Anatifera and Anatifa were used as generic names for what Linnaeus and Darwin called Lepas anatifera.) I should get rid of the difficulty of the second edition of Hill and of the difficulty of Anatifera vel Anatifa.

Linnaeus's generic description is equally applicable to Anatifera and Balanus, though the latter stands first.

Must the mere precedence rigorously outweigh the apparent opinion of many old naturalists?
As for using Lepas in place of Balanus, I cannot.

Every one will understand what is meant by Lepas Anatifera, so that convenience would be wonderfully thus suited.

If I do not hear, I shall understand I have your consent.
LETTER 31.