THE CANADIA.N ENTOMOLOGIST. 41 



This species is very closely allied to J/. Idmia, Dalm., of Lapland, 

 but in that species the antennre are black and the red band not half so 

 wide. That a species so distinct from any other thus far described from 

 N. A. should be turned up at this late day is remarkable, and shows the 

 possibilities of many other interesting discoveries when the Park region 

 is thoroughly explored. 



Mditcea nubigena, var. capella. 



In the Henry Edwards collection are specimens of a Melitsea 

 separated under the above name ; but in so far as I know, no descrip- 

 tion was ever published. The variations of /^«/^4''^7/tz are without number, 

 yet they all come into one of three general classes. In Western Colo- 

 rado and Utah the tendency is towards a gradual increase of the white 

 at the expense of the red and black, producing forms allied to IVheeleri, 

 Hy. Edw. Farther north in the Yellowstone region the tendency is to 

 darker forms, the black replacing the red to such an extent that the spots 

 are small and round, set in a black ground. Around Manitou and 

 Denver forms occur which are of a solid brick red, the white being 

 entirely gone and the black reduced to the veins and fine cross lines, the 

 latter even being wanting in portions of the wings. On the primaries 

 the spots at the costal end of the third row are the last to lose the white 

 colour, and in most of the specimens there are traces of it remaining 

 there. In some few males there is none whatever. The fourth row on 

 the secondaries preserves the whitish colour the longest, but not so 

 tenaciously as is the case on the primaries. In some specimens which 

 have entirely lost the white, the black ground colour still remains well 

 marked, while in others there is considerable fusion of the red spots, 

 while considerable of the white is retained. It is to those dark red 

 forms that Hy. Edwards applied the name capella, and I take pleasure 

 in retaining the name proposed by him. 



Described from eight pairs in my collection and others among my 

 duplicates. 



. Colias pelidne, var. Skinneri. 



Male, expanse xy^ to !?/( inches; upper surface of a greenish-yellow 

 shade somewhat darker than Scuddcri, lightly dusted with dark scales 

 over costal two-thirds of primaries ; marginal bands not so broad and cut 

 less deeply by the yellow nervules than is the case in Scudderi. The 

 inner margin of the border varies, being almost entire in some specimens, 



