Abstract
During the spring of 1916, while making observations from an economic point of view on the Holly Tortrix Moth, Eudemis nœvana (Hb.), I found that, owing to the transparency of the egg and its flattened form, the development could be followed in the living egg in a general way with unusual clearness.Investigations have been carried out on the embryology of about eighteen species of Lepidoptera, but as far as I am aware no account has been published of the embryology of the Tortricidæ.

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