362 PROCEEDINaS OF THE NATIONAL MUSEUM. vol. xxix. 



Genus SIBINE HerricJn-Schaeffer. 



Siblne Hekricii-Schaepfek, Ausser. Schinett., I, 1855, p. 7 

 Sihhie Dyak, Journ. N. Y. Ent. Soc, VI, 1898, p. 288. 



SIBINE VIDUA Sepp. 



Dialinm rldmi Sepp, Sarin. Vlind., I, 1828, pi. vi. 

 Nyssla faviosa Walker, Cat. Brit. Mus., V, 1855, p. 1134. 

 Sihine vidua Dyar, Ann. N. Y. Acad. Sci., VIII, 1894, p. 216. 

 Sibiue vidua By AR, Can. P]nt., XXIX, 1897, p. 77. 



Locality. — Dutch Guiana . 



SIBINE NESEA Stoll. 



Bombyx nesea Stoll, Pap. Exot., IV, 1781, pi. cccv, tig. C 

 Sibhte nemi Kirby, Cat. Lep. Het., 1892, p. 539. 



Locality. — Dutch Guiana. 



SIBINE HORRIDA, new species. 



Large, the abdomen of the male far exceeding the hind wings. 

 Body above and legs dark red-brown, shading to red. Fore wings 

 dark red -brown, all the disk semitranslucent, of raised scales between 

 the dark brown veins. A slight red apical shade and one below 

 median vein and vein 2, dark, not well contrasted. Two subapical 

 yellow dots, small or obsolete; a tiny dot on submedian fold before 

 origin of vein 2. Hind wings dark red-l)rown, the space between the 

 discal nervules nearly to margin transparent red-gray, of raised scales. 



The female is larger and lacks the raised scales, but has the dark 

 veins of fore wing. 



Expanse. — Male, 45 mm.; female, 56 mm. 



Localities. — One male in the British Museum from Panama; two 

 males, one female in the collection of M. Paul Dognin from Paramba, 

 Ecuador (1,050 meters, Rosenberg); San Salvador, Central America; 

 14 males in the Schaus collection from St. Jean and 100 miles up the 

 Maroni River, French Guiana; Geklersland, Dutch Guiana; Casa Br., 

 Brazil; one male in the U. S. National Museum from Palma Sola, 

 Venezuela. 



The specimens from Panama and P^cuador I regard as typical. 

 The others diti'er in being smaller (expanse 38 to 42 mm.), the fore 

 wings more rounded at apex and the raised scales less distinct, espe- 

 cially on the hind wings. In some of the specimens they are scarcely 

 noticeable on the fore wings either, and these much resemble nesea 

 Stoll, except for the absence of the silvery line of that species. I 

 distinguish this form as variety /iltens^ new variety. 



Type.— Cat. No. 9095, U.S.N.M. 



