Say, T. (1821). An account of the Arachnides of the United States. Journal of the Academy of Natural Sciences of Philadelphia 2: 59–82.
| Taxon | |
|---|---|
| Parachelifer muricatus (Say, 1821) (Pseudoscorpiones: Cheliferidae) | 63–64, Chelifer muricatus |
| Americhernes oblongus (Say, 1821) (Pseudoscorpiones: Chernetidae) | 64, Chelifer oblongus |