560 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Male genitalia. — Vinculum typical. Ventral aspect: in form of 

 moderately sclerotized, U-shaped pouch receiving and supporting 

 bases of harpes. I^ateral aspect: narrowing dorsocaudad to point 

 of articulation with lateral arm of tegumen, 



Tegumen with lateral arm quite broad, gradually narrowing 

 cephalad to point of articulation with vinculum, approximate ventral 

 h&U punctate, dorsal half glabrous, ventral margin heavily sclerotized 

 and sinuate, dorsal margin moderately sclerotized and subUnear; 

 dorsal area broad, glabrous, rather weakly sclerotized but not emar- 

 ginate mesad. 



Harpe simple, shghtly variable. Lateral aspect: width medium, 

 sublinear or with apical half curving somewhat ventrad; costa and 

 sacculus fused, comprising approximate basal half of harpe, broadest 

 in apical portion at point of attachment of arm of transtilla, gradually 

 narrowing basad to rather narrowly rounded basal extremity, dorsal 

 margin very heavily sclerotized; glabrous except for heavily punc- 

 tate and setose, considerably expanded, subdigitate, caudal portion 

 of sacculus ; cucullus partially separated from costa and sacculus by 

 dorsal constriction and ventral area of reduced sclerotization, com- 

 prising apical half of harpe, commonly curving somewhat ventrad 

 and mesad, markedly constricted dorsad near base, major apical 

 portion rather broad, heavily punctate and setose ectad and entad 

 except for glabrous dorsal portion of basal two-thirds, apex broadly 

 and evenly to irregularly rounded. 



Transtilla with arm approximately one-third as long as harpe, 

 slender, Hnear to sublinear, well sclerotized, glabrous, rather closely 

 subparallel with dorsal margin of costa, terminating considerably 

 distad of basal extremity of harpe, apex shghtly expanded and rounded. 



Uncus prominently bifid, somewhat variable but very distinctive. 

 Dorsal aspect: base large, heavily punctate and setose, partially set 

 off from tegumen by lateral areas of reduced sclerotization; lateral 

 margins well sclerotized, sublinear to sinuate, converging distad; 

 angle of bifurcation narrowly rounded to acute; furcae with basal 

 portions approximate, broad, strongly narrowing distad, heavily punc- 

 tate and setose. Lateral aspect: furcae abruptly du-ected ventrad to 

 ventrocephalad at angle of 90 degrees or more, broadly expanded, 

 laterally flattened, subtriangular, punctate and setose, closely sub- 

 parallel to weakly divergent ventrad, gradually narrowing to acute 

 apices. 



Gnathos pau-ed, curving ventrocaudad, lateral and apical portions 

 well sclerotized, large mesobasal portion membranous; arms flattened, 

 densely scobinate entad, apical portions overlapping, apices rather 

 narrowly rounded. 



Anellus membranous, unarmed, juxta absent. 



