104 THE BUTTERFLIES OF THE WEST COAST 



amateur collector, whose name I could not learn, and presumably 

 at or near Napa. 



The two preceding figures, 56, b, are some variety of Ausonides, 

 occurring outside of the territory covered by this book, and are 

 erroneously placed before the figure of Rosa, c. 



57. Euchloe Ausonides. 



Plate VII ; Figures 56, b, 57, b, c. 



Fig. 56, Male, Central Montana, June 25, 1890; Author, 

 b, Female, Tucson, Arizona, June, 1887 ; Author. 

 57, Female, Central Montana, June 23, 1890; Author. 



b, Female, Central Montana, June, 1890; Author. 



c. Female, underside, Vallejo, Cal., June 2, 1892; 



Author. 



By error the yellow Rosa was placed in the middle of this line 

 when it should have been placed first, and Ausonides following. 



Ausonides inhabits the whole country west of the Rocky Moun- 

 tains, though it is not abundant in any one locality that I have 

 ever found, and it is only occasionally that a specimen can be 

 found. The Western examples are larger than the Eastern. I 

 regard the figures 57, b, c, as typical, and the preceding, 56, b, as 

 varying somewhat, from the regular form. The last one in the 

 line, c, is unusually large and very yellow. 



Genus ANTHOCHARIS. 



This genus comprises the "orange-tips" only. The orange-tips 

 are very readily distinguished by the orange patch at the apices of 

 the fore wing. The members of this genus are all of small size ; 

 mostly white, with dark ornamentation on upper side, and dark 

 or greenish or yellowish marbling on the under side of hind wings. 



This group of butterflies finds its metropolis in California, where 

 some six species and several sub-species or varieties are found, 

 against one species on the Atlantic Coast, and two or three in 

 Europe. 



The eggs of all the species are laid singly on the young leaves of 

 cruciferous plants, and they hatch in nine days if they hatch at 

 all, the first year. The larvae are very irregular in their habits, 

 according to the season ; but the pupae are the most irregular and 



