BioStor
 | Notes on recent collections of North American land, fresh water, and marine shells received from the U. S. Department of Agriculture Robert E C Stearns (1894) Proceedings of The United States National Museum 16: 743-755 |
 | Notes on Physidae with descriptions of new species (1930) Occasional Papers of The Boston Society of Natural History 5: 301-315 |
 | 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 |