180 THE CANADIAN ENTOMOLOGIST. 



Corfield, Vancouver Island, and vaguely " British Cokimbia." It is said 

 to resemble minians, but has a difference in the male antennae. " In 

 minians the pectinations are rather short, and lengthened by a curved 

 bristle at the tip. In pectinatus this bristle is absent, but the branches 

 themselves are longer, and a little enlarged towards the tip. The differ- 

 ences are thus obvious, and emphasize the rathdr scant superficial charac- 

 ter. The specimen from B. C. has a peculiar greenish tinge to the ground 

 colour which I have not seen in the eastern species." I rather suspect 

 that this is the form I have above referred to as olive brown. The 

 ahlennal differences are not obvious to the naked eye. A figure of the 

 species accompanies the description. I have compared my Calgary series 

 with specimens from Aweme, Man.; Ret,ina, Assa.; Victoria, B. C; and 

 with minians from New Brighton, Pa., and from Chicago. Some of the 

 specimens from the last locality were sent me as var. violans, and differ 

 from what seem to be typical minians in being paler and having less of the 

 bronze, olive or violaceous tints. All the western specimens differ from 

 the eastern in the form of ^ antennae above referred to, except that in none 

 of my specimens is the bristle entirely lacking. Otherwise the differences 

 appear to be merely of colour and shade, and are not easy to define. 

 Some of the eastern specimens are very large, but they show a consider- 

 able variation in size, and the smallest are smaller than the average of the 

 western series. As a whole minians is more richly coloured and possesses 

 more lustre, though occasional specimens are scarcely separable except by 

 the $ antennae. The series of nine specimens from Calgary, Regina and 

 Aweme, are obviously all one species, those from the latter place coming 

 nearest to minians in colour of primaries. The secondaries of these nine 

 are, however, very much paler than in the majority of my minians. The 

 Victoria specimens, on the other hand, have much more even, duller 

 smoky secondaries than minians^ and are throughout rather more sordid 

 in appearance than anything that I have from east of the Rockies. From 

 the locality, I presume them to be typical, so that the prairie form is 

 probably at least a fairly well marked local race. The type of pectinatus 

 is at Washington. 



Incidentally, Prof. Smith has very kindly spared me one of his 

 Winnipeg specimens oi tertialis $ . This he described from that place in 

 Journ. N. Y. Ent. Soc, XL, p. ig (March, 1903), and says: "The species 

 resembles the easiern form in general appearance and type of maculation, 

 but is decidedly smaller throughout. The fringes are more even, with 

 hardly a trace of scalloping, and there is no obvious median shade on the 



