106 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



inception of the ductus seminalis in the female genitalia readily 

 identifies this species. 



Lethata leucothea (Busck), new combination 



Figures 2d, 56 



Stenoma leucothea Busck, 1914, Proc. U.S. Nat. Mus., vol. 47, p. 50. 



Alar expanse 20 mm. 



Antenna light bro\vn. Head rosy ochreous; second segment of 

 labial palpus brown on outer side, pale rosy ochreous on inner side; 

 apical segment pale rosy ochreous. Legs whitish, forelegs heavUy 

 shaded with brown, mid- and hindlegs slightly shaded with brown. 

 Thorax rosy ochreous, with posteromedian ridge of raised reddish- 

 brown scales. Forewing pale ochreous gray with costa narrowly 

 brick red; dorsal edge narrowly deep ochreous; spot at end of cell 

 consisting of light yellow spot ringed with fuscous scales; outwardly 

 curved transverse fuscous line at apical third; less distinct transverse 

 fuscous line at middle; an even less distinct transverse line at basal 

 third; cilia rosy ochreous. Hindwing light ochreous shaded with 

 gray scales; cilia grayish ochreous. 



Male genitalia (slide AB, type): Uncus recurved at tip; gnathos 

 short, broad; harpe short, of approximately equal width throughout, 

 broadly rounded at apex; anellar lobes symmetrical, bluntly pointed 

 at apex; aedeagus large, robust, vesica armed with three large, heavily 

 sclerotized cornuti. 



Female genitalia : Unknown. 



Type: In the United States National Museum. 



Type locality: Trinidad Kiver, Panama. 



Distribution: Panama: Trinidad River (March). 



This species is Imown only from the type specimen. It is closest 

 to L. hovinella; however, the shape of the harpes and anellar lobes, 

 together with the number of cornuti in the aedeagus of the male 

 genitalia, serve to separate the two species. 



Lethata maculata, new species 



Figures 2e,f, 3c, 5c 



Alar expanse 24-31 mm. 



Antenna brownish. Head whitish ochreous shaded with rose; 

 second segment of labial palpus brown on outer side, whitish on inner 

 side, apical segment white on outer side, brown on inner side. Legs 

 whitish shaded with brown. Thorax deep yellow ochreous slightly 

 shaded with rose, with tuft of white-tipped gray scales posteriorly. 

 Forewing deep yellow ochreous with costa narrowly red ochreous; 



