Descriptions of some New Tineina. 191 



npex of the first is between the second and third costal, and the apex 

 of the second is between the third and fourth costal streaks. Cilia of 

 the forewiugs of the general hue. Hindwings, pale silver}-, with a yel- 

 lowish tinge, and cilia deeper yellowish. Face, palpi and antennae, 

 white, the antenn;>i stained above with ^^ellowish, and with a fuscus 

 spot on each joint. Thorax, white; legs, white, with the anterior sur 

 face of the second pair, brownish; and the tarsal joints, annulate with 

 brown. 



Phyllocnistis ampelopsiella, Cham. 



I liave never bred this species, except from mines in leaves of the 

 Virginia creeper, and, as I have already stated elsewhere, from the 

 same sort of mines in the leaves of that plant I liave bred a form indis- 

 tinguishable from P. vitifoliella^ Cham., which 1 have usually obtained 

 from a veiy different mine in grape leaves. P. ampelopsiella (vera.), 

 makes a whitish mine on the under side of A.mpelopsis leaves. The 

 mine, though what we call a linear one, is rather wide. It begins on 

 the side of a vein near the margin, passes down the vein to the midrib, 

 up the midrib to the next vein, up that vein to the margin, where it 

 crosses the vein, passes down it again to the midrib, and so on until 

 some times more than half of a leaf will be ruined. The track is 

 whitish, with a narrow central black line of frass. In a single in- 

 stance, I found a similar mine on the upper side of the leaf containing 

 a dead larva. I have seen thousands of these mines on the under side 

 of the leaf, all such as I have just described, and from them I have 

 bred indiscriminately the true P. ampelopsiella, and P. vifi/olielht. 

 The differences between them are palpable. Ampelopsiella is a little 

 larger and more coarsely scaled than iiitifoUella, and has a dark fuscus 

 streak extending from the base to the middle of the wing, and a dark 

 fuscus spot on dorsal margin before the middle. This streak and spot 

 are alwaA'S absent in vitifoliella, which has also a more silvery lustre. 

 Vitifoliella mines the upper surface of grape leaves, eats more deeply 

 into the parenchyma, and the track oi'mine is narrower, and not white 

 like that of ampelopsiella ; it is long and irregular, wandering all over 

 the leaf without regard to the venation. I have never seen or heard of 

 it on the under side of the leaf. These differences are constant and 

 palpable. Do they mark species or varieties ? I consider them distinct 

 species, but I have received, both from Miss Muntfeldt and Prof. Com- 

 stock, specimens of the true ampelopsiella, from which they inform me 

 were bred from <j,rape leaves; but I do not know the character of the 



