BioStor
 | Catalogue of the Land-Shells inhabiting Polynesia, with remarks on their synonymy, distribution, and variation, and description of new genera and species (1871) Proceedings of The Zoological Society 1871: 449-477 |
 | May 2, 1871 Viscount Walden (1871) Proceedings of The Zoological Society of London 1871: 325-477 |
 | Types of shelled Indo-Pacific mollusks described by W. H. Pease R I Johnson (1994) Bulletin of The Museum of Comparative Zoology 154: 1-61 |