142 THE BUTTERFLIES OF THE WEST COAST 



more northern habitat. The green of underside occurs in rounded 

 spots, rather than in lines and stripes, as in the three green 

 species before mentioned. 



Bischoffi was first taken at or near Sitka, but I did not see one 

 while I was there, in July, though I looked for some. Probably 

 it was too early in the season. 



142. Argynnis Montivaga. 



Plate XVI ; Figures 142, a, b. 



Fig. 142, Male, Truckee, Cal., July, 1893 ; Author. 



a, Male, underside, Truckee, Cal, July, 1893; 



Author. 



b. Female, Truckee, Cal., July, 1893 ; Author. 

 Montivaga is a mountain butterfly, inhabiting the slopes and 



low»r heights of the Sierra Nevadas, particularly on the eastern 

 side, and is found at an elevation of nearly 8,000 feet, though its 

 favorite habitat is lower down the slopes. It is very abundant in- 

 deed in some places. 



143. Argynnis Arge. Not elsewhere illustrated. 

 Plate XVII ; Figures 143, a, b. 



Fig. 143, Male, Truckee, Cal., July, 1892; Author. 



a, Male, underside, Truckee, Cal., July, 1892; 



Author. 



b, Female, Truckee, Cal., July, 1892 ; Author. 

 Arge was named by Strecker, who claimed to have a large num- 

 ber of them, but who, nevertheless, seemed to be in doubt some- 

 what about this form. As his writings are not readily available, 

 I will quote his remarks: "Smaller than Eurynome; expanse i]^ 

 to I ^ inches ; more red in color ; sometimes mistaken for Mon- 

 tivaga; may be a Pacific coast variety of Eurynome. Beneath, 

 the fore wings are tinged with red, except along costa; some- 

 times three or four marginal lunules nearest apex are silvered, 

 oftener not. Hind wings beneath are reddish-buff, palest be- 

 tween the marginal lunules and the last row of silver spots, but 

 nowhere dark; spots comparatively smaller than in Eurynome, 

 all silvered, but not as heavily as in Eurynome ; no tinge of green 

 whatever in any example." 



Now in all my experience I have never taken an Argynnid as 

 small as i^ inch in expanse. As to Eurynome, the green of the 

 hind wings beneath is one of the cardinal features, and when 



