206 THE CANADIAN ENTOMOLOGIST. 



PHYLLOCNISTIS. 



The species of this pretty genus of snow-white moths may be distin- 

 guished from the white species of Lithocolletis by the smooth head and the 

 usually smaller size. Otherwise, they resemble each other strongly. The 

 resemblance between Z. Chmensdla and P. vitifoliella, and between P. 

 liriodendronella and L. caryce-albella, is very great. The larvae also, not- 

 withstanding that they are apodal, resemble the young cylindrical larvae of 

 Lithocolletis in general appearance. 



The mine is a long narrow winding line like the track of a small snail, 

 and it pupaies in a nidus at the end of the mine on the edge of the leaf. 



i. Z. vitifoliella. N. sp. 



Glistening snowy white, the forewings tinged with, golden towards the 

 apex. Behind the middle of the wing is a narrow oblique blackish costal 

 streak, and behind it again another small straight one, opposite to which 

 is a small straight dorsal one. At the tip is a circular black spot, and 

 before it on the costa are two straight black streaks. At the tip of the 

 wing are two blackish diverging lines in the ciliae, with another also in the 

 ciliae beneath the apical spot, and nearly adjoining the blackish hinder 

 marginal line. Ciliae silvery. Hind wings and ciliae silvery white. Alar. 

 ex. less than y^ inch. The larva mines the upper surface of Wild Grape 

 leaves from May to October. Kentucky. Wisconsin. 



Since the above was written, I have seen the remarks of Dr. Clemens, 

 in Proc. Ent. Soc. Phila., vol. i, p. 135, under Lyonetia, in which he 

 describes a mine in leaves of grape vines, in which the parenchyma is 

 entirely eaten out, and the frass centrally deposited, in both respects 

 differing from the mine of P. vitegenella, which resembles a snail's track. 

 Dr. Clemens did not succeed in rearing the imago, but thought it was 

 distinct from P. vitegenella, though closely resembling it. On examining 

 my herbarium specimens of the mined leaves, I have no doubt that Dr. 

 Clemens had the mines of this species before him. In Kentucky it is as 

 abundant as P. vitegenella, all through the summer, in all of its stages, and 

 can be found in winter abundantly hybernating under the loose bark of 

 Hickory trees, and in similar situations in company with P. vitegenella, and 

 occasionally P. a?npelopsifoliella. It seems to bear nearly the same relation 

 to P. vitegenella that Lithocolletis Clemensella does to L% lucidicostella. 



2. P. vitegenella, Clem. Proc. Acad. Nat. Sci. Phila., i8$g, p. 327. 



Differs from P. vitifoliella only in the following respects : The antennae 

 are blackish above ; there is a pale semi-oval blackish spot on the dorsal 

 margin of the wings, not far from the base ; the second costal streak 



