WEALTH OF INSECT LIFE 



177 



FIG. 143. The home of the stone-fly and the caddis-fly. 



phosis. It includes such forms as the cockroach, ear- 

 wig, praying mantis, walking-stick, cricket, katydid, 

 and grasshopper. The term is derived from opftfe, 

 orthos, straight, and Trrepdv pteron, wing. 

 12 



