NO. 2050. LEPIDOPTERA OF THE PANAMA CANAL ZONE—DYAR. 165 



AGYLLA SERICEA Druce. 



23. Porto Bello, March, 1912 (Busck); Cabima, May, 1911 (Biisck); 

 LaChorrera, May, 1912 (Busck); Trinidad River, June, 1912 (Busck). 



AGYLLA NIPHOSTIBES, new species. 



Palpi ocher, blacldsh at tip. Silvery white, fore wing shining, 

 hind wing semitranskicent. Head dark gray in front, vertex white; 

 antennae ocher, shortly pectinated in the male. Thorax white. Abdo- 

 men white; anal tuft of male tinted with sordid ocher. Legs wliit- 

 ish, fore femora yellow, fore tibiae and tarsi fuscous. Costa of male 

 very narrowly and faintly ocher; of female, wliite. Expanse, 40- 

 46 mm. 



Cotypes. — Four males, one female, No. 15782, U.S.N.M.; Cabima, 

 May, 1911 (Busck). 



This falls in Agylla nivea Walker by Hampson's monograph ; ^ but 

 Walker says of nivea, " Head black above, luteous in front " and " abdo- 

 men testaceous above." Of the synonyms given by Hampson, mon- 

 oleuca Walker has "palpi fawn color;" argentea Felder has the 

 vertex of head yellow, collar shaded with purplish fuscous; virginea 

 Schaus is a small form with pale ocher vertex and collar and abdomen 

 gray doi-sally; plateada Dognin is Hke argentea Felder, but with 

 ocherous abdomen instead of white; florecilla Dognin has the vertex 

 of the head as well as the whole front and collar gray. None of the 

 described forms, therefore, agree with the one before me. I have two 

 males and three females of niphostibes also from the Guianas, col- 

 lected by Mr, Schaus. 



APISTOSLA jmOAS Hiibner. 



5. La Chorrera, May, 1912 (Busck). 



BALBURA DORSISIGNA Walker. 



1. LaChorrera, May, 1912 (Busck). 



DOLICHESIA FALSIMONLA Schaus. 



3. Cabima, May, 1911 (Busck). 



ACHROOSIA NUDA Hampson. 



5. Alliajuelo, March, 1912 (Busck); Trinidad River, March, 1912, 

 and May, 1911 (Busck). 



THYONE SIMPLEX Walker. 



37. Taboga Island, Febraary, 1912 (Busck); Trinidad River, 

 March, 1912, and June (Busck); Alliajuelo, April, 1911 (Busck); 

 Cabima, May, 1911 (Busck); La Chorrera, May, 1912 (Busck); 

 Corozal, Canal Zone, July, 1912 (J. Zetek and C. P. Crafts). 



THYONE GRISESCENS Schaus. 



13. Paraiso, Canal Zone, February, 1911 (Busck); Porto Bello, 

 March, 1912 (Busck); Trinidad River, March and June, 1912 (Busck); 

 Cabima, May, 1911 (Busck); La Chorrera, May, 1912 (Busck). 



1 Cat. Lep. Phal. Brit. Mus., vol. 2, 1900, p. 195. 



