THE CANADIAN ENTOMOLOGIST. 259 



523. S. denticulata^ Grt. — Common. June, July and Aug. It 

 appeared this year on ]\Iay lolh. A day flier. The ground colour is 

 normally pale gray, but a purplish suffusion, in some specimens hardly 

 apparent, in others obscures at least half the ground. The extremes 

 might easily be taken for tv/o species. One of my Red Deer River 

 specimens, a female, has the ground obscured almost completely. 



524. 6*. conttjiuata, Walk. — Not common. Middle June to middle 

 July. Dusk, light and treacle. It is possible that I may have two 

 species under this name. In the more usual form the t. a. and t. p. lines 

 are well defined, broad, and dark sooty brown or black. A less common 

 variety has these lines very pale, narrow and faintly defined, most of my 

 specimens of this form being females. I certainly have not every inter- 

 grade between the two, but in all other respects they appear to overlap. 

 A male without the black lines was called sinuata by Hulst some years 

 ago. Mr. Taylor has seen a series, including this specimen, but has failed 

 to make any satisfactory separation. A female from Fallen Timber Creek, 

 west of Didsbury, taken by Mr. C. Garrett on June 13th, 1904, has been 

 referred as a small specimen of this species by Mr. Taylor. The maculation 

 is not unlike that of some specimens in the series lacking the black lines, 

 but I suspect it of being a different species. I have stronger beliefs in the 

 distinctness of a short series from the Red Deer River, which I believe I 

 can distinguish by their being grayer, having a smaller and less open discal 

 spot, and a more distinct purplish band beyond the t. p. line. Mr. Taylor 

 associates this with the Calgary form, which I have also from the same 

 locality. 



525. S. meliistrigata, Grt. — Two males from head of Pine Creek, 

 July 24th, 1 90 1, and x'\ug. 9lh, 1902. Both at light. 



526. Philobia enotata, Gn. — A male in perfect condition, July 4th, 

 1898 ; Billings's mill. Mr. Taylor has a male from me dated June 24th, 

 1899, but without definite locality. Probably not rare in the spruce. 



527. Dlastldis ( Cym.itophord) sulphurea, Pack. — Common every- 

 where. End July to middle Aug. in the Calgary district, but at the Red 

 Deer River locality it is on the wing in early July. I rarely see a female. 

 A day flier, and comes to light. 



528. D. JIavicaria, YdiOk. — Common. July and early Aug. Comes 

 to light. I have a specimen of both this and the preceding named 



flavicaria by Hulst, but the two are easily separable as species. The usual 

 form is pale lemon yellow, but a few specimens, with no real intergrades, 



