34 CHELTENHAM COLLEGE NATURAL HISTORY SOCIETY. 
mass into several parts. When the larva becomes full fed, the back 
becomes brown, and then the sides change colour, but not so com- 
pletely as the back. Then it descends the tree and wanders over the 
earth, with which its new colour harmonises fairly well, to seek a soft 
spot to burrow into, where it can pass the winter in safety. 
All but one caterpillar that I have taken have been near the foot 
of the tree when discovered, passing over the greenish part of the 
trunk near the ground, where they are more conspicuous than if on 
the ground or browner bark. Only one specimen that I have taken 
as a chrysalis was near a purple lilac. Two other chrysalides were 
near the foot of a white lilac, but all the caterpillars have been on 
white lilac, with one exception, and that was on the snowberry shrub, 
Poulton says that those that feed on privet are brighter than those 
feeding on lilac, but nothing could exceed the bright emerald colour 
of those found on the white lilac, in the parts where they had not 
begun to turn brown. 
The Caterpillars of the Six-spot Burnet (Zygzena filipendule), feed 
upon Bird’s-foot Trefoil (Lotus corniculatus), and closely resembles a 
common Carex (Carex glauca) which generally is to be found growing 
with the Trefoil. 
The colour of the Caterpillar is yellowish green, with rows of 
black spots which correspond to the seeds of the Carex. 
Some clothes-moth caterpillars were found feeding upon black 
cloth. They were tried on red, blue, black, and white cloth or wool. 
The colour of the devoured cloth, looking like a thin bit of wool, 
could be plainly seen through the transparent skin. These spin cases 
out of the fragments of wool which are very hard to detect, so neatly 
are they constructed. 
The Caterpillar of the Mullein moth (Cuculia Verbasci) is well 
concealed among the bright flowers of the yellow mullein upon which 
it feeds. 
The Caterpillar of the Small Tortoishell Butterfly (Vanessa urtices) 
possesses the power of changing the colour of its chrysalis into some- 
thing like harmony with its situation, as the following instances will 
shew. 
On the zgth June, I got nine caterpillars, and placed them ina 
dull blue box. 
On July 1st, one turned into a chrysalis, yellowish-green with pink 
on the points. 
On July 2nd, another turned dull green with pinkish purple 
points, 
EEE I Eve 
