12 Lazvrence Bruncr 



ee. Foveolae lateral or inferior, closed behind, or (frequently) 

 entirely obsolete. Prosternum distinctly, usually decid- 

 edly tuberculate or spined. (Acridiidae.) 



Caloptenidae. 



Families of Gryllotalpoidea 



A. Anterior tibiae greatly dilated and digitate. Antennae filiform, many- 

 jointed. Head without, or provided with but two large ocelli. 

 b. Antennae setaceous, rather long. Elytra membranous, in the male 

 provided with a tympanum. Pronotum elongate oval. Tarsi 

 three-jointed. Posterior legs small, saltatorial, the tibiae some- 

 what dilated. Cerci long and setaceous Gryllotalpidae. 



bb. Antennae very short. Body linear, cylindrical. Elytra almost ab- 

 sent. Posterior legs very short, nonsaltatorial. Tarsi two- 

 jointed. Cerci not apparent. Ocelli absent and the small eyes 



ocelliform Cylindrodidae. 



AA. Anterior tibiae little dilated, three to four spined at apex. Antennae 

 short, moniliform, composed of few joints. Posterior legs strongly 

 saltatorial, the femora dilated ; tibiae slender, four clawed at apex, 

 tarsi single-jointed or aborted. Elytra corneous, without a tym- 

 panum. Head furnished with three ocelli Tridactylidae. 



Families of Achetoidea. 



A. Tarsi compressed, the second joint minute. 

 b. Posterior tibiae moderately robust. 

 c. Posterior tibiae biseriately spinose. 



d. The hind tibiae armed with spines on both sides, the carinae 

 not at all serrated. 

 e. Hind tibiae armed with long, movable hairy spines. The 

 posterior metatarsi unarmed above or provided with 



but a single row of serrulations Nemobiidae. 



ec. Hind tibiae armed with heavy fixed spines, or in some in- 

 stances the spines are partly movable. 

 /. Head globose or very gently depressed, the face ver- 

 tical. The front between the antennae neither 

 swollen nor produced. 

 g. The superior or upper claw of the hind tibiae longer 

 than the intermediate one (rarely of equal 

 length). Ocelli generally disposed in a straight 

 transverse line (occasionally a little arcuate). 

 Hind femora about as long as the tibiae and tarsi 



combined Batrachytrypidae. 



gg. The superior or upper claw of the hind tibiae 

 shorter than the middle one, or of equal length. 



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