THE CANADIAN ENTOMOLOGIST. 61 



The species is the No. 385 of my Alberta List, originally 

 recorded as absidum, on the authority of Dr. Fletcher. Another 

 specimen shown me was taken at the same time and place as the 

 female type, and is probably in the collection of the University of 

 Saskatchewan at Humboldt, Sask. I have also seen a fem.ale 

 specimen taken in Calgary on August 1st, 1907, by Mr. C. G. 

 Garrett. I am under the impression that the species has been 

 taken by Mr Baird at High River, where grandis also occasionally 

 occurs. Grandis has also been taken at Lethbridge. ' 



The male antennae are minutely serrate-fasciculate as in 

 grandis.' The fore tibiae in both specimens have two claws, one 

 on each side of the extremity, the inner one the stronger. Nearly 

 all my grandis appear to have three claws, or at any rate a claw 

 and a very strong spine on the inner side, and a weaker claw on 

 the outer. My only specimen of alba unfortunately lacks fore 

 tibiae. Sir George Hampson does not mention any species of the 

 genus as possessing claws, merely stating "tibiae strongly spined." 

 The character may perhaps be somewhat variable, and at any 

 rate the limit between claws and strong spines is not easily defined. 

 The new species appears to come between grandis and alba. The 

 former is lemon yellow with pure white secondaries, the latter 

 pure white. My notes taken on other collections indicate that 

 neither species is always immaculate, and though the female of 

 viridisparsa has stood for many years in my collection as probably 

 new, I have thought it best to await a better knowledge of it and 

 other species of the genus. The receipt of the fine male from Mr. 

 Strickland decides me that it is time the form was recognized by 

 description. Should it ultimately prove to connect with either 

 grandis or alba, which I think improbable, the name will still hold 

 for it as a variety. 



Euxoa thanatologia Dyar. {Porosagrotis thanaiologia Dyar, 

 Proc. U. S. Nat. Mus., XXVII, 833, 1904). Var. boretha Smith, 

 (Journ. .N. Y. Ent. Soc, XVI, 86, 1908). Var. sordida Smith, 

 (Id. p. 80, seq.). All three described exclusively from specimens 

 collected at Kaslo by Mr. Cockle. 



Type form thanatologia Dyar. Described from a single 

 female without abdomen. Condensed, the description reads: 

 "Head, collar and thorax uniformly dark mouse grey .... 



