HOW TO KNOW THE BUTTERFLIES 



keeps its bed very clean and never bites into the 

 leaf on which it is spread. That bird would be 

 brave indeed which would touch 

 one of these caterpillars if it 

 simply saw the front end of the 

 body ; the thorax with its fierce 

 yellow eye-spots looks like the 

 head of a wicked little green 

 snake; and this deceptive ap- 

 pearance is heightened when the 

 scent organs are shot out forked, 

 like a snake's tongue, while the 

 caterpillar rocks itself to and fro 

 with a most insidious motion. 

 This false face deceives even the 

 novice in entomology who be- 

 lieves these spots are true eves, 

 Fig. 26.— The larva of whereas the latter are mere dots 



the tiger swallow-tail ,, . , r ,, .,, 



upon us bed. on the head of the caterpillar. 



In the far North the tiger 



swallow-tail is single-brooded ; it is double-brooded 



in New York State and triple-brooded in the 



Gulf States. It passes the winter as a chrysalis. 



Yes ! There came floating by 



Me, who lay floating too, 

 Such a strange butterfly ! 



Creature as dear as new : 



54 



