144 INSECT As 
The tarsi of the Dermestes atomarius of De Geer having appeared 
to M. Leclerc de Laval to be composed of but one joint, with this In- 
sect and some others we formerly established a new division of the 
Coleoptera, that of the Monomera, which has been adopted by M. 
Fischer in his Entomographia Imperii Russici, and who, with this 
Insect, has formed anew genus, which he names Clambus. But it 
appears—Gyllenh., Insect. Suec. LV, p. 292, 293—that M. Schuppel, 
who of all our entomologists has accustomed himself the most to 
minute and delicate observations, has made the same section under 
the name of Pti/ium. M. Gyllenhall, had united the species with 
the Scaphidia, and, in fact, we think that the proper situation of this 
new genus will be found in the vicinity of the latter. 
ORDER VI. 
ORTHOPTERA *, 
In the Insects of this order, partly confounded by Linnzeus with 
the Hemiptera, and re-united by Geoffroy to the Coleoptera, but as a 
particular division, we find the body generally less indurated than in 
the latter, and soft, semi-membranous elytra, furnished with nervures 
which, in the greater number, do not join at the suture in a straight 
line. Their wings are folded longitudinally, most frequently in the 
manner of a fan, and divided by membranous nervures running in the 
same direction. The maxille are always terminated by a dentated 
and horny piece covered with a ga/ea, an appendage corresponding 
to the exterior division of the maxillee of the Coleoptera. They have 
also a sort of tongue or epiglottis. 
The Orthoptera + undergo a semi-metamorphosis, of which all the 
mutations are reduced to the growth and development of the elytra 
and wings, that are always visible in a rudimental state in the nymph. 
As both this nymph and the larva are otherwise exactly similar to the 
perfect Insect, they walk and feed in the same way. 
The mouth of the Orthoptera consists of a labrum, two mandibles, 
as many maxille, and four palpi; those of the jaws always have five 
joints; whilst the labials, as in the Coleoptera, present but three. The 
mandibles are always very strong and corneous, and the ligula is con- 
stantly divided into two or four thongs. The form of the antennz 
varies less than in the Coleoptera, but they are usually composed of 
a greater number of joints. Several, besides their reticulated eyes, 
have two or three small simple ones. The inferior surface of the first 
* The Ulonata, Fab. 
+ In ‘this oder and in those of the Lepidoptera, Hymenoptera, and Rhipiptera, 
as well as in the Apterous Hexapoda, there are no aquatic species. 
