C0SSUS LIGNIPBEDA. 61 



efforts at either one or the other for nearly a month, 

 but at last quietly settled down, with its body bent 

 round into a curve, like the other I had seen in its 

 cocoon. 



In this state it remained quite motionless until the 

 beginning of July, when towards the end of the first 

 week it suddenly gave forth a most penetrating odour, 

 a portent of some change. On uncovering the pot I 

 perceived it writhing about. This continued for four 

 days, during the second of which I saw it was pupa- 

 ting, which seemed a very difficult operation and was 

 only completed on the fourth evening. 



The moth, a female, appeared on the 4th of August, 

 slightly crippled. 



The other larva, which had repaired its less damaged 

 cocoon, gave out a similar odour from its pot at the 

 time I first noticed it in the previous larva, though the 

 surface of the earth was undisturbed. On the 23rd 

 of July one end of the cocoon was found protruding a 

 little above the surface of the earth and the pupa-case 

 to just below the wing-covers, which were opened wide 

 apart, sticking out perpendicularly, and perfectly free 

 of contact with anything, the abdomen remaining 

 within the cocoon, while the moth, a perfect male, was 

 reposing on the cover of the pot. 



The cocoon was found quite perfect save only the 

 hole in it by which the pupa had -been partly thrust 

 forth ; it was lined with silk and smooth within, of 

 great toughness, and not easily torn open. (W. B., 

 Note Book II, 3.) 



