LEPIDOPTERA. 245 
monograph of Yama-Mai, which may be consulted with profit by 
both cultivators of silk and naturalists.* 


Fig. 223.—Attacus (Bombyx) Yama-Mai. 
Attacus pernyi yields a remarkably beautiful silk, fine, strong, 
and brilliant, which can be spun and dyed with great ease. The 
tissues obtained from it partake of the qualities of ordinary silk, of 
wool, and of cotton. This species of Attacus, which is reared on 
the oak in Mandchouria, has given rise to great hopes in France. 
The cocoons and moths of this worm were exhibited for the first 

Fig. 224.—Cocoon of Attacus (Bombyx) pernyi. 
time at the Universal Exhibition of 1855. They were reared by 
M. Jordan, of Lyons, from some cocoons sent over from China by 
* Le Ver a Soie du Chéne (Bombyx Yama-Mai), son histoire, sa description, ses 
mceurs. 8vo., avec planches coloriées.. A Laval, 4 l’école de sériciculture. 
