P^DISCA. 39 



the arrow head, -would represent the point of the barb. Hind wings greyish white, with a 

 grey line along the middle of the paler cilia. 1 (^ . Expanse of wings 16 millims. 

 Shasta County, California, end of July 1871. 



Psedisca illotana. (Plate LXIX. fig. 1.) 



Head and palpi ferruginous; the latter short and obtuse, the apical joint not exposed : 

 antennse fuscous. Fore wings — with appressed fold in the male reaching to the middle of the 

 costa, slightly bent downwards towards the apex — white, streaked and speckled with pale 

 greyish fuscous ; an obliquely margined basal patch dark fuscous, streaked transversely with 

 paler greyish -fuscous wavy lines, sometimes with a bluish tinge, and reaching anteriorly 

 beyond the end of the costal fold, posteriorly beyond the first third of the dorsal margin ; 

 beyond the basal patch, coming from the costa, are some pale fuscous waved streaks, the last 

 only prolonged and extending along the apical margin ; the apex itself fuscous : parallel to 

 the lower portion of the apical margin, but separated from it by a clear space, is a row of 

 three or four black dots above the anal angle ; and between these and the basal patch are some 

 pale greyish-fuscous mottlings assuming rather the form of an obsolete median fascia. 

 2d', 1 $ . Expanse of wings 16-18 millims. 



Rouge River, Oregon, May 1872. 



This species is nearly allied to the European P. tripunctana, S. V., but differs in the 

 basal patch being less abruptly defined, the anal angle being clear white, not suffused with 

 greyish fuscous as in that species, and in the row of black 'dots being distinctly detached from 

 the extreme marginal shade. In general appearance also it is smaller and paler. 



Paedisca terracoctana. (Plate LXIX. fig. 2.) 



Head reddish ochreous, face whiter : palpi whitish ochreous, touched with greyish 

 fuscous at the tips : antennae simple. Fore wings — the costa slightly arched ; apical margin 

 scarcely oblique, slightly concave ; costal fold long and narrow, not closely appressed — whitish 

 ochreous, with bright reddish rust-coloured streaks and markings (a curved narrow spot on 

 the dorsal margin before the middle preceded by some streaks of the same colour ; an 

 oblique fascia from beyond the middle of the costa to within the anal angle, and some bright 

 streaks from the costa towards the apex) ; a blotch of sprinkled fuscous scales through the 

 oblique fascia and beyond it above the middle of the wing, and a line of sprinkled fuscous'- 

 scales along the apical margin at the base of the cilia. Hind wings greyish fuscous. 4 cj, 3 $ . 

 Expanse of wings 17 millims. 



Occurring in some abundance among Manzanita, Arctostaphylos glauca (Lindl.), Mount 

 Shasta, August 1871 ; also in Mendocino County in June. 



