In the years 1856 and 1857 Capt. Thos. Hutton communicated to the London Entomological Society (Trans. v., 85) and to the Journal of the Agri-horticultural Society of India (ix., 167-9) certain observations on the means employed by the imago of Actias selene in obtaining exit from its cocoon. In 1857 Messrs Horsfield and Moore in their catalogue of the Lepidoptera in the Indian Museum, quote and endorse Capt. Hutton's observations, and in the course of their remarks indicate indirectly that the same methods are employed by Antherea paphia, an Indian Attacian allied to our T. polyphemus.