454 CLASS VIIT. 



Truxalis FABR. (Gryllus Acrida L.). Antenna? depressed, ensi- 

 form. Head conical, longer than thorax. Body elongate. Elytra 

 narrow. Posterior feet very long, with tibia elongate, slender. 



Sp. Truxalis nasutus FABR., Gryllus nasutus L., ROSSEL, Ins. n. Locust. 

 ind. Tab. v. (antennae badly drawn) ; DUMERIL, Cons. gen. s. I. Ins. PL 24, 

 fig. 3; CUVIER, R. Ani. 6d. illustr. Ins. PI. 84, fig. 8, in south of Europe 

 and in Africa ; Trux. variabilis, KLUG, and others, very similar Bpecies ; 

 both the above-named species are also found at the Cape of Good Hope, 

 the first also at Japan ; see DE HAAN, op. cit. pp. 141, 142. Comp. on 

 this genus THUNBERG, Nov. Act. Soc. Upsaliens, ix. 1827, pp. 76 88. 



Proscopia KLUG. Body elongate, apterous. Head elongate, 

 pyramidal, produced beyond the eyes ; antennas subulate, very short, 

 with six or seven joints. Prothorax very long. 



Sp. Proscopia radula KLUG, Cuv. R. Ani. ed. ill. Ins. PI. 85, fig. i, from 

 Brazil, like most of the species (all from America). These animals 

 resemble Phasma in the habitus, and Mantis in the long prothorax. I can- 

 not perceive a groove on the thighs for the reception of the tibise *. 



II. Posterior feet shorter than body. 



Pneumora THUNB. Antennae filiform, with twenty-one to 

 twenty-five joints. Head short, with eyes remote. Prothorax pro- 

 duced into a membranous scutellum ; thorax short. Abdomen in 

 males inflated or vesicular. Greatest part of elytra incumbent 

 horizontally on the back. Elytra and wings short in females ; in 

 some almost quite obsolete, covered by scutellum. 



Sp. Pneumora variolosa, LATR., Gryllus variolosus, L., FABR., Pneumora 

 marmorata, THUNB., STOLL, PI. -20, fig. 78 ; CUVIER, R. Ani. e'd.ill, Ins. 

 PI. 84, fig. i ; from the Cape of Good Hope. The other species also of 

 this genus belong to the south of Africa. 



Phalanx II. Locustarice. Antennae setaceous, long (often 

 longer than body), with joints numerous. Ocelli in most none. 

 Tarsi with four joints. Females furnished with ovipositor bivalve, 

 ensiform. In males the right, or more rarely both elytra, mostly 

 furnished with a basal portion, orbicular, transparent (musical 

 organ). 



1 CHARPENTIER records a winged species from Chili. Elytra were not present; 

 wings very small ; but what seems most to distinguish this species is the absence of a 

 pulvillus or plantula on the tarsus. Hence it might form a distinct genus Astroma 

 (CHARP.) GERMAR'S Zeitschr. in. 1841, s. 305. 



