118 



ZOOLOGY. 



inner surface of the hind legs against tne outer surface of 

 the front wings (some locusts); third, by rubbing together 



Fig. 142.— Rocky Mountain Locust; b, Keel -'egged Locust, 



Fig. 143. — An African Mantis, or soothsayer, with its egg-mass. 



the upper surface of the front edge of the hind wings and 

 the under surface of the wing-covers during flight (some 

 locusts). 



