the Tussch and Arrindy Silk-Worms of Bengal. 39 
duce, and, moreover, would occasion loss of time : a very even 
thread, however, may with care be reeled from either the Bughy 
or Jarroo cocoon. 
4th. " The Bughy silk-worm feeds indifferent^ on Byer and on 
Asscen leaves, and is a species in every respect perfectly distinct 
from the insect of the Palma Christi, the latter befhg different in 
size, much less cultivated, and fed in houses as regularly as the 
mulberry worm. I shall not proceed to describe it, as the species 
is not at all included in Dr. Roxburgh's questions. 
" The Jarroo cocoons alluded to above, are so called from being 
produced in the coldest month of the year, say January ; the 
Bughy being about a month before them. The Jarroo are likewise 
annual, and the history of them is nearly the same as that of the 
Bughy ; they are however different, I am assured. The Jarroo 
will eat the Byer leaf if he cannot get the Asseen, but he will 
always prefer the latter, and produce a better cocoon when fed 
on it. His silk is more of a dull colour than that of the Bughy, 
which latter worm the hill people put on the Asseen alone, not 
because it prefers it to the Byer, but because they have greater 
plenty of Asseen than Byer, and, moreover, trim and dress out 
plots of Asseen on purpose for the worms. The principal differ- 
ence between the above two species is, that the natives retain a 
part of the Jarroo cocoons for seed; these they hang out on the 
Asseen trees when the proper season of the moth arrives; when 
the moths come out, the male insects invariably all fly away, but 
the females remain on the trees. These are not impregnated by 
the males bred alortg with them, but, in ten or twelve hours, or 
perhaps one, two, or three days, a flight of males arrive, settle on 
the branches, and impregnate the females; by the bye, the hill 
people calculate good or ill fortune in proportion to the speedy 
or tardy arrival of the stranger males. These insects die as soou 
