Fig. 24.
The egg is at first green, and gradually becomes darker. It is strongly ribbed from the base to the top, where the ribs become finer and turn over towards the central hollow, at the bottom of which is the micropyle. The fine cross-ribs form slight bosses at their junction with the upright ribs. The eggs are laid on the leaves of the thistle, but usually only one on a leaf.
Pl. 44.
Painted Lady.
Caterpillar, chrysalis and protection-web.