GENUS COLIAS 121 



bb, Female, Potato Canyon, April 22, i8gi ; 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 ap])ears 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 provetl 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. 

 Pl.\te XI ; Figures 86, b, bb, c. 

 Fig. 86, Male, Vancouver Island, June 21, i8qi ; 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, ]\Iay 24, 1891 ; 

 Author. 



