Silk-producing Bombycide. | 323 
Artocarpus lacoocha, and was discovered some years ago by the 
late W. Frith, Esq., of Calcutta, who showed me specimens of 
the moth in 1849, but stated that the worm fed on the mulberry 
tree and was not uncommon about Moorshedabad. ‘The moth, 
however, which he then showed me was totally unlike one pre- 
sented by Mr. A. Grote, being larger and of a brown colour. 
Can there be an undescribed species at Moorshedabad ? 
Of B. Bengalensis I have never been able to procure the eggs, 
although Mr. Grote has interested himself in the matter; he now 
reports that for the last year or two the species has disappeared. 
It is probable, however, that it might still be procurable in other 
parts of Bengal where the bread-fruit tree flourishes. From a 
well-executed coloured drawing of the larva, furnished through 
the kindness of this gentleman, I am enabled to record its appear- 
ance as follows:—Head brown; from the head to the middle of 
the sixth segment ashy white or cream colour ; the second and third 
segments wrinkled and slightly intumescent, bearing a few small 
rufous spots; prolegs rufous brown, with blackish tips; from the 
middle of the sixth segment to the anal feet pale rufous-brown, each 
segment dotted with black ; stigmata oval white rings, with a black 
centre; on the dorsal portion of the fifth segment are two slightly 
raised round black spots, from the centre of which radiate narrow 
white stripes, and from which rise the first or anterior pair of 
dorsal spines, which are wholly black ; on the eighth segment are two 
similar spots of a rufous-red colour with white rays, and bearing 
two black spines ; all the other segments bear black dorsal spines, 
with rufous bases; the spine on the centre of the penultimate 
segment very large and strong, thick at the base or lower half, 
and becoming suddenly attenuated and falcate, pointing back- 
wards, the tip only black, the rest pale rufous; the dorsal spines 
are represented as standing erect. Legs rufous-brown, each 
bearing a pointed whitish stripe down its centre. The four an- 
terior segments smooth and without spines. In point of size it 
appears to be far inferior to the larva of B. Hultoni; the four 
anterior segments make no approach to the globular mass which 
characterises that part in the Himalayan species, neither does it at 
all resemble it in the colouring. 
The moth as furnished by Mr. Grote is of an ashy-white, and 
the cocoon that of a true Bombyz. 
