- Magdalena Bay, Baja California, Sur
- paratypes in the San Diego Natural History Museum mollusk type collection
2. Cerithiopsis stephensae Bartsch, 1909 - Alaska
- paratypes in the San Diego Natural History Museum mollusk type collection
- originally the species name was stephensi, but since it was named for Kate, the species was emended to stephensae
3. Gafrarium stephensae Jordan, 1936
- Gulf of California to Ecuador
- now considered a synonym of Gouldia californica Dall, 1917
4. Odostomia stephensi Dall & Bartsch, 1907
- Alaska to Baja California
- now considered a synonym of O. tenuisculpta Carpenter, 1864
- originally the species was named for Kate even though it is stephensi
5. Rissoina stephensae Baker, Hanna & Strong, 1930
- from Cabo San Lucas, Baja California, Sur
- paratypes in San Diego Natural History Museum mollusk type collection