1732 The Zoologist— July, 1869. 



it appeared to have already undergone two changes of s1<in, and had 

 thus probably come out of the egg at the end of July or the beginning 

 of August. 1 have, however, found nearly full grown larva? in the first 

 week of September, so that it seems the eggs are laid sometimes in 

 the spring and at others in the beginning of the summer. 



Fig. 1, plate 1, represents the young larva above-mentioned, of the 

 natural size ; fig. 2 is the same larva magnified. I have no record of 

 its exact length : it had twenty-lvvo legs, the abdominal legs being 

 wanting on the eleventh segment. The head and the thoracic legs 

 were a pale bluish green, the other parts of the body being yellowish 

 green ; along the middle of the back there was a row of eleven or 

 twelve round black spots, and next that a narrow yellow stripe : be- 

 tween this latter and the row of black spiracles there was a small 

 round black spot on each segment. 1 found two more such young 

 larvos during that year ; the}^ were no more lively or active than those 

 more advanced; they were generally curled up like lap-dogs : I was 

 surprised to find that they fed about the middle of the day, as other 

 larvjE which do not feed the whole day usually do so either in the 

 morning or the evening. 



According to Zaddach and Brischke (p. 241 of the work mentioned) 

 the larva is pale green jjrevious to the first moult and without yellow 

 lines, but having the three rows of black dots as described above. 



After my young larv;c (which I had in the house) had moulted for 

 the first time, which will have been the third time during their ex- 

 istence, they had assumed the colouring which most writers on the 

 subject describe : for example (see fig. 3), the head was pale greenish 

 yellow, the body at the sides was yellow inclining to green, and 

 becoming gradually greener, with two narrow yellow stripes on the 

 back ; between them was a somewhat broader line transversely 

 striped with pale and dark blue, and extending to the penultimate 

 segment of the body. Between the row of spiracles, which are blackish, 

 and the yellow lines are twelve round bluish gray spots. The ventral 

 surface, together with the abdominal legs, were pale yellowish green. 

 The eyes were inserted in round black spots. 



A full grown larva, represented at fig. 4, which I found nearly in 

 that stale on the 7th of September, 1857, crawling on the ground, was 

 slightly different in colouring: it was more of a gray than a yellowish 

 green, and the head had a blue tint. In both these examples each 

 segment of the body, with the exception of the last, was divided into 

 folds by five or six wrinkles. As far as the gray-blue spots on the 



