COLIAS VII, 



COLIAS OCCIDENTALIS. 1—5. 



Colias occidental is, Scudder. Proc. Bost. Soc. Nat. Hist. 1862. 



Male. Expands 2 inches. 



Upjier side lemon yellow ; j^trimaries 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 aj^ex to base, and on inner margin pro- 

 jecting an unusually long, attenuated spur ; discal spot con-colored, oval, in a j^ale 

 black ring. Secondaries have the border broad and nearly even on the inner 

 edge ; discal sj^ot 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 2:)rimaries and basal half of seconda- 

 ries much irrorated with black ; jjrimaries immaculate excepting the discal spot, 

 which is yellow in oval black ring ; secondaries have an obsolete sub-marginal 

 series of ferruginous jiatches, the middle ones only distinct ; a ferruginous patch on 

 costa ; at base a roseate point ; discal sjiot 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 ; antennse 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 jsatches 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 River and at the Gulf of Georgia, British Columbia. 



