ORTHOPTERA. 151 



Those species in which the body is filiform or linear, resembling a 

 stick, are the 



Phasma, Fab. 



Several are altogether apterous, or have but very short elytra. 

 Very large ones are found in the Moluccas and South America. 

 The South of France prodvices the 



Ph. rossia, Fab.; Ross., Faun. Etrusc, II, viii, 1. Both 



sexes apterous ; yellowish green or cinereous brown : antennae 



very short, granose, and conical ; legs ridged ; a tooth near the 



extremity of the thighs *. 



Those in which the body, as well as the legs, is much flattened and 



membranous, compose the genus 



Phyllium, Illig. 

 Such for instance is the celebrated 



P. siccifolium; Mantis siccifoHa, Lin. Fab.; StoU, Spect., 

 VIII, 24 — 26. Extremely flat ; pale green, or yellowish ; tho- 

 rax short, Avith a dentated margin ; dentated leaflets on the 

 thighs. The female is furnished with very short antennae and 

 elytra as long as the abdomen, but is destitute of wings. The 

 male is narrower and more elongated, with long setaceous an- 

 tennae, short elytra, and wings the length of the abdomen. 



This species is bred by the inhabitants of the Sechelles as an 

 object of commerce. 



The male of another species is figured by StoU, Mantes, pi. 

 xxiii, 89. 



FAMILY II. 



SALTATORIA. 



The posterior legs of the Insects which compose our second family 

 of the Orthoptera, are remarkable for the largeness of their thighs, and 

 for their spinous tibiae, which are adapted for saltation. 



The males summon their mates by a stridulous noise, vulgarly 

 termed singing. This is sometimes produced by rapidly rubbing 

 against its antagonist an interior and more membranous portion of 



\ided with elytra and wings that cover the greater part of their abdomen ; and 

 Phylltum, where the prothorax is almost as long as the mesothorax ; the females 

 are destitute of wings and have very short anteauce, while the males have long ones 

 and are winged, but with very short elytra. These individuals having the pro- 

 thorax very long, in a natural order we should reverse the series, and begin with 

 Phyllium. 



* For the other species, see the figure of Stoll, germs' Spccf mm; Lichtenst., 

 Monog. Mant. ; Lin. Trans., VI, genus Phasma; Lin. Trans., XIV; Palis, de Beauv. 

 Insect. d'Afr. et d'Amer. See also Charpent., Hor. Entom., p. 93, 94. The two 

 species of Phasma, described by the latter — rossium and cfaUicum — belong to the 

 genus Bacillus, already mentioned. 



