THE CANADIAN ENTOMOLOGIST. 149 



females from Garfield Co., Colo., 7,000 ft., and a female co-type is 

 excellently figured by Hampson. The other pair stand as types in the 

 Washington Museum, and both are figured in the Monograph. I have 

 serious doubts whether these two types are one species. The male, as 

 stated under the description, is a good deal smaller than its female, and 

 lacks the contrasting sharp vvritten black markings of the other two females, 

 and of all my specimens. It seemed to me to agree very closely with one 

 or two specimens standing, I thought correctly, under popiili. But at 

 any rate the name should probably stand for the feniale. The ground 

 colour is the whitest of any North American Acronycta known to me. I 

 once thought it was the western form oi populi, but have abandoned that 

 idea. I have a specimen from Winnipeg, and one from Montreal, from 

 Mr. Winn. It is broader winged \\\?cci populi, has less acute apices, whiter 

 ground, and while the maculation is blacker and more contrasting, the 

 powdering is less evenly distributed and seldom as heavy. The orbicular 

 is very small, round or nearly so, and often reduced to a mere black point. 

 There are numerous other differences. In fact, it is a closser ally of 

 leporina Linn, of which I have a fine pair from Cartwright, Man. These 

 have a slightly creamy ground, and much less of both the powdering and 

 maculation. They differ in these respects somewhat sharply from the 

 whole of my cretata series, but had I not creiata from Winnipeg I should 

 have suspected the Cartwright specim.ens of being a local variation. I 

 expect shortly to have European leporina to compare. Dr. Dyar, in his 

 " Kootenai List," gives three names as probable varieties oi leporifia Linn., 

 '■^vulpina Grote, Atlantic coast ; cretata Smith, Colorado mountains, and 

 moesta Dyar, eastern B. C" The type of vulpiiia I have not seen. If 

 the pair I saw standing in the Washington collection are true vulpina, my 

 Cartwright specimens are probably the same species, which seems likely to 

 prove distinct from cretata, to which I have no hesitation in now referring 

 vioesta as a suffused form. 



134. A. inanifoba Smith. — One worn specimen on the Red Deer 

 River, N. E. of Gleichen, on July 6th. 1905. I have examined a large 

 number of this species from Cartwright and other points in iSlanitoba, and 

 have a good series. Its nearest ally seems to be furcifera, than which it 

 has paler ground colour, is more strigate, and has all the dark shades 

 blacker. My material \nfiircifera is, however, deficient, and I have none 

 from Manitoba or westwards. Holland's figure wn^^x furcifera appears to 

 me to be 7nanitoba. It is a trifle too brown, which may be accounted for 

 by the tint of the plate. The species I refer to djs, furcifera is that figured 



