P TEROPHORID^— OX \ 'P TIL US. 369 



4. O. pilosellae, Zdl. — Expanse over § to f inch (1G-Ii» 

 mm.). Fore wings long, the tips sharph' pointed, very little 

 curved down ; chestnut with a white band before the middle 

 and two others across the lobes. Hind wings dark red- 

 brown with darker cilia and a blunt tooth on the hind 

 lobe. 



Antennae of the male short, simple, brown, closely barred 

 with white ; palpi slender, sharply pointed, slightly drooping, 

 dark brown edged with white : face dark chocolate ; head 

 and thorax dull chocolate dusted with paler ; abdomen 

 yellow-brown with broad white strijies from the base and 

 short oblique silvery white streaks down the sides. Fore 

 wings narrow, the costa rather flatly arched beyond the 

 middle, apex of each lobe pointed, slightly drooping, and 

 very graceful ; hind margin of hinder lobes excavated ; 

 dorsal margin very flatly concave, and hardly toothed ; 

 colour chestnut or pale chocolate; before the middle is an 

 oblique white transverse band, sometimes very obscure : base 

 of the fissure edged by a tawny-white cloud ; beyond this is 

 a sharply defined yellowish-white stripe crossing both lobes 

 and not strongly angulated ; beyond this two slender white 

 streaks form a partial similar stripe, but each throws off 

 a white streak to the tip of its lobe ; cilia of the front 

 lobe brown, of the other white. Hind wings long, tri-cleft 

 to the base, dark golden brown, with much darker smokv- 

 brown cilia, except that the hinder lobe is furnished with 

 white dorsal cilia to the tip, but interrupted by a broad 

 flat triangular brown tuft. Legs exceedingly pretty, 

 long and very thin, with long spurs, red-brown with short 

 shining white spaces. Female similar but with a thicker 

 abdomen. 



Undei'side like the ujiper, except that on the first lobe of 

 the hind wings is a bright white patch. 



On the wiug in July and August. 



Larv.\ yellowish-white, with tall bri.stly raised dots, and 



VOL. IX. 2 A 



