14 INSECTA. 
The only species known—Blatta acervorum, Panz. Faun. In- 
sect. Germ., LX VIII, 24—lives in ant-hills(1). 
Sometimes the elytra and wings are tectiform, and the tarsi are 
quadriarticulated. The antennz are always very long and setaceous. 
The mandibles are less dentated, and the galea is wider than in the 
Grylli. The females always have a projecting ovipositor, com- 
pressed, and in the form of a sabre. 
They have but two ceca, like the preceding Insects, but the biliary 
vessels surround the middle of the intestine, and are inserted directly 
into it. 
These Orthoptera are herbivorous and form the genus 
Locusra, Geoff. Fab.—Gryllus tettigonia, Lin. 
Such for instance are the 
L. viridissima, Fab.; Roes., Insect., IL., Gryll, cen Two 
inches long; green and immaculate; ovipositor of the female 
straight. 
L. verrucivora, Fab.; Roes., Ib., vir An inch and a half 
long; brown; elytra spotted with brown or blackish; ovipositor 
of the female recurved. It bites with considerable severity, and 
it is said that the Swedish peasants are in the habit of making 
it bite the warts on their hands, and that in consequence of 
those excrescences receiving into the wound the black and bi- 
lious fluid poured into it by the Insect, they become desiccated 
and_ disappear. 
Several species of this genus are apterous, or have but very 
shortelytra. Such is the , e . 
L. ephippiger, Fab., Ross., Faun. Etrusc., Il, viii, 3, 4(2). 
(1) It is the subject, if I mistake not, of a Memoir from the pen of M. Paul 
Savi. 
(2) This species, and some others, in which both sexes are almost apterous, or 
present at most but very short elytra resembling rounded and arched scales, 
form the genus Eruirricer of my Fam. Nat. du, Regn. Anim. That of Anisop- 
TERA is composed of species the males of which are winged, and the females ap- 
terous or merely furnished with very short elytra; such are the Z. dorsalis, bra- — 
chyptera, of M. Toussaint Charpentier. The species provided with ordinary elytna 
and wings, in which the antennz are simple, and the front is not elevated pyra- 
midically, form the genus Gryxivs proper. Suchyare the first two species above 
described. Add to them the Locusta varia, Fab.; Panz., Ib., SRK 7. 
fusca, Ib., ii;—L. clypeata, tb., iv;—L. denticulata, Ib.,v. His Gryllus probosci- 
deus, Ib., XXII, 18, is the Panorpa hiemalis. 
See also De Geer, Herbstein, Donovan and Stoll, Santeralle a sabre, pl. i—xii; 
Lat., Gener. Crust. et Insect., Ii, p. 100. 
