NATURAL SCIENCES OF PHILADELPHIA. 323 



a whitish band near the tip. Front silvery, with a reddish tinge on the fore- 

 head. Tuft and thorax reddish orange. Fore wings deep reddish orange, with 

 three silvery bands black-margined exteriorly, one beyond the middle toward 

 the base, one about the middle and one near the tip. A large black apical spot, 

 with a few silvery scales or minute spots; hinder-marginal line dark brown, 

 cilia reddish orange. Hind wings blackish, cilia blackish brown. Abdomen 

 black. 



The larva mines the under surface of oak leaves, in September. I did not 

 open the mines of the specimens I secured as I had but two. The larva was 

 cylindrical, and through the unruptured cuticle appeared to be of a lemon yellow 

 color. The pupa was contaiued in a very slight web within the mine. The 

 imago appeared in May. The larvae which I secured were taken in the leaves 

 of the black oak on September 23d. 



11. L. C a ry aef o 1 i e 11 a. Antenna? silvery, annulated with blackish. 

 Front silvery. Tuft and thorax reddish orange. Fore wings reddish orange, 

 with three silvery bands, black-margined exteriorly, the second about the 

 middle of the wing, angulated, with the black margin broad and produced pos- 

 teriorly on a whitish ground, nearly to the third, which is somewhat inter- 

 rupted in the middle ; the first midway between the second and base of the 

 wing and also angulated near the costa. The apical portion of the wing white, 

 covered with dispersed black scales, with a few black scales on a whitish 

 ground, on the costa, between the last silvery band the dusted apical portion ; 

 with two hinder-marginal lines, one the margin of the apical scales, the 

 other a dark brownish line in the cilia. Hind wings pale brownish gray, cilia 

 gray, with a fulvous hue. 



The larva mines the upper side of the leaves of the hickory tree in June, 

 July and September, making a white blotch, or an irregular, rather broad 

 tract when there is but one in the leaf ; and not throwing the leaf into a fold. 

 Frequently there are several larvae in a leaf, in one instance I counted twelve. 

 The ' ' frass ' ' is deposited along the middle of the mine. The larva is flattened, 

 and its physical charactei'istics are similar to those of the second larval group. 

 The head is very light brown ; the body dark lead color, becoming yellowish 

 posteriorly, with the mammillae of the thoracic rings yellowish, and a central 

 spot of the same hue on the first ; each ring on the dorsum with a dark brown, 

 shining macula, those on thoracic rings trapezoidal, the remainder oval ; on 

 the ventral surface the maculae are also dark brown, those on the fourth and 

 fifth rings being oval. The perfect insects of the spring brood appear in Au- 

 gust ; from the fall brood I did not succeed in rearing the imago. 



12. L. aceriella . Front silvery, tuft reddish orange and silvery mixed. 

 Thorax reddish orange. Fore wings reddish orange, somewhat metallic, with 

 a white streak black-margined exteriorly, from the inner basal angle to the 

 fold; with two oblique, silvery bands black-margined behind, one about the 

 middle of the wing and the other midway between it and the base of the 

 wing. Near the tip is a costal silvery spot, black-margined behind, with an 

 opposite, oblique, dorsal streak of the same hue, likewise black-margined be- 

 hind, and an oblique, costal, silvery streak continued on the line of the last 

 dorsal, running into the cilia just before the tip, black-margined above, at the 

 tip before, and below at the tip behind ; scarcely with a hinder-marginal line, 

 cilia of the general hue. Hind wings plumbeous, cilia with a fulvous hue. 



The larva mines the leaf of maple in September. It mines the upper sur- 

 face of the leaf, making a flat, rather broad tract, casting its ' ' frass ' ' along 

 the middle of the course of it. Physical characteristics those of the second 

 larval group. Head pale brown ; body yellowish green, with oval, dorsal, 

 brown maculae, darkest on threir margins ; thoracic rings on their sides pale 

 yellowish. The cocoon is circular. The larva is likewise found in the leaf 

 ofHamamelis Virginica (witch-hazel). 



1859.] 



