64 ENTOMOLOGICAL SOCIETY 



Type. — No. 11363, U. S. National Museum. 



Allied to H. matheis Schaus, from which it differs in having 

 the white costal band diffusedly produced to the base of the 

 wing. 



Arachia fascis Schaus. 



This species is not a synonym of A. combusta U.S., as re- 

 ferred in Mr. Schaus's paper on the Notodontidse. It is stated 

 to be described from two males (Ent. Amer., vi, p. 47, 1890), 

 but both the types are before me and are females. The an- 

 tennae have very long pectinations, while in combusta U.S. 

 the antennae of the female are simple. Two males before me, 

 obtained from Aroa, Venezuela and Omai, British Guiana, by 

 Mr. Schaus bear the name A. meridionalis Schaus, which must 

 be considered a synonym of fascis. Mr. Schaus's remarks 

 (Tr. Am. Ent. Soc, xxx, p. 145, 1904) imply that he knew 

 both sexes of both fascis and meridionalis, but such does not 

 appear in his collection, and I consider them sexes of one 

 species. 



Urgedra, n. gen. 



Palpi porrect, exceeding the front, third joint short; antennae of the 

 male with long pectinations ; legs with the tibiae smoothly scaled ; fore 

 wings broadly trigonate, no tuft on the inner margin, the outer margin 

 entire; vein 5 from the middle of the discocellulars, 6 from the long 

 narrow areole at its basal third, 7 from the end of the areole, 8 to 10 

 stalked; hind wing rounded, veins 3 and 4 separated, 6 and 7 long- 

 stalked, 8 diverging from the cell before the middle. 



Type. — Urgedra striata Druce = Heterocamipa striata Druce 

 (Ann. Mag. Nat. Hist. (7), xvii, p. 410, 1906). 



I have before me two specimens from Carabaya, Peru, which 

 I have identified as Druce's species, as they agree well with the 

 description. They belong, however, to a new genus. 



Chadisra torresi Dognin. 



Xylophorsia torresi Dognin, Le Naturaliste, 1889, p. 82. 

 Heterocampa perilleus Schaus, Proc. Zool. Soc. Lond., 1892, p. 335. 



The type of perilleus before me is a female, not a male. I 

 cannot distinguish it specifically from Dognin's figure of tor- 

 resi. The figure has somewhat darker hind wings, but there 

 Us practically no difference in the markings. Perilleus was 

 described from Brazil, torresi from Ecuador. When the male 

 is known positively the species may be found referable to an- 

 other genus, although I have tentatively selected as the male 

 a specimen from French Guiana that was under the label 

 " Blera arecosa Druce." 



