166 PAPERS BY DR. B. CLEMENS. 



within the withered flower, and therefore entirely concealed, 

 until they are quite full fed. Others make a case of the husk 

 of a seed, which they have eaten and are very difficult to distin- 

 guish from the untenanted seeds of the plant. The natural 

 orders of plants that seem most frequented by the members 

 of the genus are the Caryophyllacece, the Leguminosce, the 

 Composites and the Labiates ; at least this applies to Europe 

 and probably to our own country. 



The larvae, except when preparing to form a new case, make 

 small mines, and the discovery of a leaf in which there are one 

 or several transparent patches, and both the skins of the leaf 

 entire, with one of them pierced with a minute hole, is a very 

 certain indication that it has been the work of a Coleophora 

 larva. 



The larvae hybernate in their cases during the winter and 

 produce imagos in the following summer, "feeding up" during 

 the spring. 



Some of the insects named here from the larvae may, pos- 

 sibly, have been named and described in the perfect state. 



1. C. carycefoliella. The larva mines the leaves of hickory 

 in September and October. The head and body is reddish- 

 brown, somewhat darker on the second and third rings. 



The case is small, dark brownish, and in form is a flattened, 

 simple cylinder. The larva feeds only in small, rectangular 

 patches, of which there are usually several in the same leaf. 

 The case is fixed to the under surface, and the larva feeds in 

 one patch until it is compelled to remove its entire body from 

 its case, and then removes to another part of the leaf to form 

 a new mine. The fall larvae may doubtless be taken in the 

 spring or early summer. 



I 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. corylifoliella. The larva mines the leaves of hazel 

 in September and October. It is pale brown, with dark- 



