NOVEMBER, 1861. 167 



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 

 upper 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. Mouth of case not deflected. 

 The mine of the larva is nearly circular. 



3. C. Viburniella. The larva mines the leaves of Viburnum 

 prunifolium 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 attached 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 mouth of the case to the anterior notch, the 

 edge is regularly curved. 



5. C. Ostryce. The larva mines the leaves of iron-wood, 

 Ostrya Virginica, in October and during spring. 



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



