4 LIFE-HISTORIES OF PTEROPHORIDA 
may easily be passed over as a glandular leaf seen edgewise, and vice 
versa. 
“Ordinarily the larva seems sluggish, but can move along fairly fast 
when it likes. It has, indeed, little incentive to move from the foodplant. 
When resting across the centre of the plant, with plenty of food within reach, 
it seems to remain there for days, until a large pile of flaccid dark yellowish- 
green frass accumulates. . 
““In some cases the frass is jerked away by a rapid movement of the anal 
extremity. In one instance which I noted it went about an inch up into the 
air and fell on to the Drosera plant about half an inch away from the larva ; 
but usually, I should imagine, it falls clear of the foodplant, or there would 
be no object in flicking it away in this manner. However, as noted above, 
the frass often does accumulate on the foodplant, so evidently this process 
of removal is not an invariable habit, but is a peculiarity confined to certain 
individuals. . 
“When crawling onto a Drosera plant the larva seems very careful to keep 
clear of the gummy detioles, and is assisted to do so by its long hairs, more 
especially those situated upon the head, for these hairs are seen to have en- 
larged basal attachments, which are evidently correlated with hypertrophied 
tactile nerves. 
“When crawling over the leaves the gum is often seen to adhere to the 
legs of the larva, which then stops, bends down its head, and cleans them 
by passing the gummy legs through its mouth. The whole process rather 
reminds one of a cat licking itself clean. 
“ Pupation. When searching for the larvee I must have examined severai 
scores of Drosera plants, which either contained full-fed larve or showed 
signs of having recently done so, but only in one case have I as yet found 
the pupa in a natural position, and, judging by the restless behaviour of 
larve in confinement just prior to pupation, I am constrained to believe 
that the larva wanders away from the plant and fixes itself up for 
pupation on some grass stem or similar object, where its discovery would be 
rendered exceedingly difficult by its resemblance to a pendulous grass 
seed. 
“This pupa, which was found im situ in its natural position (on 27th 
August) was on a medium-sized Drosera plant, which was growing under the 
shade of a tuft of grass. The plant had evidently been badly eaten by the 
larva, and there was no flower-stalk. The pupa was attached by its cremastral 
hooks to a silken pad spun on the base of a leaf just below the central bud 
and was lying, dorsal surface uppermost, across some leaves whose gummy 
