Included taxa
Chamberlin, R. V. & Ivie, W. (1945a). On some Nearctic mygalomorph spiders. Annals of the Entomological Society of America 38: 549-558. 
Species
| Species | Family | Page / figures | published as |
|---|---|---|---|
| Antrodiaetus montanus | Antrodiaetidae | 549, f. 1-2 (m) | Antrodiaetus montanus |
| Euagrus chisoseus | Euagridae | 555, f. 19-21 (Dmf) | Evagrus ritaensis |
| Eucteniza relata | Euctenizidae | 556, f. 8-10 (m) | Astrosoga rex |
| Hexura picea | Antrodiaetidae | 550, f. 3-5 (m) | Hexura picea |
| Microhexura idahoana | Microhexuridae | 552, f. 17-18 (Dmf) | Microhexura idahoana |
| Microhexura idahoana | Microhexuridae | 554, f. 16 (Df) | Microhexura rainieri |
| Sphodros rufipes | Atypidae | 550, f. 7 (m) | Atypus milberti |
| Ummidia pygmaea | Halonoproctidae | 558, f. 11-12 (Dm) | Pachylomerides pygmaeus |
| Ummidia tuobita | Halonoproctidae | 556, f. 13-15 (m, Df) | Pachylomerides tuobitus |
Genera
No genus found for this reference