892 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



Genus TANADEMA, ne^A^ genus. 



Male antennfe singly pectinate, the pectinations slender, dense, 

 decreasing rapidly, the terminal half simple. Palpi upturned nearly 

 to vertex. Hind tibiae with four spurs. Wings trigonate, ample, 

 fore wings with veins 7-10 stalked, hind wings with 6 and 7 from a 

 point, normal. 



Type. — Tanadema mas Dyar. 



TANADEMA MAS, new species. 



Purple brown, glossy; palpi, vertex of head, and basal abdominal 

 tufts bright ocher. Fore wings with an obscure dark discal dot and 

 two parallel wavy lines, distinct onl}^ below vein 3. Hind wing brown. 



Expanse. — 17 to 19 mm. 



The female is like the male, but larger, with simple antenna, the 

 wings less pointed. 



Localities. — Six males, St. Jean and St. Laurent, Maroni River, 

 French Guiana; Geldersland, Surinam River, Dutch Guiana (W. 

 Schaus); 3 males in the British Museum, Rockstone, British Guiana 

 (W. J. Kaye); 1 female in the British Museum, British Guiana (C. B. 

 Roberts). 



T^/j?^.— Cat. No. 9008, U.S.N.M. 



TANADEMA FCEMINA, new species. 



Similar to mas., but smaller, of a more vivid brown, almost red, the 

 ocherous tufts of abdomen hardl}^ visible, and the outer line of fore 

 wings slenderer, more excurved around the cell and retracted below 

 vein 2. 



Expanse. — 10 nmi. 



Locality. — Two males, St. Jean, Maroni River, French Guiana. 



Type.—Q^k. No. 9009, U.S.N.M. 



TANADEMA INCONGRUA, new species. 



Fore wings sharply pointed, the costa straight to apex. Dark pur- 

 plish brown on basal area, sharply limited from middle of costa to 

 just before anal angle, the apical half of wing paler, darkened again 

 along costa and clouded marginally. Hind wings blackish brown. 



Expanse. — 20 mm. 



Localities. — One male, St. Jean, Maroni River, French Guiana (W. 

 Schaus); one male in the University Museum at Oxford. Resembles 

 the members of the next genus, but has pectinate antenna. 



Type.— C?ii. No. 9010, U.S.N.M. 



Genus DICHROMAPTERYX, new genus. 



As in Tanadema., but the male antenna? shortly uniserrate, without 

 any pectinations. 



Type. — Dichromapteryx dimidiata Dyar. 



