Below is a working checklist of Mount Desert Island's book scorpions. Please send corrections and updates to info@vfthomas.com. Photographs are welcome. Thank you.
| Family | Genus | Specific Epithet | authority | common name | Source (full citation given after this table) |
| Chthoniidae | Chthonius | tetrachelatus | ? | ? | Procter (1946, p. 510.) |
| Chernetidae | Chelanops | [sanborni?] | ? | ? | Procter (1946, p. 510.) |
| Chernetidae | Hesperochernes | tetrachelatus | ? | ? | Procter (1946, p. 510.) |
| Cheliferidae | Chelifer | cancroides | ? | ? | Procter (1946, p. 510.) |
| Neobisiidae | Microbisium | brunneum | ? | ? | Procter (1946, p. 510.) |