NATURAL SCIENCES OF PHILADELPHIA. 207 



the base of the costa to the middle, thickly covered with long scales placed trans- 

 versely. 



Female. Fore wings without discal vitreous spot. Discoidal cell closed by 

 an arcuate nervure ; with costal and subcostal nervures distinct, the latter 

 with a single marginal branch from the cell, and at the apical third of the 

 wing subdividing into an apical and marginal branch, which is furcate ; the 

 subcosto post-apical from the superior angle of the cell. Submedian four 

 branched. 



With ocelli. Labial palpi ascending, with tips but little elevated above the 

 vertex ; nearly cylindrical ; second joint somewhat thickened and long*, ex- 

 tending above the eyes ; the third short, slender and pointed- Maxillary 

 short, without pencil of hairs. Antenu=ie simple and setaceous : basal joint 

 thick, without appendage behind. 



The tongue in both sexes is scaled at the base, and moderately long ; and 

 the fore wings "with distinct strigse and tufts of scales. 



This genus appears to be congeneric with Acrobasis of Zeller. 



L. platanella . Labial palpi pale brownish-red, touched in front with 

 pale gray. Head and thorax brownish-red, the latter varied with grayish and 

 dark fuscous. Fore wings grayish fuscous, with the costa touched with 

 brownish red, and a patch of the same hue in the female, near the base of the 

 inner margin containing a tuft of raised scales ; in the male, blackish brown, 

 touched with brownish red. The base of the wing is whitish. In the middle 

 of the wing is a broad white band, obsolete toward the costa, with two straight 

 blackish-brown lines internally, and in the male shaded internally with the 

 same hue. The subterminal line is irregular and whitish, dark margined 

 internally. The hinder margin of the wing is touched with blackish-brown. 

 Hind wings pale brown, somewhat darker toward the hinder margin. 



The larva? is tortriciform in appearance. Head pale brown, mottled with 

 whitish. Body with isolated hairs, pale green, with a dark brown dorsal line 

 and a fainter stigmatal line of the same hixe, or pale reddish, with a brown 

 dorsal line on each side of the vascular. 



It makes a web on the under surface of the leaf of Sycamore, (Platanus o c- 

 ciden talis), drawing it together and living within a silken tube. 



The cocoon is woven on the surface of the ground, in form of a flattened oval, 

 consisting of brown silk covered exteriorly with grains of earth. The larva- 

 remain in it unchanged during the winter. It may be taken in July, and 

 enters the pupa state during the latter part of August, to appear as an imago 

 in May or June. 



L. asperatella. Labial palpi blackish brown, varied with whitish. 

 Thorax pale grayish, varied with grayish or dark gray. Fore wings dark 

 brownish-gray, with a blackish brown tuft of scales in the basal part of the 

 fold, and a smaller one of the same hue on the disk above it, a whitish me- 

 dian band, sometimes almost obsolete, containing on the disk a small black- 

 ish-brown tuft in the female, with an internal crenated blackish line, and 

 shaded toward the base with blackish ; on its external margin is a line of 

 raised scales. The subterminal line is pale grayish, angulated and margined 

 internally by a blackish line, and externally by a fainter one produced into 

 points on the nervules. The hinder marginal line is black. Sometimes in 

 the female the base of the wing is whitish, slightly touched with luteous. 



Penna. and Mass. From Dr. Chas. Girard. 



TINEINA. 



Lithocolletis. (See Paper No. 2.) 



L. Fitchella. Argyromiges quercifoliella, Fitch, Report v., Section 

 327. Head, face and thorax silvery white. Labial palpi tipped with pale 

 ochreous. Antenna? pale saffron ; basal joint silvery white. Fore wings pale 



I860.] 



