| Publication Type: | Journal Article |
| Year of Publication: | 1929 |
| Authors: | F. F. Laidlaw |
| Journal: | Proceedings of the Malacological Society of London |
| Volume: | 18 |
| Start Page: | 259 |
| Pagination: | 259-263 |
| Publication Type: | Journal Article |
| Year of Publication: | 1929 |
| Authors: | F. F. Laidlaw |
| Journal: | Proceedings of the Malacological Society of London |
| Volume: | 18 |
| Start Page: | 259 |
| Pagination: | 259-263 |