(50) 



separate, and hiding under stones and boards change into 

 the pupae, remaining inactive during the winter, and 

 appearing as a moth the following June or July. 



As soon as the webs are seen they should be stripped 

 off, with the few leaves which they cover, and the cater- 

 pillars destroyed. 



Clisiocampa. Sylvatica. HARRIS. TENT CATERPILLAR OF THE 



FOREST. 

 (LEPIDOPTERA. BOMBYCIDJE.) 



Upon the Walnut and Oak fastened to the trunk or 

 larger branches, large tents or webs are frequently seen, 

 resembling in habits the Clisiocampa Americana. The tent 

 contains as many as three or four hundred indi- 

 viduals, and often prove very injurious to the 

 trees infested, defoliating at times a greater por- 

 tion of the tree. When fully grown, the cater- 

 pillars leave the tree and seek some dry, sheltered 

 spot, where they change into the pupae inside 

 a cocoon, resembling in form .and color the 

 Americana. The moths appear from sixteen to 

 twenty days after, depositing the eggs on the 

 tree in clusters, during the autumn. Destroying 

 the caterpillars while in the tents, or gathering 

 the eggs during the winter, is the most effectual 

 way of preventing their ravages. 



CtlSIOCAMPA SYL- 

 VATICA; larva. 



Attacus [ Callosamia~\ Promethea. DRURY. THE PROMETHEA 



SILK WORM. 

 (LEPIDOPTERA BOMBYCID^;.) 



Upon the Sassafras tree, in the winter time, leaves 

 apparently dried and curled are seen hanging from the 

 limbs ; close observation shows this is used as an outside 

 covering for a cocoon. The caterpillar had gathered this 

 around itself, the stem of the leaf made secure to the 



