212 



SUBKINQDOM ARTICULATA. 



rough figure of a human skull, emits a plaintive squeal, 

 when disturbed. 



Mg. S62. 



Acheronda aMpos, Death's-head Moth. 



BombycidEe. — Tlie Common Silk-worm spins its thread 

 from a spinneret placed near the mouth. Its cocoon is 

 formed by the larva attaching a few threads lengthwise to 

 adjacent objects, and then turning itself around, thickening 

 the walls with a continuous thread, often one thousand feet 

 long. The Tent Caterpillar deposits its eggs in a bunch 



Fig. S6S. 



Fig. S6U. 



^^y^'^Wp^iynrn,"!^^ , 



\l^^ 





Bombyx mori. 

 Silk-worm Moth and Cocoon. 



Clisiocampa americ^na. 

 Tent Caterpillar. Eggs, Larva, Imago. 



