NEUROPTEEA, EPHEMER1DA, AND ODONATA 117 



the lower sides of logs, rocks, and trees overhanging 

 the water, where they may be found during June 

 and July. The young drop into the water, and during 

 the larval stage of 

 nearly three years feed 

 on aquatic insects. 

 Respiration is^ accom- 

 plished by the several 

 pairs of tufts on either 

 side of the abdomen. 



Other well-known 

 members of this order 

 are the ant-lion and the 

 aphis-lions or lace-wing 

 flies. The larvae of 

 these as the names suggest feed upon ants and plant lice, 



FlG * 137 - Pu P a of 



bellgramite, natural 



FIG. 138. Hellgramite, natural size. 



and may be found in places frequented by their prey in 

 June and July. 



The May Flies (Ephemerida) . The members of this 

 order are distinguished by their short antennae, large front 

 wings and small hind ones, and two or three slender fila- 



