ORGY A. 249 



of the female, when not nearly obsolete, bipectinate or 

 ciliate, sometimes serrate or simple. Palpi small, pilose, 

 often triarticulate. Abdomen stout, maculate. Wings en- 

 tire, deflexed, variegated in color. Frenulum conspicuous. 

 Larvae with coarse hairs, growing in clusters or tufts from 

 the tubercles in transverse rows on the body. 



ORGY A OCHS. 



Male. Body slender. Proboscis very short. Palpi short, stout, 

 very hairy ; third joint very small. Antennae very deeply pecti- 

 nated. Legs slender; hind tibiae with two rather short apical 

 spurs, or with four moderately long spurs. Wings broad. Fore 

 wings with the first, second and third inferior veins near together. 

 Hind wings extending beyond the abdomen. 



1. O. leucostigma Sm. Abb. Figured in Sm. Abb. pi. 79. 



The males have large ashen-gray wings, crossed by wavy darker 

 bands on the upper pair, on which, moreover, is a small black spot 

 near the tip, and a minute white crescent near the outer hind angle. 

 The body of the male is small and slender, with a row of little tufts 

 along the back, and the wings expand one inch and three-eighths. 

 The females are of a lighter gray color than the males, their bodies 

 are very thick, and of an oblong oval shape, and, though seemingly 

 wingless, upon close examination two little scales, or stinted wing- 

 lets, can be discovered, on each shoulder. 



Larva of a bright yellow color, sparingly clothed with long and 

 fine yellow hairs on the sides of the body, and having four short 

 and thick brush-like yellowish tufts on the back, that is on the 

 fourth and three following rings, two long black plumes or pencils 

 extending forwards from the first ring, and a single plume on top 

 of the eleventh ring. The head, and the two little retractile warts 

 on the ninth and tenth rings are coral red ; there is a narrow black 

 or brownish stripe along the top of the back, and a wider dusky 

 stripe on each side of the body. 



United States. 



HAREIS. 



2. O. antiqua Linn. Figured in most European works. 



The male is of a rust-brown color, the fore wings are crossed 

 by two deeper brown wavy streaks, and have a white crescent near 



