THE CALOSOMA BEETLE IN NEW ENGLAND. 5 



in wire cages if desired. The bottoms should be made of a circular 

 piece of board 4 inches in diameter, having a hole in the center 

 covered with netting. To the circumference of this base is tacked a 

 strip of wire netting 10 inches in width. It should be cut long enough 

 to lap at the side, so that it can be sewed with wire. The selvage 

 edge of the wire netting should be used for the top of the cage and 

 care should be taken that the circumference at the top and the bottom 

 are the same. A cover similar to the ones used on the glass jars may 

 then be placed on the top of the cage. These cages should be set 8 

 inches in the ground. After the larvae become full grown they de- 

 scend into the ground and form their pupal chambers Cages of this 



Fig. 2. — Jars for rearing Calosoma beetles : a, Large jar with wooden top and " ladder " ; 

 &, small jar with wooden top ; c, showing construction of top and " ladder " ; d, jar with 

 cheesecloth top held in position with rubber band. (From Burgess.) 



sort should not be disturbed until the following spring. For hiber- 

 nating quarters for beetles ; boxes with bottoms made of wire screen 

 can be used (PL IV). They should be sunk into the ground from 

 18 to 20 inches, the earth inside the box being the same level as that 

 on the outside. A hinged cover provided with, wire netting should 

 be placed on the top of the box and if convenient this cover should be 

 padlocked so that the contents of the box will not be disturbed. 

 Beetles may be placed in hibernation in cylinders (fig. 3) made of 

 galvanized iron wire having a ^-inch mesh. These can be constructed 

 in the same manner as the small cylinders already mentioned. If 

 larvse are to be placed in these cylinders it will be necessary to line 

 them with fine wire screen in order to prevent their escape. This 



