64 GENERAL ZOOLOGY 



colors are conspicuous. It is usual 

 to account for the coloration of the 



anterior wings by the prin- 

 ciple of protective resem- 

 blance. 



Hawk Moths. The hawk 

 moths or sphinx moths (Fig. 

 42) are easily recognized 

 by the stout conical body, 

 long coiled proboscis, nar- 

 row pointed wings, and the 

 slender antennae. They are 

 dressed, for the most part, 

 in quiet olive and brown 

 tints and fly chiefly at twi- 

 light. Their larva? are large 

 naked caterpillars, often 

 with a curved horn near the 

 posterior extremity. The 



/ 



FIG. 42. A sphinx moth. (Slightly 

 less than natural size) 



Adult, larva, and pupa 



