedigerous segment narrow, with posterolaterally projecting 

 extensions that bear filmy membrane across distal and inner lateral 

 margins. Posterodorsal surface of segment, between extensions, with 

 4 denticulations. Third pedigerous segment narrow, posterior margin 

 flatly convex, posterodorsal surface with 2 denticulations. Fourth 

 pedigerous segment slightly less than twice as wide as long, lateral 

 surfaces winglike, median posterior margin convex, posterodorsal 

 surface with 2 denticulations. 



Female genital segment (fig. lOd) roughly heart-shaped, wider 

 anteriorly than posteriorly, posterior end with deep, U-shaped sinus 

 dorsally. Sinus forming place of attachment of large, obovate anal 

 lamina extending posteriorly well past posterior end of abdomen, 

 almost to distal end of caudal rami. Lateral margins of sinus formed 

 by lobate projections of genital segment that bear single denticula- 

 tion from posterior dorsal surface. Posterior ventral sm^face of 

 genital segment irregular, with several knoblike regions of heavy 

 sclerotization medially. 



Male genital segment (fig. lOe) broadest anteriorly, anterior margin 

 convex; posterior lateral regions extending posteriorly past median 

 posterior margin as 2 sharply rounded lobes with minute irregularities 

 on inner margin, dorsal median posterior margin overlapping fu'st 

 abdominal segment. Fifth legs (fig. 10/) small, projecting laterally 

 and posteriorly from genital segment margin, bearing spinule and 3 

 setules distally. SLxth leg (fig. 1 Og) visible only as small spinule and 

 single, plumose setule on padlike swelling of ventral genital segment 

 surface just anterior and medial to lobate projections of segment. 



Female abdomen (fig. lOd) hregular, narrower anteriorly and pos- 

 teriorly than medially, at heavily sclerotized articulation surface of 

 caudal rami. Abdomen extending ventrally past anal opening and 

 caudal rami bases as plate-shaped projection with flatly rounded 

 posterior margin. Caudal rami strongly sclerotized, elongate, ter- 

 minating in sharp, spiniform process and giving rise to 2 additional 

 spiniform processes on dorsal surface, in distal half of rami. 



Male abdomen (fig. lOg) 2-segmented, first segment shorter than 



