4OO ENTOMOLOGICAL NEWS. [Nov., 



miles north of Winnipeg, show the same antennal variation, 

 and grade easily through. The branches are usually slender 

 and of about even thickness, but are sometimes thickened at 

 bases, or slightly at tips. The bristles are usually, but not 

 always shorter than the shortest in the Chicago examples. 



Two from Aweme, Man., one from Regina, Sask., and 

 seven from Calgary, all have branches considerably longer 

 than width of shaft, but in some not a bit longer than in some 

 Chicago and east coast specimens, though the bristles in all 

 seem shorter. The tendency to a thickening at the base of 

 branches seems to have diminished in these, and they are 

 generally thickened at tips. Ten from Vancouver Island and 

 two from Glenwood Springs, Colorado, do not differ from 

 these in antennae, but the Vancouver Island specimens, espec- 

 ially those from Duncans, are more robust, and darker in 

 color throughout. 



Excepting perhaps the strongly colored New Brighton spec- 

 imens, there is little difference in the range of color and macu- 

 lation between series from the different localities from the 

 east and as far west as Winnipeg. Some of the more eastern 

 specimens possess slightly scalloped margins, in a varying de- 

 gree, and sometimes not at all. The tendency is less notice- 

 able in Winnipeg specimens, in which a very distinct median 

 shade is just as often present as in the others. Winnipeg 

 specimens average distinctly smaller, as is quite usual with 

 prairie forms, and there is a distinct tendency towards paler 

 and more whitish secondaries. But this again is an evan- 

 escent character. In Alberta the colors usually run paler, and 

 a pinkish or somewhat carneous suffusion is not unusual. 

 On the whole, the color of the secondaries here is still a little 

 paler. The palest specimen of any I have, both as to 

 primaries and secondaries, is from Calgary, and. as it happens, 

 one of the very darkest is from Winnipeg. My Colorado 

 specimens resemble some from Calgary more closely than any 

 others. 



On Vancouver Island (pectinatus) the build is somewhat 

 stouter than on the prairie, but scarcely more so than in the 



