142 SATURNIA CYNTHIA. 



with a broad transverse light-coloured band near 

 the middle, the space within which (forming nearly 

 an equilateral triangle) is brownish-grey, and that 

 without ash-colour, running into brownish-grey at 

 the margins of the wings ; just within the margins 

 there are two narrow brown streaks running parallel 

 with them, somewhat interrupted before reaching a 

 black spot near the apex of the superior wings ; 

 this spot is surmounted by a white crescent, and 

 a zigzag white line runs from it to the tip. The 

 basal portion of the superior wings is traversed by 

 an ash-coloured bar, commencing on the posterior 

 edges next the shoulder, and after continuing nearly 

 in a straight line for about half an inch, is suddenly 

 deflected and terminates on the anterior margin; 

 between this bar and the transverse serpentine line, 

 there is a pale longitudinal spot surmounted with 

 black. The under wings likewise bear a similar 

 spot, but more crescent-shaped ; and towards their 

 base, there is an ash-coloured arched bar, bounded 

 on the outer side with black. The under side differs 

 principally in being paler and destitute of the angu- 

 lar and arched bars at the base of the upper and 

 lower wings. 



The caterpillar of this moth is the Arrindy silk- 

 worm, for an account of which we are indebted to 

 Dr. Roxburgh, who published an interesting me- 

 moir on the silk-producing moths of the East Indies 

 in the 7th volume of the Linnean Transactions. The 

 eggs are described by him as numerous, ovate, pure 

 white, about the size of a large pin's head. They 



