AMERICAN LEPIDOPTERA. 203 



Body above covered with greenish hairs, the collar dull pink ; 

 thorax deep yellow beneath, abdomen pale; legs pink; palpi entirely 

 yellow in front, pink at tip and on upper side; antennae pink, inclining 

 to brown above ; club pink with brown scales, the tip yellowish. 



Female. — Same size. Upper side of same shade of yellow as the 

 male; sometimes much dusted with black on costal margin of pri- 

 maries, at base of both wings, and over the larger part of secondaries; 

 but often quite clear, except at base; the marginal border of primaries 

 broad, pale black, much dusted with yellow, partly inclosing a series 

 of large yellow patches; but occasionally these patches are small and 

 then are completely inclosed ; the discal spot black, larger than in the 

 male, either rounded or oval. Secondaries sometimes have no border, 

 but usually a narrow one, partly inclosing yellow patches ; the discal 

 spot as in male. 



Under side either deep yellow or pale greenish white, much dusted ; 

 the discal spot as in the male. 



Some thirty individuals of this species and of both sexes, were 

 taken at Lake Labaehe, in British Columbia, by the late G. R. Crotch, 

 and the whole series came into my possession. They were submitted 

 to Mr. Henry Edwards, who pronounced them distinct from any of the 

 Pacitic coast species, with which opinion I fully agree. The nearest 

 ally seems to me Fhllodlce., and from this they diflFer in many striking 

 particulars; in the shade of color, being canary instead of sulphur 

 yellow ; in the pale ma>rginal border, less advanced on costal margin,- 

 cut throughout by the yellow nsrvules; in the small and often obsolete 

 discal spot of primaries; in the invariably bright orange discal spot of 

 secondaries, which is only occasional in PhiJodice ; on the under side 

 in the small discal spot of primaries; in the almost always single spot 

 of secondaries, and which is most often roseate, unaccompanied by a 

 conspicuous border or large patch; and in the absence or obsolescence 

 of the extra-discal clusters, as well as the one at outer angle. The fe- 

 male differs from that sex of Pliilodke in a similar way, in paleness of 

 color, in the discal spots, in the remarkably large patches in the mar- 

 ginal border of primaries; and on the under side the surface is most 

 often immaculate, except for the discal spots. 



Mr. Mead brought frorfj Colorado in 1871, a Colias very close to 

 this from Lake Labaehe, and which in Reakirt's paper on the Butter- 

 flies of Colorado (Proc. Ent. Soc. Phila., 1867, p. l4), is doubtless the 

 one called Fhilodice. The same form was brought from Montana by 

 Dr. E. Coues, when engaged in the Boundary Line Commission. For 

 the present I shall give no opinion as to these, but they seem to me 

 nearer to Eriphi/le than to Fhilodice. 



