312 



ARTICULATA: INSECTA. 



Some of the broad-winged or Silk-worm Moths or Bom- 

 bycidre, as Cecropia, Promethea, Polyphemus (Fig. 400), 

 Luna, Regal Walnut Moth, etc., are remarkable for th en- 

 large size; others, as the beautiful De'iopeia and the 

 Wood-Nymphs (Eudryas), are remarkable for their beau- 

 ty ; and all in the larva state spin silken cocoons, in which 

 they pass into the pupa state. One species, the " Silk- 



FlG. 401. 



Beautiful Delopeia, Delopeia bella, Drury. 

 FIG. 402. 



Silk-worm Moth, Bombyx mori, in the larva state. 



worm " (Figs. 402-3), produces the greater part of the 

 silk used in the world. One of the most common of the 

 small broad-winged moths, is the Tent-caterpillar Moth, 

 which in the larva state lives upon neglected apple trees, 

 and upon wild-cherry trees, and spins the well known tent- 

 like nests. 



