108 Tineina of the Central United States. 



very rare. I have only twice met with it; on both occasions in South- 

 ern Kentucky, in July, and in each case the larva was just dead in the 

 mine, and the parasitic larva which had killed it was lying beside it. 

 It mines the upper surface of Smilax cjlahra leaves. I have never 

 found it in Northern Kentucky, though Smilax is abundant. The 

 mine is of a snowy white, with a central line of frass, long and \vinding, 

 and resembles that of P. liriodendronella, Clem., in the leaves of the 

 tulip tree (L?r?Wen(?/'on, tulipfera'); liriodendronella, however, mines both 

 surfaces of the leaves, not, as Dr. Clemens states, the under surface 

 only. I have not succeeded in breeding the species, which I believe 

 to be P. liriodendronella, from leaves of magnolias. At p. 207, vol. iii., 

 in the Canadian Entonwlogist, I have stated that the species of mag- 

 nolia so mined were M. glauca and M. grandiflorea. It may mine 

 those species, but the leaves in which I have taken it ■were those of 

 the cucumber tree, M. acuminata, and the umbrella tree, M. uvihrella. 

 The mines in poplar, magnolia, liriodendron and smilax leaves are sim- 

 ilar to each other, Avhite, with a line of frass, and the second and 

 third, and possibly the first and fourth, are found on both sides of 

 the leaves, long and winding ; at some part winding in concentric cir- 

 cles. The mines of vitigenella and liquidambarisella resemble each 

 other : they are like small snail tracks, indistinct, long and irregular, 

 and confined to the upper surface, and show no line of frass. The 

 mine of Arnpelopsiella is always on the lower surface, and by conflu- 

 ence of its narrow lines becomes a white blotch. 



The mines of vitifoliella, and the mine of the unknown species 

 mentioned in the Canadian Entomologist, vol. iii., p. 208, are long, 

 Avinding., irregular, distinct, with a central line of frass, and confined 

 to the upjier surface. 



TiscHERiA. — T. tinctoriella (n. sp.) 



Palpi and face saffron yellow : vertex, thorax and anterior wings 

 rather deep saffron yellow, dusted with dark brown; the dusting is 

 rather dense along the margins of the wings and in the apex, and there 

 is a patch of brown scales on the dorsal margin, at the beginning of the 

 cili». Al. ex., over one fourth of an inch, Kentucky. » 



The larva mines the leaves of the black oak (Quercvji tinctoria) and 

 the chestnut (Castanea americaiia). The mine is very singular, and is 

 one of the prettiest mines that I have seen. Before I had seen the 

 larva, I supposed it to be the mine of a lAthocolletis. At first a small 

 portion of the upper cuticle of the leaf, nearly circular in outline, is 

 loosened ; then the larvce proceeds to construct a circular nidus or 



