GENUS COLIAS 181 



bb, Female, Potato Canyon, April 22, 1891 ; Author, 

 c, Female, underside, Banning, Cal., April 3, 1891 ; 

 Author. 

 The colors of the upper side of these two forms have been de- 

 scribed as canary-yellow for Harfordi, and lemon-yellow for Bar- 

 bara; with the further distinction of Indian-yellow for the 

 underside of hind wings of Barbara. I have a large series of both 

 forms, and I find that the black border on Barbara is uniformly 

 broader than on Harfordi; all this is fairly shown on the plate, 

 so that you can form your own conclusions. It appears to me 

 that there are two good forms shown, and that, although the two 

 forms are known to intermarry, and behave altogether as one 

 species, as I proved abundantly many years ago, and as stated in 

 Edwards' work, there is no good reason why the two forms should 

 not bear their own separate names ; for, as I have said before, 

 names are of no use but to designate and identify different forms. 



86. Colias Occidentalis. Previously illustrated only in 



Edwards' Butt. N. A. 

 Plate XI ; Figures 86, b, bb, c. 

 Fig. 86, Male, Vancouver Island, June 21, 1891 ; Author. 



b. Female, Vancouver Island, June 21, 1891 ; Author, 

 bb, Female, Victoria, B. C, July 2, 1891 ; Author. 



c, Female, underside, Tacoma, Wash., July 10, 1891 ; 



Author. 



Occidentalis and Chrysomelas the next species, are much alike 

 on the upper side, but beneath Occidentalis is gray, and Chryso- 

 melas is Indian-yellow. Occidentalis is the more northern species, 

 inhabiting Vancouver Island and other adjoining regions, but not 

 coming far into the States south of Puget Sound. I have never 

 found it abundant, nor even common in any place, and count it a 

 rarity everywhere. 



Nothing is known about its habits or particular food-plant. 



87. Colias Chrysomelas. 



Plate XI ; Figures 87, b, bb, c. 



Fig. 87, Male, Mendocino County, Cal, June 14, 1891; 



Author, 

 b. Female, Northern California, May 24, 1891 ; 



Author. 



