The Capture, Preparation, and Preservation of Specimens 



an outbuilding, all the openings leading from which should be 

 carefully closed so as to prevent the escape of the caterpillars. 



How to Find Caterpillars.— Many species of caterpillars are not 

 hard to discover; they are more or less conspicuous objects, and 

 strike the eye. Some species conceal themselves by weaving 

 together the leaves of the plant on which they feed, or by bending 



Fig. 50. — Breeding-cage: a, base, battened at^to 

 prevent warping; b, removable body of cage, in- 

 closing zinc pan /, /, containing jar for plant, d, 

 and filled with five inches of soil, e; c, removable 

 top, covered with wire gauze. The doors and 

 sides are of glass (Riley). 



a single leaf into a curved receptacle in which they lie hidden. 

 Others conceal themselves during the daytime about the roots of 

 trees or under bark or stones, only emerging in the night-time to 

 feed upon the foliage. The collector will carefully search for 

 these. The presence of caterpillars is generally indicated by the 

 ravages which they have committed upon the foliage. By care- 

 fully scanning a branch the collector will observe that the leaves 



36 



