476 PRiOCEEIDilNGS OF THE NATIONiAL MUSEUM vol. 94 



Additional specimens examined. — One male, at light, Juan Mina 

 Station, Canal Zone, April 15, 1939 (G. Fairchild) (MCZ) ; one male, 

 at light, Santa Cruz de Bravo, Terr. Quintana Eoo, Mexico, August 

 18, 1925 (A. Dampf). 



Remarks. — The Canal Zone specimen differs from the holotype only 

 in its smaller echinulate nodule at base of 10 RPi, in its slightly longer 

 sclerotic tip of 10 RPi, and in having only one "claw" on the inner 

 lobe of LCB. The Quintana Roo specimen (see figs. 124-126) may 

 prove to be at least subspecifically distinct when adequate series are 

 available. It has a slightly different head form and a less acute and 

 produced basal apodeme of the tenth tergite. The apparent differ- 

 ences in form of 10 LP, as indicated in the figures, may be due to the 

 angle from which it was viewed. 



DiLOBOCERCA, new subgenus 



Males with mandibles not curved ventrad at tips; teeth rather 

 large, well defined. Terminalia with tenth tergite apodeme usually 

 acutely produced well forward beneath ninth tergite; left tergal proc- 

 ess (10 LP) rather broad, short, apex divided into' two greatly dis- 

 similar portions, the inner portion sclerotic, elongate, talonlike, the 

 outer portion broad, spatulif orm, thin, with margins irregular ; right 

 rergal process (10 RPi) with outer margin usually sinuous; left 

 paraproct (LPPT) usually broad, short, seldom longer than HP; 

 left cercus-basipodite (LCB) with two inner lobes, the ventral one 

 usually shorter and broadly pointed, the upper lobe elongate with a 

 terminal cleft forming rather long "claws" which may at times be 

 fused together; basal segment of left cercus (LCi) usually clavate 

 distad that of right cercus with inner margin often sclerotic and 

 lobed distad ; basal foramen of right cercus often dilated and complex 

 in outline. 



Type. — OUgemhia {D'dobocerca) lohata^ new species. 



Distribution. — That of the genus OUgemhia. 



This is a very natural subgenus with species spread over a wide 

 area, and it is apparent that only a small fraction of its species are 

 known. The accompanying figures demonstrate the great similarity 

 of general structure in the terminalia but species differences will be 

 found in the form of the left tergal process and of the left cercus- 

 basipodite. Supplementing these characters of the terminalia, impor- 

 tant differences occur in size, color, and head form. In the two species 

 studied in large series {lohata and vand/ykei) the characters described 

 and figured are very constant. 



