72 PACHETRA LEUCOPH2EA. 



six lines long, marked and coloured as before, and by 

 the 10th were laying up for the next moult, and by 

 the 14th these had moulted the fourth time. The dorsal 

 line then became buff-yellow and quite distinct; on 

 either side of it on each segment was a conspicuous 

 black dot, and another black dot on the side of each 

 segment. Black freckles now appeared just above the 

 spiracular stripe, also a black streak on each lobe in 

 the front of the head; the general colouring was 

 brown or brownish-drab, and the ground finely 

 freckled with dark brown atoms ; by the 26th some of 

 them were growing lighter coloured. I observed on 

 changing their pot of grass one was laid up for moult- 

 ing ; on the 28th it had moulted the fifth time, and was 

 then put back with the others ; on the 5th of August 

 another had. laid up to moult, and soon after got suc- 

 cessfully over the operation, and similarly three others 

 rather later ; another was waiting to moult on the 1 5th, 

 and the latest got over this fifth moult on the 24th. 

 After this fifth moult the larva was at first quite pale 

 ochreous, but in a few days gradually gained more 

 colour and growth, though this last proceeded slowly 

 enough, as at this time they were not quite an inch long. 

 On the 17th September one moulted the sixth time, 

 another a day or two later, and the whole number of 

 eight larvse, one after another, had got over their sixth 

 moult by the 30th. They were now prettier larvae, 

 much of the colour of Turkey rhubarb, two or three 

 in handsome coats of " feuille de mort " velvet ; they 

 were torpid and sleepy, yet they continued to feed a 

 little in the evenings. By the 14th October they had 

 attained the length of one inch and three lines, and 

 were rather thick in proportion, though their skin 

 seemed loose, and felt soft without firmness. On the 

 29th October I put them out in a pot of the growing 

 grass to take their chance, fearing, however, they 

 would all die, as one had already died on the 10th of 

 that month, from the effects of a white frost, which 

 led me to suppose they were too advanced to stand 



