STRAIGHT- WINGED INSECTS. 159 



trees, and bushes, and never come to the ground ; 

 these are on this account called Tree-Crickets. Others 

 live only on the ground, and aie known by the name 

 of Field-Crickets. Others still live in the walls of 

 houses and are called House-Crickets. 



The Tree- Cricket, also called Climbing- Cricket, Acheta 

 nivea, Plate V. Fig. 26, is a very delicate insect, of 

 a pale ivory color, with long antennes, and a short 

 body, only half an inch in length : its wing-covers are 

 thin, transparent, and ornamented with three oblique, 

 raised lines. 



Like the Katy-did it is often seen creeping upon 

 the leaves of trees and shrubs, without being recog- 

 nised as the little creature whose loud and shrill sound 

 is so familliar. Only the male cricket produces this 

 sound, which it does by elevating its sharp wing-covers 

 very high and rubbing them together very rapidly. — 

 The process may be distinctly seen by keeping one 

 under a glass tumbler, and watching its movements. — 

 They are however quite difficult to catch, as they con- 

 ceal themselves behind the leaves during the day and 

 night, and only occasionally come out of their shady 

 abode. 



In the beginning of Autumn the female makes in- 

 cisions into the tender branches upon which it dwells 

 and therein deposits her eggs. These are not hatched 

 until the commencement of the following summer, 



