COLIAS VII. 
COLIAS OCCIDENTALIS. 1—5. 
Colias occidentalism Scudder. Proc. Bost. Soc. Nat. Hist. 1862. 
Male. Expands 2 inches. 
Upper side lemon yellow ; primaries have a broad, black marginal border, 
not cut by the nervules, erose within and nearly straight to the curve, advanced 
on costa to one-fourth the distance from apex to base, and on inner margin pro- 
jecting an unusually long, attenuated spur; discal spot con-colored, oval, in a pale 
black ring. Secondaries have the border broad and nearly even on the inner 
edge; discal spot large, round, orange; fringes roseate except at inner angle of pri- 
maries and outer of secondaries where they are yellow. 
Under side deep yellow ; costal edge of primaries and basal half of seconda- 
ries much irrorated with black ; primaries immaculate excepting the discal spot, 
which is yellow in oval black ring ; secondaries have an obsolete sub-marginal 
series of ferruginous patches, the middle ones only distinct ; a ferruginous patch on 
costa ; at base a roseate point ; discal spot large, round, silvery with a roseate tinge, 
within a brown ring that is much specked with roseate scales. 
Body above black covered with greenish hairs ; below yellow ; collar roseate ; 
legs roseate ; palpi yellow, roseate on upper side ; antennae dark brown above, 
paler below ; club brown. 
Female. Expands 2.4 inches. 
Upper side deeper colored inclining to orange on disk of secondaries ; the 
latter without marginal band ; that of primaries broad, faintly marked, consisting 
merely of patches of grey scales enclosing large yellow spots ; discal spot large, 
sub-ovate, black enclosing a yellow streak ; that of secondaries large, round, orange ; 
under side of primaries deep yellow on disk ; rest of wing, and all of secondaries 
pale ; discal spots as in male. 
Female. Variety A; upper side greenish white ; secondaries with a broad 
border enclosing whitish spots as on primaries. 
Taken on Mackenzies Biver and at the Gulf of Georgia, British Columbia. 
