79 



wards' Collection were collected at a later date in Colorado, probably 

 by Morrison, and cannot be considered to be more than typical; Ed- 

 wards' figure (Butt. I, PI. 28) should be sufficient to identify the 

 species ; typical specimens with the basal area of hind wings to sec- 

 ond row of silver spots deep reddish-brown are taken in the canons 

 near Denver, Colo. Specimens from Glenwood Spgs., Colo, and 

 Southern Utah are apparently intermediate between halcyonc Edw. 

 and snyderi Skin, some of the 5 's being scarcely distinguishable from 

 snyderi 2 's, but in general they show more ruddy suffusion on the 

 underside of secondaries, typical snyderi being very pale greenish. We 

 imagine that the form of the Sierra Mts., Calif, which is generally 

 known as coronis (Wright, 1. c. PI. XIV, Fig. 126) and which seems 

 to extend along the whole range into Oregon is a race of snyderi rather 

 smaller than typical specimens but otherwise with no marked points 

 of distinction ; it is apparently rather common around Quincy in Plumas 

 Co., Calif. ; our series, mostly $ 's, shows a great deal of variation in 

 the color of the underside of secondaries, from pale greenish to rather 

 bright pinkish-brown. 



A. atossa Edw. 



We imagine this will prove to be a rare unsilvered form of semi- 

 ramis Edw. with the upper side paler and with reduced markings. 

 This latter species also flies at Tehachapi, the type locality of atossa, 

 and we have specimens of both forms before us ; the general wing 

 shape of both sexes and type of markings certainly points to a very 

 close relationship between the two. Adiaste Behr. (adiante Bdv.) is 

 a third species that by its reduced maculation on upper side shows 

 close affinity to semiramis Edw. and may prove to be a northern un- 

 silvered race ; the fact that a form like atossa occasionally occurs with 

 typical semiramis would certainly support this view as the under sides 

 of the secondaries in atossa and adiaste are strikingly similar. 



A. rupestris Behr. 



The types in the Strecker Coll. agree with the specimens figured 

 by Edwards (1. c. II, PI. VII, Argynnis). Dr. McDunnough has taken 

 the species sparingly in the Upper Sacramento Valley in several local- 

 ities north of Dunsmuir but the species is very local and hard to cap- 

 ture ; it occurs earlier in the season than any of the other Argynnids 

 taken in the same neighborhood, flying during the early part of June ; 

 occasional partially silvered specimens are found. Wright's figure 



