THE CANADIAN ENTOMOLOGIST. 14? 



brow)i, especially on extreme edge. Collar never as pale as costa, gener- 

 ally unicolorous with thorax, generally with a black line, but this is 

 sometimes scarcely traceable. Discoidals outwardly of same colour as 

 palest part of costa, but nearly always darker inwardly. In more than half 

 the specimens there is a series of black sagittate dashes preceding the 

 s. t. line, but only in one specimen do they extend more than half way to 

 t. p. line. In the rest of the specimens these dashes are either entirely 

 absent or discernible by a dusky shade only. 



As a whole my Idahoensis is a slightly longer and narrower winged 

 species, runs paler in colour, and when dark tends to purplish, sprinkled 

 with gray, rather than to red-brown, and the s. t. dashes are more often 

 present and then longer and sharper than in furtivus. 



My flirt ivus is like Dr, Holland's fig., exactly, but short s. t. black 

 dashes, not shown in that fig., are present as often as not. Sir George 

 Hampson's description says of Idahoensis: "is dark reddish-brown, slightly 

 irrorated with white," but mentions no s.t. black dashes. His fig. suggests my 

 Idahoensis in co^lour, lacking the usual sharp s. t. dashes, but the discoidals 

 seem darker centrally like my furtivus. He tells me "The type o{ Idaho- 

 ensis is the gray form." His description oi furtivus is "gray-brown or red. 

 brown .... a series of small dentate black marks" (before s. t. line). 

 His figure suggests my furtivus, but the discoidals are smaller than in any 

 of my specimens of either species and the black s. t. dashes there shown 

 are often wanting. He tells me '-'a specimen we have identified by Smith 

 is the reddish form." As a matter of fact, in his descriptions, Idahoensis 

 sounds the darker coloured species of the two, which, I take it, is incorrect. 

 Prof. Smith says "both red and gray forms of each occm\ furtivus has 

 black sagittate spots before s. t. line; Idahoensis does not have these, 

 though it may have a dusky shading." He also mentions a distinctive 

 character in shape of orbicular, but this is so variable in both species that 

 I find it valueless. Recently I sent him both species and, he seemed mis- 

 led, by the sagittate dashes, a supposed distinctive feature oi furtivus, into 

 taking my grayish form for his own species and telling me I had the names 

 reversed, thus reversing his previous reference of my two forms. The 

 species, for such I believe them to be, require placing on a firmer basis 

 than they seem to have hitherto been. 



271. E. tiordica, Smith. — -Described from two ^^ ^ and two $ 9 from 

 Calgary and Olds, Alta. (B. C. in error). Olds is about 60 miles north of 

 Calgary on the way to Edmonton. Its author states: "It is an ally of 



