GENUS COLIAS 119 



at all seasons, but is probably more abundant in spring and au- 

 tumn than in either summer or winter. It is a fully civilized spe- 

 cies, and frequents the cultivated alfalfa fields in preference to the 

 wild pastures of the, plains and hillsides. 

 This albino female is also unnamed. 



79. Pallida. 80. Intermedia. 81. Autumnalis. 82. Fu- 

 mosa. 

 These are names that have been given to minor varieties of the 

 Keewaydin form of Eurytheme, but I esteem the varieties as very 

 minor indeed, for Keewaydin, the basis of them all, is itself but a 

 variety, as generally considered. 



83. Colias Eriphyle. 



Plate X ; Figures 83, a, b, bb, c. 



Fig. 83, Male, Chinook, Montana, June 6, 1890 ; Author. 



a, Male, underside. East Washington, no date; from 



W. H. Edwards. 



b, Female, Chinook, Montana, June 6, 1890 ; Author, 

 bb, Female, Pueblo, Colorado, no date ; from W. H. 



Edwards. 



c, Female, underside, Pueblo, Colorado, no date ; from 



W. H. Edwards. 



Eriphyle never has any orange on the wings, but is one of the 

 clear yellow Coliads ; the key to the form is the deep Indian-yellow 

 color of the underside of hind wings, shown in the Figures a, c; 

 being about the same deep yellow as is seen on the same wing of 

 another species, Chrysomelas, on another Plate, XI, and by this 

 color the species is at once recognized. You will notice that the 

 females vary greatly in size ; the two selected are the extremes in 

 that direction, that my cabinet aiifords. 



Eriphyle is not known on the West Coast to the south of the 

 Canada line ; the type came from British Columbia, and the spe- 

 cies extends eastward through Montana, and south to Colorado; 

 but it is quite likely that it may be found plentifully enough in 

 some parts of East Washington, East Oregon, and Idaho. 



Nothing is known as to its habits, or its food-plants, except in a 

 general way, as a member of the Colias family. 



