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PROCEEDINGS OF THE NATIONAL MUSEUM 



semilunar; postscutellum slightly shorter than anterior metathoracic 

 sclerites. 



Hindwing: With 6 main veins and no intermedials; C and Sc basally 

 coalesced; R strong; M, about one-fifth length of M 2 ; single anal. 



Hindleg: Very stout femur and bell-shaped tibia of about same 

 length; 4 tarsal subsegments with first much shorter than sum of 

 terminal three. 



Aedeagus : With bulbous base narrowing abruptly, rather than taper- 

 ing, to apical tip with sharply pointed dorsal and ventral projections. 



Abdominal segment x: Slightly longer than wide, with rounded tip. 



Female, larva, and host unknown. 



Figures 45-51. — Caenocholax harleyi, new species: 45, aedeagus, lateral view; 46, hindleg; 

 47, mandible; 48, distal segment of maxillary palpus; 49, body and antenna in dorsal 

 aspect; 50, abdominal segment x; 51, right hindwing. (Figs. 45-48 use 0.1 mm scale.) 



Holotype male: Suakoko, Liberia, light trap, February 1952, 

 Blickenstaff, USNM type no. 69567. 



Discussion : This species can be separated quickly from C. bassa by 

 the shape of the aedeagus; further, the prescutum and scutellum are 

 not so widely separated, the postlumbium is narrower, and the pro- 

 portions of the mouthparts and antennal segments differ. Among the 

 retrorsus group, C. harleyi most closely resembles C. boharti (Luna de 

 Carvalho), but, apart from its much smaller size, antennal segments 

 vi and vn are different in proportion, the inner margins of the apical 

 tip of the aedeagus are slanted but not incurved, and the tibia of third 

 leg has a very straight distal margin with one slight projection rather 

 than being rounded. 



