Originally published 1914-1921 by Taylor and Francis, London.
1. Freshwater Gastropoda & Pelecypoda, by H. B. Preston.--2. Trochomorphidæ--Janellidæ by G. K. Gude.--3. Land operculates (Cyclophoridæ, Truncatellidæ, Assimineidæ, Helicinidæ), by G. K. Gude.