| Type | PARATYPE |
| Catalogue # | OSUM 47187 |
| Type locality | "Muskn." [Muskingum River, Ohio, USA] |
| Collector(s) | ? |
| Date collected | 1800's |
| # Specimens | 1 dry |
| Description | American Journal of Science 14: 281 |
| Remarks | ex. S. Hildreth; ex. Marietta College |
| Current status | Plethobasus cooperianus (Lea, 1834) |
| Type | PARATYPE |
| Catalogue # | OSUM 47188 |
| Type locality | "O.R." [Ohio River, USA] |
| Collector(s) | ? |
| Date collected | 1800's |
| # Specimens | 1 dry |
| Description | American Journal of Science 14: 281 |
| Remarks | ex. S. Hildreth; ex. Marietta College |
| Current status | Plethobasus cooperianus (Lea, 1834) |