126 THE CANADIAN ENTOMOLOGIST. 



sent a very different appearance. Perhaps as good a description as could 

 be given would be to say that it is gray mottled more or less distinctly 

 with white and dark gray marginal streaks on the fore wings, the apex 

 of which is dark gray or gray brown. 



G. piirpuriella Chamb. 



This is the nearest known American representative of the European 

 G. stigmatcUa. It differs from that species as described and figured in 

 Nat. Hist. Tin., v. 8, by having the head and palpi brownish red with a 

 purplish gloss, rather than " reddish gray," and the antennre purplish 

 brown with very faint white annulations, rather than " pale yellowish with 

 brown annulations." The anterior wings might, perhaps, be called reddish 

 brown, but are very strongly suffused with rich purple ; the triangle is 

 white instead of yellowish white, and its margins are not darker than other 

 parts of the wing. As in stigmatella, the triangle is sometimes produced 

 beyond the fold. The cilise in stigmatcUa are described as " rufous, 

 towards the anal angle gray." In puipuridla they do not differ from the 

 general color otherwise than that they have less of the purple hue. The 

 statement in the original description that there is a wide white band across 

 the middle of the posterior femora must have been made under an im- 

 pression produced by a reflection of the light, or by slight denudation, 

 though the statement that the tip is white is correct, and the base is also 

 white. In stigmatella the posterior tibiae are " pale reddish gray " ; in 

 piirpuriella they are sordid whitish (or white suffused with pale reddish 

 brown) ; instead of " pale grayish fuscous," as in my original description, 

 the posterior tarsi may perhaps be better described as dark brownish gray, 

 and the other tarsi are of the same hue, whilst in stigmatella all the tarsi 

 are described as " whitish faintly spotted with pale gray." My specimens 

 range from a little over six to full seven lines al. ex. ; stigmatella is seven 

 lines. It makes the most perfect " cone '' of all the species known to 

 me, frequently using up the entire leaf I have never found it on any 

 willow except 6". longifolia. The small spots in the triangle vary in num- 

 ber and size. The most striking difference on comparing a specimen 

 of picrptiriella with the figure of stigmatella , is in the cilias of the fore 

 wings, which in stigmatella are much paler, more yellowish, while in 

 purpuriella they are so dark as to make it somewhat difficult to detect the 

 three hinder marginal lines. 



