60 ACIPTILUS. 



scales, especially towards the costa; a blotch of 

 these lies immediately before the base of the 

 fissure, and is connected obliquely with a similar 

 or rather darker blotch on the costa above it, 

 which is scarcely separated from another costal 

 blotch beyond it, nearer to the apex. The cilia 

 are white, except immediately beneath the ex- 

 treme apex, where they are dark ferruginous 

 brown. The outer half of the costal margin of 

 the second lobe is dark ferruginous brown, and 

 this colour runs thence through the cilia imme- 

 diately beneath the extreme apex of this lobe ; 

 all the remaining cilia are snow-white. 



Posterior wings dusted with cinereous brown ; the 

 cilia of the same colour, the third lobe only 

 being slightly paler towards the base. 



The abdomen and legs snow-white, the two anterior 

 pairs tinged with brown on their inner sides. 



Expanse 16 inillims. 



This species occurred in some abundance at and 

 near Mount Shasta, California, in August 1871. 



Aciptilus? californicus, sp. nov. 



(PLATE II. FlG. 9.) 



Capite dilute brunneo, palpis albidis brunneo striatis. 



Alis anticis dilute brunneis, lacinia anteriore albo 

 bimaculata ciliis costalibus albis, dorsalibus fuscis 



