THE CANADIAN ENTOMOLOGIST. 19 



don't seem to be used to it yet ! It certainly shows considerable varia- 

 tion, but I fancy the deception is generally due to the varying effects 

 caused by the different angles at which the lantern rays shine on it. 



1 6 1. H. (X.) arctica, Bdv. — This decidedly pretty, and I suppose 

 well-known species, was fairly common at treacle in 1896, and I had taken 

 a few specimens previously. I don't think either Mr. Hudson or myself 

 have met with it since. End June and July. 



162. IT. (X.) occidens, Grt. — Very rare. End June and July. 



163. H. (X.) versuta. Smith.— Described from Calgary. The type 

 is in U. S. Nat. Museum. Generally common at treacle in the hills. 

 June and July. The variation, though by no means striking, is consider- 

 able, and apt to be rather confusing, both when collecting and in the 

 series. I do not think, however, that I have more than one species under 

 the name. There is often a mossy or bronze lustre, but this is sometimes 

 lacking, and the forms are then dark powdery gray. It may be almost 

 unicolorous, and the markings, never very distinct, obscured, or the reniforni 

 may stand out rather conspicuously in whitish. The s. t. area is sometimes 

 rather conspicuously paler than rest of wing, especially near the inner 

 margin. It is really the variation in lustre and the suffused nature cf the 

 markings which render the study of a long series necessary before the 

 species can be recognized at sight with any degree of certainty. Nearly 

 ninety per cent, of my specimens are 9 $ . Figure is given with 

 description. 



[64. H. (X.)ferens, Smith.— (Can. Ent.,XXXV., 134, May, 1903). 

 Described from Calgary. The type is a (? in the Rutgers College collec- 

 tion. Very rare until 1903 and 1904, when over twenty specimens turned 

 up at light. Prof. Smith states that it is near runata, a species I have not 

 yet seen. It is certainly very like allecto, from which, however, it may 

 be distinguished easily by the absence of grayish powdering, and greatei- 

 length, comparative to width, of wing. Bad specimens, too, are not unlike 

 remissa, which species has, however, larger, rounder and paler discoidal 

 spots. Sir George Hampson says : " I doubt its being distinct from 

 separansy Grt." He has charge of the type of that species, and doubtless 

 has good grounds for the suggestion. July. 



165. H. (X.) enigra, Smith. — (Psyche, June, 1904, p. 54). Described 

 from Calgary. Seven c? S , July 3rd to 19th, at light, 1903. Prof. Smitii 

 says after the description : " This is one of those obscure species that have 

 no positive characters, and depend for their standing upon the absence ol 



