THE CANADIAN ENTOMOLOGIST. 207 



unites with the opposite dorsal one, forming a narrow fascia. Alar ex. 

 less than }£ inch. Very abundant in its mine, on the upper surface of 

 grape leaves, as larva and pupa, from May to November. Imago from 

 June to November, and hybernating under bark. Wisconsin, Pennsylvania 

 and Kentucky. 



3. P. ampelopsietta. N~. sp. 



Glittering snowy white wings, slightly golden towards the apex. An- 

 tennae, except near the base, suffused with pale fuscous. A pale black spot 

 on the dorsal margin of the wings, not far from the base. An indistinct 

 blackish median longitudinal line 011 the thorax. A very distinct oblique black 

 basal streak above the fold, beginning at the base of the costa, and parallel to 

 the fold. Behind the middle of the costa is an oblique costal black streak, 

 which is produced along the costa. Behind this is a black line curving 

 from the costa to the inner margin. At the tip is a circular black spot, 

 and before it, on the costa, are two straight black streaks, the posterior of 

 which is the longest, passing before the apical spot nearly to the inner margin. 

 At the tip are two black diverging lines in the ciliae, and another also in 

 the ciliae beneath the apical black spot, and nearly joining the black hinder 

 marginal line. Abdomen anil legs tinged with pale golden. Ciliae silvery. 

 Alar. ex. less than y£ inch. Kentucky. Common. 



The points in which it differs from P. vitegenella are indicated by the 

 italics, and its dark markings are more distinct. 



The larva mines the under surface of leaves of the Virginia Creeper 

 ( Ampelopsis quinquefolia) through the summer, and until the fall of the 

 leaves. Usually, at some point of the mine, it is spread out, assuming the 

 appearance of a white blotch, and thus differs from the mines of the other 

 three species. The parenchyma is not all eaten out, and the mine is not 

 transparent, thus resembling that of P. vitegenella and P. liriodendronella, 

 and differing from that of P. vitifoliella. 



4. P. liriodendronella, Clem. Proc. Ent. Soc. Phila., v. 2, p. 13. 



This is the only other described American species. It mines the 

 leaves of the Tulip Poplar ( Liriodendron tulipifera), but it is not, as Dr. 

 Clemens supposed, confined to the upper side of the small terminal leaves. 

 It mines both surfaces, without regard to the size of the leaf. And there 

 is a mine, which I believe to be the same, upon both surfaces of the leaves 

 of Magnolia glauca, and upon the upper surface of those of M. grandiflora, 

 and probably upon all of our native Magnoliacece, though I have never 

 observed it on the Japanese M. purpurea. 



