| Helix plagioglossa Pfeiffer, 1859 |
| Helix pusilla Pfeiffer, 1839 |
| Helix remondi Tryon, 1863 |
| Helix rowelli Newcomb, 1865 |
| Helix salleana Pfeiffer, 1849 |
| Helix servilis Shuttleworth, 1852 |
| Helix simulans C. B. Adams, 1849 |
| Helix solidens Mabille, 1895 |
| Helix stearnsiana Gabb, 1868 |
| Helix steganella Mabille, 1895 |
| Helix strebeli Pfeiffer, 1862 |
| Helix subhyalina Pfeiffer, 1867 |
| Helix sumichrasti Crosse & Fischer, 1872 |
| Helix suturalis Pfeiffer, 1846 |
| Helix trigonostoma Pfeiffer, 1844 |
| Helix trigonostoma var. obscura Fischer & Crosse, 1872 |
| Helix trigonostoma var. salleana Pfeiffer, 1849 |
| Helix trochulina Morelet, 1851 |
| Helix tudiculata Binney, 1843 |
| Helix tudiculata var. binneyi Hemphill, 1890 |