Gotha, Beckersche Buchhandlung: 1-324.

–Allen 765. Sirs. and cetaceans, 294-306; lists 3 genera and 4 species of the former. Allen says "The notices of the species are very short; the references relate only to figures. The technical names are marked for accent and their etymology is given. Evidently prepared for use as a concise hand-book of Mammalogy."