174 THE BUTTERFLIES OF THE WEST COAST 



alike, in fact, the general tint of underside is the strongest feature 

 of difference between the species, and probably that will fail you 

 when you come to assort and identify your specimens, and there 

 will be some which you cannot assign with confidence. 



220. Grapta Silenus. 



Plate XXII ; Figures 220, a. 



Fig. 220, Female, Tacoma, Wash., June, 1890; Author. 



a. Female, underside, Portland, Oregon, June, 1890; 



Author. 

 This is a dark. Northern butterfly, dark on upper side, and al- 

 most black on the underside. It is found in Oregon and Wash- 

 ington. It frequents partially forested hillsides, and other scantily 

 wooded places. This Figure 220 a, was taken on Mt. Tabor, at 

 that time a wooded highland, where I found fine butterfly hunt- 

 ing ; but I hear that in later years the whole hilltop is cleared cfT 

 and that fine dwellings have been built there, so, of course, the 

 butterfly ground is spoiled. 



221. Grapta Oreas. 



Plate XXII; Figure 221. 



Fig. 221, Male, underside, Mt. Shasta, 1890; Author. 

 As compared with Silenus, the colors are smoother and less 

 variegated, and the tint of underside is brownish-black against 

 the blacker black of Silenus, and the silver C is smaller, and less 

 conspicuous. Oreas I have found to be rare, and in twenty years 

 I have taken but two examples, and these two were on high moun- 

 tains where one is not expected to go very often. I suppose that 

 Oreas may be called the high mountain or more northern Grapta 

 of the Coast. 



222. Grapta Chrysoptera, n. s. Not illustrated elsewhere. 

 Plate XXII ; Figures 222, b, c. 



Fig. 222, Male, Lake County, Cal, June, 1894; Author. 



b. Female, Lake County, Cal., June, 1894 ; Author. 



c. Female, underside, Mendocino County, Cal., 



June, 1894; Author. 

 Expanse, 2. to 2.50: Generally golden color; the fore wings 

 of male redder, with dark margin of medium width ; the male 



