LEPIDOPTERA. 409 



second moulting, they change to an orange-colour, that of the body- 

 gradually becomes lighter, in some approaching to white, in others 

 to green, and tbe black spots gradually become the colour of the 

 body ; after tbe fourth and last moulting, the colour is a dirty white, 

 or a dark green : the white caterpillars invariably spin red silk, the 

 green ones white. On attaining its full size, the worm is about 

 three and a half inches long ; its colours are uniform and dull ; the 

 breathing-holes are marked by a black mark ; the moles have become 

 the colour of the body, and have increased to long fleshy points, 

 without the sharp prickles the Moonga worm has ; the body has a 

 few short hairs, hardly perceptible. 



" In four days the cocoon is completed. The hill tribes settled in 

 the plains are very fond of eating the chrysalis." 



" The Arrindy Arria, or Eria silkworm is reared over a great part 

 of Hindostan, but more especially in the districts of Dinajpur and 

 Kangpur, in houses in a domesticated state, and feeds chiefly on the 

 leaves of Hicinus communis. The silk of this species has hitherto 

 never been wound off, but people were obliged to spin it like 

 cotton. 



" It is so productive as to give sometimes twelve broods of spun 

 silk in the course of the year. The worm grows rapidly, and offers 

 no difficulty whatever for an extensive speculation." — (Dr. Heifer, 

 Journ. As. Soc. Beng. (1837), p. 45.) 



In the Journal of the Agricultural and Horticultural Society of 

 India, vol. II. part II. p. 61, is an account of the successful experi- 

 ment of winding off the silk from the cocoon of the Eria worm. 



Some further accounts also appear in the Transactions of the 

 Entomological Society of London for December, 1854, and reprinted 

 in the Agricultural and Horticultural Society's Journal of India, 

 vol. IX. pt. II. p. 29. 



931. ATTACUS GUERINI, Moore. 



Attaeus Guerini, Moore, P. Z. S. (1859), p. , pi. LXII. 

 fig. 2. 



a. b. c. Bengal. From the Asiatic Society of Bengal. 



Attaeus Guerini, n. sp.? — Distinguished from A. Cynthia and 

 A. Bicini by its smaller size and darker colour, the fore-wings having 

 the two transverse white lines joined together about the middle, the 

 junction forming a somewhat rounded spot, and by its being without 

 the lunate vitreous streak, which is replaced by a small yellowish 



