Note 66 — Part II. ON THE FINAL CAUSES OF TRANSFORMATION.

Only the species of Smerinthus can be made to lay eggs regularly in confinement; Macroglossa Stellatarum laid a number in a large gauze-covered breeding-cage; the species of Deilephila could not be induced to lay more than single ones in such a cage. From species of Chærocampa also I never obtained but a few eggs, and from Sphinx and Acherontia never more than single ones.