THE PTEROPHORINA. 155 
feathers of microscopic size. The Péerophora have the first 
pair of wings divided into two and the second pair into three 
portions. These insects have also a long trunk and long hind 
legs, which are furnished with spines. They have a peculiar 
sort of flight, jerking about here and there, and some of them 
are called ghosts by country people. The white Pverophorus, 
which is called pentadactylus, because the wings are in five divi- 
sions, is perfectly white in colour, and flies about hedges and 
banks, with the dark-coloured leaves of which it forms a striking 
contrast in the eventide. The caterpillar, which is marked with 
green, white, and yellow rays, lives upon the bindweed, and 
hangs itself up when about to undergo metamorphosis into a 
chrysalis by a silken girdle, in the same manner as the cabbage 
caterpillars. 
The Orneodes have their wings, as may be seen in the 
engraving, very differently arranged to the species of Péero- 
phorus, for each one presents the appearance of six small but 
beautifully fringed feathers, and there being twelve on each side 
the insect really has twenty-four of them. When the moth alights, 
or is disposed to be quiet, it folds up these pretty feathery wings, 
just as if they were portions of a fan. The moths have no trunks, 
and they deposit their eggs here and there upon the flowers of 
the honeysuckle. 
The small caterpillar crawls inside the calyx and eats it from 
within, and when it has attained its full growth spins a small 
cocoon. 
The silkworm moth’s metamorphoses are so well known that 
they may be conveniently considered as the normal or usual 
phenomena with which to compare those of all other Chalinoptera. 
The transformation into the chrysalis state during the summer, 
and the rapid metamorphosis into the moth, appear necessary, 
in order that the eggs should be laid so as to be hatched on the 
first appearance of the leaves in the next spring. The delicate 
moth could not hybernate, and the chrysalis could not live in 
its cocoon all through the winter like those of many other 
genera. So the silkworm embryos in the egg have a long time 
