NORTH AMERICAN LEPIDOPTERA. 125 



Mr. Beutenmuller, having raised the larva, gives me the following 

 description : 



"Head deep chestnut-brown, rugose; mouth-parts whitish; cervical shield 

 chestnut-brown, divided in the middle by the color of the body, which is brown, 

 with a pinkish hue. On each side of the body are scattered a few minute pilif- 

 erous spots each bearing a light brown hair; ou each side of the first and second 

 segments a shining black spot. Thoracic feet black : abdouiinal feet concolorous 

 with body. Length 13 mm. Larva taken May 30th, emerged June 17th." 



8. A. <*oini>toiiiella n. sp. 



Extremely like rubrifasciefla Pack., and indeed I can find no point 

 of distinction in the imagines. The insect is, on the average, some- 

 what larger, and more robust, with the wings slightly broader. The 

 outes line is almost obsolete, as are the discal spots; the hind wings 

 are genei'ally darker. 



F'ound in Maine, Massachu.setts, New York ; common near New 

 York, feeding on Comptonia asj)lenifo/ia and Myrica ceriferd. 



Larva. — Mr. Wm. Beutenmiiller (Ento. Am. v, 38, 1889) gives 

 the following description : 



"Head chestnut-brown, mouth-parts pitchy-black. Body above dirty green 

 with two rows of black piliferous spots on each side, and all bearing a light brown 

 hair. Spiracles black ; underside of body same color as above. Length Ifi mm. 



" Lives singly in a pyriform case made of frass between the terminal 

 leaves of the branches of Myrica. cerlfera." 



The case is more nearly broadly oval than pyriform, and is a thick 

 and .solid silk covering with a long flabby tul)e at opening. The 

 case is about 20 mm. long by 15 mm. wide. In many instances two 

 are spun together side by side the openings always in the same di- 

 rection, the cases being unconnected within. 



9. A. betiilella n. sp. 



Another insect very closely resembling rubrifasciel/a Pack., and 

 also comptonieUa. It differs, first, in having the most of the fore 

 wings washed lightly with violet red ; secondly in lacking the basal 

 red cross-band entirely. The basal line is obsolete, and the outer 

 line and discal spots distinct. Hind wings dark fuscous. Feeds on 

 Betula, the imagos emerging late in June and early in July. 



The larva I have not seen. The case, which afterwards becomes 

 the cocoon, very closely resembles that of A. comptoniella. It is 

 always a cleaner mass of silk not having fine pieces of leaves wound 

 in with the outside. It may be only a variety of comptoniella. 



