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white in narrow edge of roseate, the other white in ring of red-brown. 

 Captain Gamble Geddes sent me for inspection a large number of 

 examples of Colias taken by him in 1883, in the N. W. Territories 

 of British America. Among them were many male Christina, typi- 

 cal form. Others shading from deep orange to pale, and into ochra- 

 ceous. There were also several forms of yellow female, including the 

 immaculate one originally described and figured; also many white 

 females, some of which were precisely like the albinos from Mt. Judith. 

 After a brief and hurried inspection these insects were returned, and I 

 am not able to speak of them now except in a general way. But I have 

 lately received from Captain Geddes for my own collection four typical 

 males, Christina; one male (E") like E of Mt. Judith lot, that is, with 

 pale orange on disk of fore wings only, the rest being yellow ; and one 

 ochraceous male, close to the typical Astrcra. Of the four orange ex- 

 amples, two have the under side greenish yellow, as originally described 

 for this species; both have a slight red-brown ring about the white 

 discal spot; one has a small red-brown patch at outer angle (the only 

 instance known to me where that mark has appeared in this species), 

 otherwise immaculate. The other two examples have the under side 

 deep yellow; in one of these the discal spot is in roseate edging, with 

 red-brown scales interior to that; otherwise immaculate; the other has 

 roseate edging only, and is immaculate, except that a few black scales 

 in the sub-median interspace of fore wing gives a suggestion of an ob- 

 solete row of sub-marginal spots. 



The pale male, E', is yellow beneath, immaculate, dusted; the discal 

 spot duplex, each part white with rosy edge, and slight outer ring of 

 red-brown. The sixth male, like Astr^ea, has also a duplex spot, and 

 traces of the three lower spots of sub-marginal row on fore wing, other- 

 wise immaculate, dusted. 



The three yellow females differ from each other; No. i is like type 

 Christina 9, figured in the Plate; no marginal borders; immaculate 

 beneath, densely dusted; discal spot duplex, the larger part white with 

 some rosy scales amongst the white, a thin rosy edge, and red-brown 

 outer ring. No. 2 is color of No. i, but with the faintest shade of 

 orange in median interspaces of fore wing; a few black scales about 

 apex and down hind margin suggest a border; under side densely dusted, 

 immaculate; discal spot white in thin rosy edging. No. 3 has decided 

 but pale orange on both wings; and a decided pale black border, with 

 a whitish space in middle instead of a series of spots. Under side im- 

 maculate, dusted thickly; discal spot duplex, each part in slight rosy 

 edging. 



Of the three white females. No. i is like yellow No. 2 except in 

 color, and the white has a faint yellow tint; under side immaculate, 

 dusted; discal spot white in slight red-brown edging. Nos. 2 and 3 

 are o-reenish white, with pale broad border entirely across wing; one 



