LIOPTILUS. 51 



spot being the furthest from the apex. Cilia 

 white. 



Hind wings with their cilia white. 



Legs white; underside white, scarcely touched with 

 cinereous. 



This variety occurred in some abundance in Shasta 

 County, California, towards the end of July 1871. 

 One specimen also on Mount Shasta in August. 



VAR. /3. Head white between the antennae, brown 

 behind and in front ; palpi brownish ; antennae 

 dirty whitish. 



Fore wings white, much dusted with brown scales 

 towards the costa and on the anterior lobe ; a 

 brown spot before and slightly below the fissure ; 

 cilia white, tinged at the tips around the obso- 

 lete anal angle with pale cinereous. 



Hind wings and fringes very pale cinereous. 



Legs white, the first two pairs touched with brownish 

 on their inner sides; underside very pale brownish. 



Expanse, as of the preceding variety, 25 to 27 

 millims. 



Three specimens of this variety occurred on the 

 Siskiyou range of mountains in Southern Oregon, 

 June 25th, 1872, differing from the Californian 

 variety previously described in the brown colour of 

 the head before and behind, in the more thickly 

 dusted appearance of the fore wings, and in the 



E2 



