Cockroaches, Locusts, Grasshoppers, and Crickets 155 



l.ke remnants of wing-covers. These latter kinds can sing because the parts 

 retained are the sound-producing bases of the wing-covers. The genus 



FIG. 214. Diestrammena marmorata, male; a Japanese locust species found in Minnesota. 

 (After Lugger; natural size.) 



Ceuthophilus (Figs. 213 and 215) includes the various species of stone, 

 or camel, crickets found all over the country, recognizable by their thick, 



FIG. 215. Ceuthophilus lapidicolus, female. (After Lugger; natural size 

 indicated by line.) 



smooth, wholly wingless, brownish body with arched back and head bent 

 downwards and backwards between the front legs. They are nocturnal, 



FIG. 216. FIG. 217. 



FIG. 216. The shield-backed grasshopper, Atlanticus pachymerus, male. (After Lug- 

 ger; natural size indicated by line.) 

 FIG. 217. The California shield-backed grasshopper, Tropizaspis sp., female. (Nat. size ) 



and during the day hide under stones or logs along streams or in damp woods. 

 The individuals of a species which live in the burrows of certain turtles in 

 Florida are called "gophers." Perhaps the commonest species, extending 

 from New England to the Rocky Mountains, is the "spotted wingless grass- 



