COCKROACH. 1 1 7 



The Elatta heterodita 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. 



