| Ref. No. | Title |
|---|---|
| 7773 | Catalog of recent type specimens in the division of invertebrate zoology, American museum of Natural History. V. Mollusca, part 2 Class Gastropoda [inclusive of Opistrobranchia and Pulmonata] with supplements to Gastropoda (Opistobranchis and Bivalvia). |
| 58552 | Catalog of recent type specimens in the division of invertebrate zoology, American museum of Natural History. V. Mollusca, part 2 Class Gastropoda [inclusive of Opistrobranchia and Pulmonata] with supplements to Gastropoda (Opistobranchis and Bivalvia). |