304 Captain T. Hutton on the 
Bombyx Mori. . Fab. Spec. Ins, i. p. 180; Mant. Ins. 
ii. p. 114; Ent. Syst. iii. 1, p. 431; 
God. Lep. de France, iv. p. 153, pl. 
14, f. 3,4; Walker, List Lep. Het. 
Brit. Mus. pt. 6, p. 1505; Moore, 
Cat. Lep. Mus. Ind. House, ii. p. 
B74. 
Sericaria Mori . . Blanchard, Gay, Hist. de Chile, Zool. vii. 
p- 55. 
Lasiocampa Mori . Schranck. 
Lasiocampe du Murier Boitard, p. 148. 
The common domesticated Chinese silkworm of Europe. 
Alabitat.—Originally the northern mountainous provinces of 
China, especially that of Tche-kiang; now domesticated in China 
generally, in Cashmere, Afghanistan, Bokhara, Persia, Syria, 
France, Italy, Spain, Sweden, Russia, &c., and recently intro- 
duced into Oudh and the Punjab. 
The species termed by the late Dr. Royle “ Pat major ” refers not 
to this, but to the Bengal Annual known as Boro-pooloo, while that 
mentioned by Dr. Helfer in the J. A. S. B. vi. p. 41, as cited in 
Mr. F. Moore’s “ Synopsis,” probably refers to one of the monthly 
worms which have hitherto passed under the name of B. Mori, a 
species which, at the time when the Doctor wrote, was confined to 
Cashmere, and was certainly not cultivated in any part of Bengal 
or the Lowland Provinces. 
The word “ Pat” appears to be used as a generic term. 
Larva.—Originally from the Northern parts of China, the worm 
of Bombyx Mori is now extensively cultivated for its silk, in 
various countries both of Asia and of Europe, and everywhere 
thrives best where the temperature is moderate. It is the largest 
and the strongest of the domesticated species, and is an annual, 
producing naturally but one crop of silk in the year, although in 
certain temperatures it is possible to make it produce a second 
crop. 
When first excluded from the egg the young caterpillar is hairy 
and of a dark-brown colour, the edge of the anterior segment 
being ashy white ; the head and prolegs are shining jet black. 
In the course of four or five days the five anterior segments 
become slightly swollen, exhibiting a mottled appearance of brown 
dots and small patches on a livid ashy ground, and previous to the 
first moult these segments become altogether livid ashy, while the 
others are of a pale brown; there is one short tubercle or spine 
on the middle line of the penultimate segment, and the hairy ap- 
