CLASS HEX A POD A. 



77 



FIG. 131. 



in quite a different light. Originally from China, it now 



thrives in all the warmer 



countries. A single cocoon 



has been known to yield a 



strand of silk one thousand 



feet in length.* 



The second group of 

 Lepidopterous insects in- 

 cludes those which are gen- 

 erally diurnal (di ur'nal), 

 have the antennae knobbed 

 at their extremities, and 

 when at rest, elevate the 

 wings so that their upper 

 surfaces are juxtaposed 

 (placed close together). 

 The larvae never spin a co- 

 coon in which to undergo 

 their metamorphosis, but suspend themselves in some 

 convenient manner, being covered with a hard shell. 



The imago of the Cab- 

 huge Butterfly is familiar 

 to all as the light straw- 

 colored Butterfly, with 

 dark markings, seen dur- 

 ing the warmer months 

 flitting along the road- 

 side, or over our garden- 

 plats. The larvae of this 

 and kindred species do great harm in our vegetable gardens, 

 occasioning the loss of thousands of dollars annually. 



Bbm'byx mo' n. 

 Silk-worm Moth and Cocoon. 



FIG. 132. 



Pll'ris olera'ce.a. Cabbage Butterfly and Pupa. 



* Tradition has it that the Silk-worm was smuggled into Europe, about the 

 middle of the sixth century, by monks who concealed them in their walking-staves. 



