274 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



veins 2-5, running in along vein 2 faintly, forming a sinus, and below 

 it a tooth on submedian; orbicular punctiform, reniform lunate. 

 Hind wing with a spot at end of cell; mesial line similar to the outer 

 of fore wing. Expanse, 24-26 mm. 



Coty pes. —Three females. No. 16150, U.S.N.M.; Corozal, Canal 

 Zone, April, 1911 (Busck); La Chorrera, May, 1912 (Busck); Trini- 

 dad Kiver, June, 1912 (Busck). Also 13 specimens from French and 

 Dutch Guianas and three from Aroa, Venezuela (Schaus collection). 

 One of the latter is labeled " Wachyzancla segrotalis Zell. $ " by Sir 

 G. F. Hampson, but the palpi do not seem to me to agree with those 

 of Pachyzaiida. The specimen examined by Sir George has the palpi 

 broken, but anyway the specimen is very much too large for the 

 female of segrotalis, of which I have many of the same size as males. 

 The present species is near 8. silicalis Guenee, but the markings darker 

 and more clearly written, the costa also dark. 



SYLEPTA LATICALIS Lederer. 



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



SYLEPTA CALANTICALIS Druce. 



2. Taoga Island, February, 1912 (Busck); Alhajuelo, April 1911 

 (Busck). ^ 



SYLEPTA EXCELSALIS Schaus. 



1. Trinidad River, March, 1912 (Busck). 



PILETOSOMA NOVALIS Walker. 



2. Trinidad River, March, 1912 (Busck); La Chorrera, May, 1912 

 (Busck). 



Two entirely different insects have been under this name in the 

 collection, one from Ecuador, identified by Schaus, the other from 

 French Guiana, identified by Hampson. The Panama specimens 

 agree with the one from French Guiana, and I have accordingly 

 accepted Hampson's identification of the species. 



PILETOSOMA TmALIS, new species. 



A little larger and broader-winged than novalis, the male antannse 

 with a thickening bearing short hairs near the middle, the anal 

 tuft very small and brush-like, inconspicuous; outer margui of 

 fore wing quite straight, with a small notch at end of submedian 

 fold. Color as in novalis and equally without markings, the darker 

 patch at anal angle of hind wing somewhat larger and a little less 

 contrasted. Expanse, 32 mm. 



Type.— Male, No. 16147, U.S.N.M.; Corozal, Canal Zone, March, 

 1911 (Busck). 



PILETOSOMA ARGOPONALIS, new species. 



Wings broad, the outer margui rounded below, without notch; 

 male antennae minutely cihate, unmodified; anal tuft large and 

 rather long, but nothing like the enormous development of this 

 structure in novalis. Bro\v'n-black with sUght bronzy reflection; 



