'J:^ [September, 
shaped hole, through which the larva had escaped. The plant with the 
egg I had fastened with a pin to a larger plant in a flower-pot, so that 
it should not dry up. 
Suspecting that more eggs had probably been deposited in the 
same locality, I re-visited the place on the 5th September, and cut off 
about 100 plants (which were now rather more grown) close above the 
roots, without shaking them, and placed them in a pocket handkerchief. 
The following day, when they were becoming rather withered, I shook 
them out, whereby, in addition to sundry green aphides, and some larvae 
and pupse of Spyhus, I obtained eighteen onisciform larvae. These 
were from one to two lines long, dull pale greenish, with rather long 
white hairs, the lateral margins rather paler, the head black. They 
remained half-an-hour or longer before they crawled away from the spot 
where I had placed them ; they repaired to the under-side of the leaves, 
and ate during the sunshine the tips of the primate leaves, leaving only 
the upper skin remaining, which soon curled up and withered. 
On the 11th September I tried the same plan of operations on a 
sunny slope, where the imago had not been scarce in the spring. Here 
I found what I took for the full-grown larva, only I was struck by its 
shape being so slightly onisciform, since the body was narrow and 
gradually attenuated behind. The largest were pale green, with the 
head honey-yellow, spotted with black; a pale rose-coloured dorsal 
stripe on each segment, an elongate black spot on each side ; beneath 
the black spiracles ran a wavy pale red longitudinal stripe, the pro- 
thorax was yellowish. Yet I reputed this to be the Ifedon larva I was 
seeking, till I observed the following day that it had no anterior legs : I 
believe it was the larva of one of the Giirculionidce. As they were eating 
up my food unnecessarily, and I did not feel certain that they might not 
be disposed to make a meal of one of my true Medon larvae, I turned 
them away altogether. I had, however, amongst them truly obtained 
some larvae of Medon. By a third expedition I increased my stock to 
more than fifty, so that now there seemed good hopes of bringing 
some safely through the perils of winter ; I divided them into three 
flower-pots, but I had great difiiculty with the food-plants, since the 
young plants died quite as soon as the old ones planted with injured 
roots. At the same time, the larvae grew very slowly ; however, by 
degrees they assumed the colouring and markings of the adult larvae. 
Early in December, when frost set in, I distributed the three flower- 
pots for the winter, so that two (covered over with gauze) were placed 
outside a window facing north, and the other (quite uncovered) stood 
