298 Captain T. Hutton on the 
much account, as the worm is too intractable to submit to domesti- 
cation, and can only be reared upon the trees in the open air, 
which of course renders the crop precarious, through the incessant 
attacks of birds and insects. This species was discovered by 
myself at Simla in 1837, but, owing to illness and the subsequent 
breaking out of the Afghan war, was not sent to Europe until 
1842, when the moth was figured by Mr. Westwood in ‘ The 
Cabinet of Oriental Entomology,” under the name of Bombyx 
Huttoni. 
A second species occurs sparingly in Bengal, in the neighbour- 
hood of Calcutta, where it feeds on the leaves of the 4rtocarpus 
lacoocha, and to which I have assigned the name of Bombyx Ben- 
galensis. 
At Singapore, or in its neighbourhood, is a third species, called 
by Mr. Walker Bombyx subnotata, though nothing more than its 
existence appears to be known. 
A fourth species is found in Assam, where it feeds on the leaves 
of the Ficus religiosa or Peepul tree, and is distinguished as the 
Bombyx religiose of Helfer. 
And lastly, so far as continental India is concerned, the Bombyx 
lugubris of Drury is said to occur at Madras, though the state- 
ment appears to require confirmation, and Mr. Moore even doubts 
its being a Bombyx at all. 
These two sections of the genus Bombyx being remarkable for 
the presence in the one, and the absence in the other, of bright 
colours and rows of spines in the larve, led me to entertain a 
suspicion that the Chinese domesticated species are no longer in 
their original condition; and followiug up this idea by a series of 
experiments, I soon discovered that with respect to colouring, the 
Bombyx Mori, and one or two others, when partially reverted to 
a state of nature, show a great and marked approach in the dis- 
tribution and arrangement of their colours to the wild species of 
India. 
Besides the genus Bombyx, this group of the family contains 
the genera Ocinara of Walker, and Trilocha of Moore; of the 
former I have discovered two, if not three, new species, and I 
understand that others have been discovered in Bengal. In the 
Jarva state this genus, although showing alliance with Bombyz, 
appears likewise to approach the Geometre, the caterpillar gene- 
rally having, not only something of the manner of the latter, but 
possessing also several of those curious little excrescences which 
give a Geometer the appearance of a dry stick with withered 
buds. The larve of Ocinara spin a small neat cocoon resembling 
