100 
LECTURE IX. 
sects of the Locust and Grasshopper tribe; the 
Cockroaches ; the Lantern-Flies ; the Cicad®, and 
many others, some of large and some of very small 
size. 
The genus called Blatta or Cockroach is dis- 
tinguished by the flattened form of the body ; by 
a pair of long, bristle-shaped horns at the head, 
by the wings lying horizontally over the body, 
and by a pair of tips or processes resembling short 
horns at the end of the body. The Cockroaches 
are a numerous and disagreeable tribe ; generally 
running very swiftly, chiefly appearing by night, 
and feeding on almost all kind of animal sub* 
stances: they are mostly natives of warm cli- 
mates : the species now so very common in this 
country, and especially in the metropolis, is sup- 
posed to have been originally imported from the. 
Eastern regions ; it has obtained among the Lon- 
don vulgar the very improper title of the Black 
Beetle^ a name which not only confounds it with a 
species of real Beetle, emphatically so called in 
the country, but also leads people erroneously to 
suppose it of the Beetle tribe or order Culeoptera. 
It is the Blatta Orientalis of Linnaeus, and sltould 
loe called tlie Eastern or Oriental Cockroach. To 
