201. rSeptember, 



When writing my previous paper, I was informed by Mr. Vine 

 (vid. I. c, p. 244) that the larvae found by him towards the end of 

 April were then hecojning full-fed, but he is now convinced that he 

 was mistaken on this point, and my experience in rearing the larvae of 

 the first brood has proved conclusively that they hibernate full-fed^ for 

 they all alike refused to touch fresh shoots of their food-plant sup- 

 plied to them in the spring. 



Being anxious to know when the larvae pupated, and to describe 



the pupa, I kept them under close observation during the spring. By 



April 13th two larvae had been replaced by cocoons of parasites, and 



on May 19th it was found that two ichneumon flies (not yet identified) 



had already emerged : these were followed by two more on May 22nd, 



on which date a careful examination of all the larvae revealed the 



disappointing fact that not a single one of them had yet begun to 



pupate. A few had shrivelled up and died, while several were still 



alive, though much shrunk in size and unhealthy-looking. On June 



9th last the few survivors were examined, when it was found that 



three larvse had pupated successfully, four or five had dwindled away 



and looked to be " at death's door," while one had been replaced by 



the cocoon of a parasite. 



PUPA. 



The following description was made on June 9th from pupae which 

 bad doubtless assumed this state a few days previously. 



Length, 4 5 mm. Greatest breadth, circ, 1"25 mm. 



Rather broad across the head, and conspicuouslj so across the thorax, whence it 

 gradually tapers off towards the anal extremitj. Segmental divisions well defined. 

 Skin highly polished. Ei/es showing through as large dark spots. Antennal cases 

 of almost equal length with wing-cases. Head and thorax, as well as antennal-, 

 wing-, and limb-cases, deep fuscous suffused with reddish-orange. Wing-cases 

 reaching to the end of the fifth abdominal segment. Abdominal segments, with a 

 very short, sparse, whitish pubescence, rufous-orange-fuscous, the incisions between 

 the movable segments being rufous-orange. Anal extremity rather pointed, armed 

 only with a good many pale yellowish hooked bristles. The free abdominal segments 

 in the three pupee examined, which all yielded male moths, were the 5th and 6th. 



The colour of the pupa gradually becomes darker, and is blackish before the 

 escape of the imago. 



The first moth emerged on June 16th, and the two others ap- 

 peared on the following day. Judging from these three, the time 

 of emergence is between 7.30 and 9 a.m. The second specimen has a 

 very distinct and clearly-defined white fascia, nearly straight, though 

 rather nearer the base on the costa than on the dorsum, across each 

 fore-wing, and represents an extreme form of the variety previously 



