142 Dr. T. A. Chapman's Ohseo-vations on 



This describes very well the habit ofthis and some other 

 Plumes I have observed, of resting during emergence, and 

 for a good deal of wing expansion to take place during the 

 process, so that it almost looks as if the wing was extended 

 by the process of drawing it out of the pupa-case. 



June 26-28. Eight larvjB hatched from eggs received 

 from Mr. South, and were placed each on a plant of 

 Droscra, on petioles low down, in the belief they wanted 

 to go to the central bud. 



June 29th. Four of these larvaB are now easily seen in 

 the centre of a leaf leisurely eating the very short stemmed 

 hairs and glands that occupy that position ; one has already 

 cleared a little circle of more than his whole length in 

 diameter. The intestinal contents look dark. One 

 concludes that those eggs are most naturally placed that 

 are on the stem of the glands at the margin of a leaf. 



One observes also that the Drosera is infested by an 

 Apliis. This is of interest as bearing on the supposed 

 immunity of the plant from insect attack due to its 

 insectivorous habit. Such immunity would appear to be 

 a fiction. 



July 2nd. These larvoe clear the centre of the leaf of 

 the short stems and glands that occur in that position, 

 leaving the longer marginal ones alone ; the little larva 

 itself, even when grown a little, is very inconspicuous and 

 difficult to find. With a lens, the cleared central portion 

 of the leaf, with red frass scattered over it, is easily seen ; 

 but without a lens, the red frass gives very nearly the 

 same tone to the leaf as the glands do, so that except by 

 very close scrutiny nothing unusual presents itself. 



July 2nd. This morning one larva is found to have 

 changed its skin, and appears to be eating the cast skin. 

 The moult occurred near the centre of the leaf, where the 

 feeding was done ; the only protection by way of web, 

 tent, or any other shelter, is a few threads sjDun across the 

 tops of the adjacent glands, making a flimsy and almost 

 invisible cover. The larva has a relatively rather large 

 head, and the hairs are about as long as the larva is thick 

 and look dense and crowded together. The larva is still 

 pale and transparent looking, but the eye-patch is densely 

 black, the dorsal tubercles (not the hairs) are dark, and the 

 dorsum has a pale ruddy tint ; the longer hairs are slightly 

 clubbed at their tips. 



In the first skin the larva grows a good deal but remains 



