


246 THE INSECT WORLD. 
the missionaries. It is much to be desired that this species 
may be acclimatised in Europe. 
Figs. 224 and 225 represent, after drawings in the memoir 
of M. Guérin-Méneville, already referred to, the cocoon and 
moth of the Attacus perny?. 
The silk which Attacus Mylitta produces is perhaps superior to 
that of Pernyz. When the cocoons are properly prepared, the 
silk can with ease be wound off from one end of them to the other. 
This worm is found in various parts of Bengal and of Calcutta, and 
also at Lahore, and its silk is exported in considerable quantities 

Fig. 225.—Attacus (Bombyx) pernyi. 
under the name of fusseh. Brownish stuffs are made of it in India 
of firm and bright texture, which are used for summer clothing, or 
for covering furniture. 
Figs. 226 and 227 represent the moth and the cocoon of Aftacus 
Mylitta after M. Guérin-Méneville. 
In 1855, M. de Chavannes reared this species in the open air, 
near Lausanne, in Switzerland. This treatment succeeded per- 
fectly, without any degeneration, for many years. It, however, 
died out at last, from the effects, perhaps, of too great a difference 
in the climate, or from those accidents, still so little under- 
stood, to which even the insects of our own country are sub- 
ject. This was unfortunate, as this species is one of those 
whose acclimatisation in Europe is the most to be desired, for it 
would render great service to the cultivators of silk. 
