| Dalyellia circulobursalis Ruebush, 1937 | | w | latest taxonomic authority | |
| Microdalyellia graffii (Hallez, 1878) | | w | latest taxonomic authority | |
| Mesostoma chusholense Ruebush, 1939 | | w | primary taxonomic authority (describer) | |
| Mesostoma lingua baoensis Ruebush, 1939 | | w | primary taxonomic authority (describer) | |
| Mesostoma togarmense Ruebush, 1939 | | w | primary taxonomic authority (describer) | |
| Phaenocora alticola Ruebush, 1939 | | w | primary taxonomic authority (describer) | 50-53 |
| Mesostoma antarcticum Dreyer, 1918 | | w | other taxonomic work | |
| Phaenocora agassizi Graff, 1911 | | w | other taxonomic work | 53 |
| Phaenocora chappuisi de Beauchamp, 1936 | | w | other research on this sp. | 53 |
| Phaenocora highlandense Gilbert, 1935 | | w | other taxonomic work | 52-53 |
| Phaenocora lutheri Gilbert, 1937 | | w | other research on this sp. | 52 |