Alaba catalinensis Bartsch, 1920 accepted as Pseudosabinella bakeri (Bartsch, 1917) (original description)
Caecum dalli Bartsch, 1920 accepted as Caecum quadratum P. P. Carpenter, 1857 (original description)
Caecum diegense Bartsch, 1920 accepted as Caecum quadratum P. P. Carpenter, 1857 (original description)
Caecum grippi Bartsch, 1920 accepted as Caecum quadratum P. P. Carpenter, 1857 (original description)
Caecum licalum Bartsch, 1920 accepted as Caecum quadratum P. P. Carpenter, 1857 (original description)
Cyclostremella concordia Bartsch, 1920 accepted as Skenea concordia (Bartsch, 1920) (original description)
Elephantanellum Bartsch, 1920 accepted as Caecum J. Fleming, 1813 (original description)
Elephantanellum carpenteri Bartsch, 1920 accepted as Caecum adamsi Raines, 2020 (original description)
Fartulum bakeri Bartsch, 1920 accepted as Caecum dextroversum P. P. Carpenter, 1857 (original description)
Fartulum hemphilli Bartsch, 1920 accepted as Caecum dextroversum P. P. Carpenter, 1857 (original description)
Fartulum occidentale Bartsch, 1920 accepted as Caecum dextroversum P. P. Carpenter, 1857 (original description)
Micranellum Bartsch, 1920 accepted as Caecum J. Fleming, 1813 (original description)
Micranellum barkleyense Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Micranellum catalinense Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Micranellum oregonense Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Micranellum pedroense Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Micranellum profundicolum Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Micranellum rosanum Bartsch, 1920 accepted as Caecum crebricinctum P. P. Carpenter, 1866 (original description)
Odostomia (Amaura) engbergi Bartsch, 1920 accepted as Odostomia engbergi Bartsch, 1920 (original description)
Odostomia (Amaura) sanjuanensis Bartsch, 1920 accepted as Odostomia sanjuanensis Bartsch, 1920 (original description)
Odostomia (Amaura) washingtonia Bartsch, 1920 accepted as Odostomia washingtonia Bartsch, 1920 (original description)
Turbonilla (Chemnitzia) engbergi Bartsch, 1920 accepted as Turbonilla engbergi Bartsch, 1920 (original description)

Alaskan part of the North Pacific Ocean for Micranellum oregonense Bartsch, 1920 
California for Micranellum catalinense Bartsch, 1920 
California for Micranellum rosanum Bartsch, 1920 
San Diego Bay for Caecum dalli Bartsch, 1920 
San Diego Bay for Caecum diegense Bartsch, 1920 
San Diego Bay for Caecum grippi Bartsch, 1920 
San Diego Bay for Caecum licalum Bartsch, 1920 
San Diego Bay for Elephantanellum carpenteri Bartsch, 1920 
San Diego Bay for Micranellum profundicolum Bartsch, 1920 
San Pedro for Fartulum hemphilli Bartsch, 1920 
San Pedro Bay for Fartulum bakeri Bartsch, 1920 
San Pedro Bay for Fartulum occidentale Bartsch, 1920 
San Pedro Bay for Micranellum pedroense Bartsch, 1920 
United States part of the North Pacific Ocean for Alaba catalinensis Bartsch, 1920 
Vancouver Island for Micranellum barkleyense Bartsch, 1920