COCKROACH. 117 
The Blatta heteroclita is an insect which is of a 
shorter and rounder shape than the rest of the 
genus: it is of a black colour, with white spots, 
and is distinguished by the remarkable circum- 
stance of having three spots on one wing-sheath, 
and four on the other: it is a native of India. 
The eggs in the genus Blatta are deposited in 
a kind of connate groupe, appearing at first view 
like a large single ovum. 
