ORTHOPTERA. a 
Zaques, and are a source of continued irritation to the inhabitants on 
account of the devastation they occasion. They not only devour our 
articles of food, but attack cloth, linen, silk and even shoes. They 
also eat Insects. Certain species of Sphex are constantly at war 
with them. 
B. orientalis, L.; De Geer, Mem. Insect., III, xxv, i, 7. 
Length ten lines; reddish chesnut-brown; wings of the male 
shorter than the abdomen; those of the female mere rudiments. 
The eggs of the latter are enclosed symmetrically in an oval 
and compressed shell, first white, then brown, and serrated on 
‘one side. The Insect carries it for some time at the anus, and 
then fixes it by means of a gummy matter to various bodies. 
This species is a scourge to the inhabitants of Russia and Fin- 
land. It is said to be originally from Asia, and according to 
some authors from South America. 
B. lapponica, L.; De Geer, Ib.:8, 9, 10. Blackish brown; 
margin of the thorax of a light grey; elytra of the same colour. 
It attacks the stock of dried fish which the Laplanders use in- 
stead of bread. In Europe it inhabits the woods. 
B. americana, De Geer, Ib., xliv, 1, 2, 3. Reddish; thorax 
yellowish with two brown spots and a margin of the same co- 
lour; abdomen reddish; very long antenne.—America. 
M. Hummel, member of the Soc. Imp. Nat. Mosc., in the first 
number of his Entomological Essays, has given us various interest- 
ing observations on the history of the B. germanica, Fab., a species 
of a light reddish or fulvous colour, with two black lines on the 
thorax(1). 
Mantis, Lin. 
Where we also find five joints in all the tarsi, and wings simply 
plaited longitudinally; but the head is exposed and the body narrow 
and elongated. | 
They also differ from the Blatte in their short palpi terminating 
in a point, and in their quadrifid ligula. 
(1) For the other species, see De Geer, Ib.; Fab.; Oliv., Encyc. Méthod.; 
Fuels., Arch. Insect., tab. xlix, 2—11; Coqueb., Ilust. Icon. Insect., III, xxi, 1; 
B. pacifica, and Touss. Charpent., Hore Entomol., p. 71—78. As to the Blatta 
acervorum of Panzer, see the subgenus Myrmecorurza Of the following family. 
Those Blattz in which one of the sexes at least is destitute of wings, such as the 
B. orientalis, and the B. limbata, and B. decipiens, of Hummel, in our Faun. Nat. 
du Rég. Anim., form the genus Kakerzac. 
