128 LEPIDOPTERA. 



Northern Africa ; and in North America through Canada, 

 the Hudson's Bay Territory and California. Indeed, the 

 form known as P. oil, which is probably only a darker variety 

 with a smaller Y, is found in Colorado, Oregon, Texas, 

 Florida, Missouri, Nebraska, and even New York. Although 

 so widely distributed, the range of the present species seems 

 to be wholly on the north side of the equatorial regions ; 

 among vast numbers of insects collected promiscuously for 

 me in South Africa not a single specimen of this species has 

 been received ; its place there seems to be taken by P. circum- 

 Hexa, P. criosoma, and other allied species. 



10. P. ni, Hilb. — Expanse 1\ inch. Fore wings short, 

 broad behind, rosy-grey, or yellow-grey, much marbled with 

 dai'k brown ; the central Y silvery- white, broad and complete. 

 Hind wings pale smoky-brown shading darker behind. 

 Lateral tufts of the abdomen yellow-brown. 



Antennae of the male simple, almost naked, pale brown ; 

 eyes naked, black-brown, lashes brown, distinct but nearly 

 prostrate, palpi short, broadly tufted, pale brown clouded 

 with darker; head pale brown, a broad tuft of long scales 

 flattened down lies, pointed forward, between the antennae ; 

 collar light brown, faintly barred twice with darker and 

 whiter in alternate bands ; remainder of the thorax grey- 

 brown dusted with dark brown and white ; crests prominent, 

 whitish, the long scales thickened and flattened at their tips, 

 which are dark brown ; fascicles long, sinoky-white ; abdomen 

 brown, its basal portion covered with long smoky-white hair- 

 scales, the dorsal ridge ornamented with three large pale 

 brown crests, which are barred and tipped with dark brown ; 

 these are somewhat fugitive ; lateral tufts tawny or yellow- 

 brown ; anal tuft grey-brown. Fore wings rather triangular, 

 costa straight to near the apex, which is bluntly rounded, 

 almost angulated ; hind margin rather straight, but curved 

 off at the anal angle and a little crennlated ; dorsal margin 

 concave and gracefully curved ; colour grey-brown shaded 



