398 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iis 



Female genitalia: See figures (slide W.D.D, 3064). Lamella 

 antevaginalis reniform; ostium bursae simple; ductus bursae long, 

 membranous. 



Type : In the British Museum (Natural History) . 



Type locality: Rio Maroni, French Guiana. 



Distribution. French Guiana: Rio Maroni [no date]. 



This species is very closely related to hella new species; however, 

 the long, recurved, lateral aedeagal process and the short, heavy 

 setae on the ventral edge of the harpe not extending to the apex 

 readily separates the males. Since the female of hella, new species 

 is not known, it is at present impossible to compare the females. 

 However, the reniform lamella antevaginalis in the female genitalia 

 distinguishes lepidota from the other known females in the genus. 



FalcuUna hella, new species 



Figures 2e, 5; Plate 1 (fig. 6) 



Alar expanse 28 mm. 



Antenna whitish. Head whitish, slightly shaded laterally with 

 ochreous; second segment of labial palpus white, slightly shaded with 

 ochreous on outer side, white on inner side, apical segment white. 

 Legs whitish, foreleg shaded with brown. Thorax as in ochricostata. 

 Forewing with veins 7 and 8 separate; maculation as in ochricostata. 

 Hindwing as in ochricostata. 



Male genitalia: See figures (slide W.D.D. 3060, type). Uncus 

 short, recurved, blunt apically; gnathos two separate apically acute 

 arms, dorsal margin at apex serrate, with yokelike ventral connection 

 from their bases; subscaphium absent; harpe broad basally, ventral 

 edge clothed in short, heavy setae from basal third to apex; anellus 

 with four lateral lobes, ventral pair simple, setiferous, dorsal pair 

 asymmetrical, one longer, apically acute, bladelike, the other short, 

 broad, flaplike; aedeagus with a long, curved lateral process, vesica 

 clothed with tiny spines. 



Female genitaha: Unknown. 



Type: Above Obidos, Amazon, Brazil. USNM 67228. 



Distribution: Brazil: above Obidos (Sept.). 



Described from the male holotype, Sept. 10, 1920, above Obidos, 

 Amazon, Brazil. 



This species is related very closely to lepidota and a comparison 

 of distinguishing characters has been included in the discussion of 

 that species. 



