32 



A. POPULi Walker. (PI. V, fig. 9; PI. VII, fig. 8.) 



Cossus populi Walker, Cat. Lep. Brit. Mus., VII, p. 1515 (1856) ; Morris, Syn. 



Lep. N. Am, 124 (1862) ; Edwards, Ent. News, II, p. 72 (1892) ; Kirby, 



Cat. Lep. Het. I, p. 861 (1892) ; Neumoegen & Dyar, Jour. N. Y. Ent. 



Soc, II, p. 162 (1894) ; Wolley Dod, Can. Ent., XXXVIII, p. 266 (1906). 

 Xyleules populi Packard. Proc. Ent. Soc, Phil., Ill, p. 389 (1864) ; Grote, Trans. 



Am. Ent. Soc, II, 75 (1868). 

 Cossus angred Neumoegen & Dyar (nee Bailey) Jour. N. Y. Ent. Soc, II, p. 



162 (1894). 

 "Very nearly allied to C. ligniperda but smaller and somewhat different in 

 the markings of the fore wings. Female — Cinerous, antennae black, very min- 

 utely serrated, a little longer than the thorax. Palpi black, extending as far as 

 the head. Legs with whitish bands. Wings slightly reticulated, with very 

 numerous minute transverse blackish streaks. Fore wing with two very slen- 

 der irregular blackish bands ; one at beyond Yj of the length ; the other sub- 

 apical and forked in front. Length of the body 14 lines ; of the wings 28 lines." 

 St. Martin's Falls, Hudson Bay. 



We reproduce a photograph of a colored drawing of the type of 

 this species received through the kindness of Sir G. Hampson. He 

 writes us in this connection that "the abdomen of type is pressed and 

 rather laterally flattened but not more elongate than in its allies." The 

 species difl^ers from anything we have ever seen, but it is most nearly 

 approached by a $ we have from Calgary ( Wolley-Dod ) . The black- 

 ish bands of the fore wing are scarcely to be seen in the drawing and 

 are not prominent as in briicei Frch. The figure of angrczi Bailey giv- 

 en in Bull. Dept. Agri. Ent., Ill, is so very distinct from the figure of 

 populi that we have no option but to separate the species ; in fact 

 populi Walk., undosus Lint., and ore Stkr. seem to form a group much 

 more closely related to each other than to angrczi, if any reliance can 

 be placed on figures, and it is possible that they are merely geographical 

 forms of the same species. We keep them separate, however, on 

 grounds as stated above. If the Calgary 9 is the true populi Walk, 

 the larval stages are passed in poplar, as our specimen was bred by Mr. 

 Dod from a pupa found in a species of Populus. 



A. ANGREzi Bailey. 



Cossus angrezi Bailey, Pap. II, p. 93 (1882) ; id. Bull. Dept. Agr Ent, III, p. 54, 



fig. 6, PI. 2 (1883) ; French, Can. Ent., XXII. p. 44 (1890) ; Kirby, Cat 



Lep. Het, I, p. 861 (1892). 



"Head somewhat narrow on the vertex. Collar and head yellowish gray. 

 thorax black; the edges of the tegulae shaded with yellowish gray. Fore wings 

 with a nearly white ground, shaded with black, and with black reticulations. 



