THE ALLIES OF THE RED-LEGGED LOCUST 23 



deposited in a mass of foam-like matter, which the female 

 discharges from the tip of the abdomen. This material soon 

 hardens and forms a protecting case for the eggs. The mantid 



FIG. 13. Japanese Mantid. Natural size 



shown with / I its egg-case in Fig. 13 is a Japanese species 

 (Tinode'ra sinen'sis), which has recently been intro- 



duced in a few places in the eastern United States. 



The color is brown and is to some extent protective, and 



as this inconspicuous coloration may render it easier for the in- 

 sect to approach its prey or to escape notice while waiting for 

 food, it may be classed as an example of aggressive resemblance, 

 which term covers those cases where an animal, in resembling 

 its immediate environment, either in shape or color, or both, 

 is thought thereby to be assisted in attack on its prey. 



Several species of mantids from India resemble different 

 flowers which are visited by insects, and seize upon such 



