60 ARGYNNIS PAPHIA. 



time the length of the larva is about three- sixteenths 

 of an inch. 



At the next moult, after an interval of about ten 

 days, the details and colours are much as before, and 

 the general appearance is very dark and black. 

 Another moult and the larva soon becomes three- 

 eighths of an inch long, and shows the two lines on 

 the back to be ochreous-yellow, and the sides brownish- 

 ochreous. 



From this point I shall speak especially of one 

 individual, the most forward, which I kept apart from 

 the rest and to which I paid especial attention ; this 

 one moulted again on the 29th of April, when it seemed 

 much exhausted ; it waited four hours before moving 

 and then hid itself under another leaf, remaining there 

 without further movement for twenty-nine hours more, 

 and only beginning to feed again on the 1st of May. 

 It now ate out small segments of circles from the 

 edges of the violet leaves, and after eleven days' steady 

 feeding and growth, I found its length had increased 

 to five-eighths of an inch ; the spines at this stage 

 differed in colour, those of the upper row being pinkish- 

 ochreous with black tips, the first pair blunt, those of 

 the lower rows black with reddish bases. 



The penultimate moult occurred on the 13th of May 

 and gave the extra length to the first pair of spines 

 behind the head, with their blunt tips black ; all the 

 other spines amber-yellow. On the same day, only 

 three hours later, another individual was well over the 

 corresponding moult, and to this one also I devoted 

 especial notice ; of the remaining two larvse still kept 

 together, it will be enough to say here that they showed 

 the extra length of the front spines on the 15th and 

 16th of May. The growth of all continued, and in seven 

 days the first, specially noted above, was a little over 

 an inch in length, and the second about an inch ; 

 neither appeared up to this time to feed very often, 

 but each made a good meal twice a day. 



I observed the first larva, in preparation for its last 



