ORTHOPTERA. *" 



and eaten in Barbaiy as above described. The natives of Sene- 

 gal dry another, the body of which is yellow, spotted witli llack ; 

 they then, as I have been told by M. Savigny, reduce it to 

 powder, and employ it as Hour. It is figured by Shaw and De- 

 non. These two species and several others have a conical pro- 

 jection of the pryesternum, and compose my genus Acrydium, 

 properly so called. Of those which do not present this charac- 

 ter, bnt' have likewise filiform antennae, some are furnished with 

 wings and elytra in both sexes. They belong to the genus which 

 1 have named CEdipoda. 

 Of this number are the two following Acrydia of authors, 



Gryllm stridulus, L. ; Roes., lb., XXI., 1, 23. Deep brown or 

 blackish; thorax raised into a carina ; wings red, with the ex- 

 tremity black. 



Gri/llus ccemlcscens, L. ; Rces., lb. XXI, 4. Wings blue, some- 

 what "tinged with green, and m irked with a black band *. 

 In other Acrydia, also winged, and with filiform antennae, the su- 

 perior portion of the thorax is very elevated, strongly compressed, 

 and forms an acute crest, rounded and prolonged posteriorly. Certain 

 species foreign to Europe are very large. The south of Europe pro- 

 duces one that is smaller, the Acrt/dium arinatum, Eisch., Entomog. 

 Imp. Russ., I, Orthop., I. 1. 



In the others, G. pedes for — Giornof, Charpent. — one at least of the 

 two sexes has elytra and very short wings, not at all adapted for 

 flight. They form my new genus Podisma. 



Those Acrydia in which the extremity of the antenn?e is inflated in 

 the form of a butt(m, either in one sex or both, constitute the genus 

 GoMPHocERUs, Thunb. Such is the 



A.sibiricm; G. silnricus. Fah.; Panz., Faun. Insect. Germ., 



XXIII, 20. Anterior tibiae of the males strongly inflated and 



clavate. Found in Siberia and St. Gothard. 



In the second division of the genus of the Acrydia the praesternum 



receives a portion of the under part of the head into a cavity; the 



ligula is quadrifid ; the tarsi have no pellet l)etween their hooks. 



The antennre are composed of but thirteen or fourteen joints. 

 The thorax is prolonged posteriorly in the form of a large scutel- 

 lum, sometimes longer than the body, and the elytra are very small. 

 These Orthoptera form the genus 



Tetrix, Lat. — Acnjdium], Fab. — partim GryUus-bulla, Lin. 

 It consists of very small species. 



*• Add G. lji(julfulu.<, I'anz., lb., XXXIII, 6 -,—0. rjrossKS, lb. 7 ;-—0. penestris, 

 lb., 8; G. lineah(s, lb., 9; and see De Geer — Santerelles de passacje, pi. i— xiii, 

 with the exception of the figures quoted under Trihvalis ; — Olivier — article Criquet of 

 the Encyc. Method.; and the other authors quoted by Fabricius, under his genus 

 G)7///i(s, "such as Schjeffer, Herbst., Drury, Roes., &c. See also Lat., Gen. Crust, et 

 Insect., Ill, p. 10-1. These references, however, are only applicable to the genus 

 Acrydi'im as originally established, or with the subtraction of those here indicated, 

 and which may be considered simple divisions. 



f Acn/dium subnlatum, Fab.; De Geer ; SchaeflF., Icon. Insect., cliv, 9, 10, clxj, 

 2, .3 ; — A. bipuncfahitn, Panz., lb. V, 18, var. ; — A. scutellahim, De Geer, M. lasept., 

 Ill, xxiii, 15. See also Herbst,, Archiv, Insect., lii, 1 — 5. 



