174 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



legs brown, the long hairs on fore femora and tibiae white. Wings 

 light brown, the fore wings woolly toward the base; costa shaded 

 with white to across the cell and an outer straight white line across 

 wing; veins narrowly dark; two dark-brown spots at extreme base of 

 wing. Hind wings without marks. Expanse 30 mm. 



Two males, Castro, Parana, Brazil (Schaus collection). 

 Type: No. 13114, U. S. National Museum. 

 These specimens have been determined as the males of 

 Megalopyge vipera Schaus, but incorrectly so. 



Genus PODALIA Walker. 

 Podalia Walker, Cat. Lep. Het. Brit. Mus., vii, 1714, 1856; type, 



vesta Walker. 

 Gerontia Schaus, Trans. Am. Ent. Soc., xxx, 139, 1904; type, 



omayena Schaus. 

 Thoscora Schaus, Trans, Am. Ent. Soc., xxx, 140, 1904; type 



brugea Schaus. 



The genus divides into two sections, those with white, 

 spotted wings (typical) and those with brown wings and 

 yellow abdomen {Gerontia). The peculiar venation of Thos- 

 Schaus is not constant. 



Podalia orsilochus Cramer. 



Bombyx orsilochus Cramer, Pap. Exot., pi. xli, fig. D, 1775. 

 Podalia vesta Walker, Cat. Lep. Het. Brit. Mus., vii, 1714, 1856. 

 Podalia dorsimacula Walker, Cat. Lep. Het. Brit. Mus., vii, 



1717, 1856. 

 Megalopyge orsilochus Kirby, Cat. Lep. Het., 845, 1892. 



The true orsilochus, from the Guianas, has black hind 

 wings in the male. The southern race, vesta Walker, has 

 a submarginal white band of sagittate spots. 



Podalia major Schaus. 



Podalia major Schaus, Proc. U. S. Nat. Mus., xxix, 338, 1905. 



Very close to orsilochus and perhaps a race of it, yet the 

 hind wings are entirely white, except for the area on the inner 

 margin below the cell, while the markings of the fore wings 

 are smoky gray. The markings, however, are identical with 

 those of orsilochus. 



Podalia albescens Schaus. 



Megalopyge albescens Schaus, Journ. N. Y. Ent. Soc., viii, 229, 

 1900. 



This is clearly a derivative of orsilochus, but distinct, the 

 wings being less produced and the antennae testaceous instead 

 of black, besides the differences in coloration of the wings. 



