BULLETIN OF THE BROOKLYN ENT. SOC. II. 1879. 65 



the food-plant be near at hand, greater success will be attained 

 by having light and ventilation free. 



The best method of rearing is probably, to put the larvae upon 

 a limb of a tree with a large space covered with very fine netting. 

 This is especially good for the spinners, though some have a 

 tendency to eat their way through the netting, especially before 

 pupation. 



A wide mouthed glass jar makes an excellent breeding cage. 

 It should be not less than a quart in capacity, and should have the 

 mouth covered closely with fine wire or netting. Ihe bottom 

 should be covered with paper, and from the edge of the paper 

 there should be a number of little sticks by which fallen larvae 

 can easily ascend to the food. 



Ordinary breeding boxes are made (if small) with glass front, 

 with netting on either end, and with a door behind, through 

 which the food-plant can be changed, and the box itself easily 

 cleansed. If large, a small space at each end covered with gauze 

 will suffice for ventilation, and the top can be arranged with a 

 moveable frame closely fitting and covered with close netting or 

 gauze. 



It is preferable we think in large boxes to have them without 

 bottom. They can be placed upon the ground and moved as 

 cleanliness demands. 



Great care must be taken as the time of pupation approaches 

 to secure such larvae as transform beneath the ground. 



Cleanliness is under all circumstances absolutely indispensable. 



Where the ventilation is poor the droppings of the larvae and 

 the wilted parts of leaves should never be allowed to remain 

 a day. 



All sick or dead larvae should be removed at once and at a 

 distance from all others. We think it would be better at once 

 to destroy them. 



If any contagious disease has made its appearance, all larvae 

 attacked should be at once destroyed, and the box should be 

 thoroughly cleansed with dilute carbolic acid water. 



The food is of the first importance, and great care should be 

 taken to have it continually fresh and sweet. It should be put in 

 a bottle containing fresh water, which should be changed every 

 few hours ; the bottle should, so far as not filled with the stems of 



