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little striae upon it, as if seamed longitudinally. These seams are not 

 placed regularly upon any one side, but sometimes above, sometimes below, 

 etc. 



Can the larva live on the woody particles on fences or on lichens ? It is 

 very abundant on all fences in the autumn. 



Tortrix ? sp. 



Sept. 10-30. Cuts off and winds up spirally portions of the leaves of 

 Tiha americana, forming a long, pendulous nest in which the larva is con- 

 cealed. The larva begins on the under side of the leaf, rolls it so that the 

 upper surface is outwards, and the rolls are fastened by a few transverse, 

 silken bands ; the lower end is enclosed, the upper end generally remains 

 open, and the head of the larva is directed upwards. It eats the inner folds 

 first, and rolls up the leaf as fast as it eats out the inside of its nest. 

 The bottom of the case is full of the excrement, in black grains. 



Sept. 13, 1847. Length about one inch. Body dirty pale green. Each 

 segment with a few minute, setiferous tubercles, set in the ordinary order. 

 Head cordate above, rather small, deep chestnut brown, and shining. Top 

 of the first segment covered with a brown plate. Last segment without 

 a plate. True legs, six ; prolegs, ten, of equal length. Gait creeping regu- 

 larly, not looping. A pale greenish, very narrow, lateral line is visible on 

 each side of the body, and a darker green, dorsal line, apparently the dorsal 

 vessel, seen through the thin and semitransparent skin. 



Cocoon under a leaf, Sept. 25, 1848. 



