240 THE CANADIAN ENTOMOLOGIST 



Its describer remarks: '' Diasema Bdv., which is 



found in N. Europe and Asia, and in America from Greenland to 

 Labrador, has the head, thorax and fore wing much more strongly 

 tinged with red-brown, the last with the antemedial line excurved 

 below the cell, the stigma more V-shaped, with a slight tail or 

 point beyond its lower extremity; the hind wing with the terminal 

 area, reddish-brown." 



On my first visit to the British Museum, in January 1909, I 

 found two Hudson Bay specimens and three others — one marked 

 Lapland, standing under diasema. From notes I took on them 

 I concluded on my return home that the Banff specimen I had 

 recorded under the name was correct. Three years later I actu- 

 ally compared this specimen with the diasema series, and concluded 

 that it fitted orophila better, and that, moreover, I had never seen 

 true diasema from the Canadian Rockies at all. My series at 

 present consists of a male and four females from Brobokton Creek, 

 August 13th, 1907 (Mrs. Nicholl), Banff, August 13th, 1900, and 

 August 1st, 1910 (Mr. N. B. Sanson and the author), and a pair 

 from Kaslo, B.C. (Cockle), the female dated September 10th, 1907. 

 I have also seen a Banff male from Mr. Sanson, dated September 

 1st, 1909, as well as more Kootenai specimens in Mr. Cockle's 

 collection. The course of the t.a. line varies somewhat, and so 

 does the size and shape of the sign. Both strokes of the latter 

 vary considerably in their course, as well as in the amount of grey 

 space which they define. The lower stroke may be almost direct, 

 or slightly curved, or even almost obtusely angled at about its 

 middle. The inner one may bend outwardly or inwardly, or both 

 ways, and may so connect with the outer as to form either an even 

 curve, an obtuse or a right angle, or a decided tail or point. Any 

 specimens, however, which may have been named diasema by me 

 have been so named erroneously. 



409. The species referred to under this heading is not snowi 

 nor does it bear any close resemblance thereto. It is microgramma 

 Hbn., a European species not previously recorded from North 

 America. I have compared a local specimen with a series in the 

 British Museum. I referred to this in 40th Rep. Ent. Soc. Ont., 



