l8Gi.] 7^ 



face ami the larva leetls in one patch until it is compelled tn remove its 

 entire body from its case, and then removes to another part of the leaf to 

 form a new mine. The fall larva) may doubtless be taken in the .spring 

 or early summer. T have likewise found a case like the above on the 

 leaves of Dogwood. The case I found was attached to the midrib of a 

 leaf; I have not noted the existence of a mine. 



2. C. Coryli folic 11a. 'i'ho larva mines the leaves of Hazel in Sep- 

 temljer and October. . It is pale brown, with dark brown thoracic, dorsal 

 spots. The case is three lines long, dark brown, irregularly cylindrical, 

 compressed or flattened at its hinder end, with two teeth about the middle 

 of the tipper edge, separated from each other about one-third of the length 

 of the case and dilated somewhat or rounded on the lower edge between 

 the teeth. 3Iputh ofca.se not deflected. The mine of the larva is nearly 

 circular. 



o. C. Viburniella. The larva mines the leaves of Vilmnntm pruni- 

 folium in September and October. The head and body is dark brown, 

 with blackish thoracic patches on the second and third rings. 



The case is irregularly formed. It is reddish-brown, nearly cylindrical, 

 with a deflected mouth and tapering at the hinder end; on the upper edge, 

 running up from the mouth of the case is a flattened wing-like appendage 

 serrated on its upper edge, nearly equal to one-third of the case in length. 



The lower case is dilated near the middle or undulating and near the 

 hinder end above and below there is a slight projection. The case is at- 

 tached to the under surface of the leaf and the mine is an irregular blotch. 



4. C. Pruniella. The larva mines the leaves of wild cherry early in 

 October, when it is more than half grown. 



The case is flattened, having a notch on the upper edge about one-third 

 from the mouth, whence it is curved regularly to the hinder end and the 

 under edge is nearly straight from the mouth to about one-third of the 

 length from the hinder end, where it is deeply notched and curved towards 

 the upper edge thus forming a tail-like appendage. On the upper edge 

 from the uivuith of the case to the anterior notch, the edge is regularly 

 curved. 



5. C. Ostryjc. The larva mines the leaves of Iron-wood. Ostri/<t Yir- 

 'jiiiica in October and during Spring. 



The case is flat, rather wide, and the edges nearly parallel except near 

 its mouth. The upper edge is slightly curved and almost at the hinder 

 end is a slight notch, which is sometimes wanting, and the hinder end is 

 squarely excised. Color of the case pale reddish-brown. 



