I Give herewith the conclusion to my experiments with Ajax and its varieties. The Telamonidas larva spoken of in my communication of 27th Feb. (vol. ii., p. 163) as having lived over the winter, on the 1st of April, 1871, produced male Telamonidas(all the rest had yielded Marcellus in 1870). The Marcellus larvæ were mostly lost at the burning of my house in February, but one was saved and yielded Telamonidas female on the 10th of April, 1871.