Caterpillars. 



191 



other, it has little difficulty in bringing them together, as is 

 shown in the following cut, a. 



The prettiest of these parcels are those which are made 

 upon a kind of osier, the borders of whose leaves sometimes 

 form columnar bundles before they become developed. A 

 section of these leaves has the appearance of filigree-work 

 (see 6). 



Nest of Willow-leaf Roller. 



A caterpillar which feeds upon the willow, and whose 

 singular attitudes have obtained for it the trivial name of 

 Ziczac, also constructs for itself an arbour of the leaves, 

 by drawing them together in an ingenious manner. M. 

 Koesel* has given a tolerable representation of this nest, 

 and of the caterpillar. The caterpillar is found in June ; 



* Roese), cl. ii,, Pap. Nocturn., tab. xx. fig. 1, 2, 3, 4, 5, 6. 



