234 



AN INTRODUCTION TO ENTOMOLOGY 



B. Antennae long and setaceous, except in the mole-crickets and sand-crickets; 



tarsi three- or four-jointed; organs of hearing situated in the fore tibis; 



ovipositor elongate, except in the mole-crickets and sand-crickets, with its 



parts compact. 



C. Tarsi four-jointed; ovipositor, when exserted, forming a strongly- 

 compressed, generally sword-shaped blade, p. 234 Tettigoniid^ 



CC. Tarsi usually three-jointed, except in the pigmy mole-crickets where 

 they are reduced; ovipositor, when exserted, forming a nearly cylindrical, 

 straight, or occasionally upcurved needle, except in the Trigonidiinas. 



p. 242 Gryllid^. 



BB. Antennse short; tarsi three-jointed; organs of hearing situated in the 

 first abdominal segment; ovipositor short, with its parts separate. 



p. 252 LoCUSTIDiE 



AA. Hind femora closely resembling those of the other legs, and scarcely if at 

 all stouter or longer than the other femora, i. e., not fitted for jumping; 

 organs of flight. in a normal position when immature; stridulating organs 

 not developed. 

 B. Body elongate; head free; pronotum elongate; legs slender, rounded; 

 cerci jointed or without joints; walking insects. 



C. Front legs simple; cerci without joints, p. 260 Phasmid^e 



CC. Front legs fitted for grasping; cerci jointed, p. 262. . .Mantid/E 



BB. Body oval, depressed; head wholly or almost wholly withdrawn beneath 



the pronotum; pronotum shield-like, transverse; legs compressed; cerci 



jointed; rapidly running insects, p. 263 Blattid^e 



Fig. 243. — Dorsal view of end 

 of abdomen of Dissosteim 

 Carolina, male: qT, ioT, 

 iiT, ninth, tenth, and elev- 

 enth terga; s, supra-anal 

 plate; py podical plate, c, 

 cercus; ex, coxale. 



Fig. 244. — Side view of end of abdomen 

 of Dissosteira Carolina, male; lettering as in 

 Figure 243. 



FAMILY TETTIGONIID^ 



The Locustidae of Authors* 



The Long-horned Grasshoppers 



To this family belong the most attractive in appearance of our 

 common Orthoptera. In many of them the wings are graceful in 



*The name Locustidag has been commonly applied to this family. This usage 

 is the result of an erroneous application of the generic name Loctista to certain 

 members of this family. The insects of the genus Locusta, established by_ Lin- 

 naeus, and other insects commonly known as locusts, are members of the family to 

 which the common name short-horned grasshoppers is applied and which is 

 properly termed the Locustidce. 



The Tettigoniidae is the Phasgonurida; of Kirby's catalogue. 



