Acmaea concreta S. S. Berry, 1963 accepted as Collisella stanfordiana (S. S. Berry, 1957) accepted as Lottia stanfordiana (S. S. Berry, 1957) (source of synonymy)
Acmaea fonsecana Pilsbry & H. N. Lowe, 1932 accepted as Notoacmea biradiata (Reeve, 1855) (source of synonymy)
Acmaea goodmani S. S. Berry, 1960 accepted as Collisella stanfordiana (S. S. Berry, 1957) accepted as Lottia stanfordiana (S. S. Berry, 1957) (source of synonymy)
Acmaea mutabilis Philippi, 1851 accepted as Collisella discors (R. A. Philippi, 1849) accepted as Lottia discors (R. A. Philippi, 1849) (source of synonymy)
Acmaea turveri fayae Hertlein & A. M. Strong, 1958 accepted as Acmaea turveri Hertlein & A. M. Strong, 1951 accepted as Lottia turveri (Hertlein & A. M. Strong, 1951) (source of synonymy)
Acmaea vernicosa P. P. Carpenter, 1865 accepted as Notoacmea biradiata (Reeve, 1855) (source of synonymy)
Antiplanes amphitrite Dall, 1919 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Antiplanes amphitrite var. beroe Dall, 1919 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Arene winslowae Pilsbry & H. N. Lowe, 1932 accepted as Arene olivacea (Dall, 1918) (source of synonymy)
Astraea (Pachypoma) inaequalis montereyensis Oldroyd, 1927 accepted as Pomaulax gibberosus (Dillwyn, 1817) (source of synonymy)
Astraea (Pachypoma) inaequalis var. depressum Dall, 1909 accepted as Pomaulax gibberosus (Dillwyn, 1817) (source of synonymy)
Astraea guadalupeana S. S. Berry, 1957 accepted as Pomaulax gibberosus (Dillwyn, 1817) (source of synonymy)
Astraea petrothauma S. S. Berry, 1940 accepted as Megastraea turbanica (Dall, 1910) (source of synonymy)
Astraea rupicollina Stohler, 1959 accepted as Megastraea turbanica (Dall, 1910) (source of synonymy)
Calliostoma angelenum H. N. Lowe, 1935 accepted as Calliostoma marshalli H. N. Lowe, 1935 (source of synonymy)
Calliostoma gemmuloides H. N. Lowe, 1935 accepted as Calliostoma marshalli H. N. Lowe, 1935 (source of synonymy)
Callopoma (Turbo) fluctuatum var. depressum P. P. Carpenter, 1856 accepted as Turbo funiculosus Kiener, 1848 (source of synonymy)
Carinodrillia halis soror Pilsbry & H. N. Lowe, 1932 accepted as Compsodrillia albonodosa (P. P. Carpenter, 1857) (source of synonymy)
Cithara fusconotata P. P. Carpenter, 1864 accepted as Tenaturris merita (Hinds, 1843) (source of synonymy)
Cithara sinuata P. P. Carpenter, 1856 accepted as Tenaturris concinna (C. B. Adams, 1852) (source of synonymy)
Clathrodrillia callianira Dall, 1919 accepted as Buchema granulosa (G. B. Sowerby I, 1834) (source of synonymy)
Clathrodrillia pilsbryi H. N. Lowe, 1935 accepted as Carinodrillia hexagona (G. B. Sowerby I, 1834) (source of synonymy)
Clathurella (Lioglyphostoma) crebriforma Shasky & G. B. Campbell, 1964 accepted as Philbertia doris Dall, 1919 (source of synonymy)
Clathurella affinis Dall, 1871 accepted as Lienardia rigida (Hinds, 1843) (source of synonymy)
Clathurella aurea P. P. Carpenter, 1857 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Clathurella erminiana Hertlein & A. M. Strong, 1951 accepted as Lioglyphostoma ericea (Hinds, 1843) (source of synonymy)
Clavus pembertoni H. N. Lowe, 1935 accepted as Imaclava unimaculata (G. B. Sowerby I, 1834) (source of synonymy)
Crassispira adamsiana Pilsbry & H. N. Lowe, 1932 accepted as Crassispira harfordiana (Reeve, 1843) (source of synonymy)
Crassispira dirce Dall, 1919 accepted as Zonulispira grandimaculata (C. B. Adams, 1852) (source of synonymy)
Crassispira erebus Pilsbry & H. N. Lowe, 1932 accepted as Crassispira unicolor (G. B. Sowerby I, 1834) (source of synonymy)
Crassispira flavonodosa Pilsbry & H. N. Lowe, 1932 accepted as Crassispira eurynome Dall, 1919 (source of synonymy)
Crassispira fonseca Pilsbry & H. N. Lowe, 1932 accepted as Pilsbryspira atramentosa (E. A. Smith, 1882) (source of synonymy)
Crassispira solitaria Pilsbry & H. N. Lowe, 1932 accepted as Maesiella punctatostriata (P. P. Carpenter, 1856) (source of synonymy)
Crassispira tangolanensis Hertlein & A. M. Strong, 1951 accepted as Crassispira unicolor (G. B. Sowerby I, 1834) (source of synonymy)
Crockerella hilli Hertlein & A. M. Strong, 1951 accepted as Pyrgocythara melita (Dall, 1919) (source of synonymy)
Crockerella pederseni Hertlein & A. M. Strong, 1951 accepted as Pyrgocythara danae (Dall, 1919) (source of synonymy)
Cryptogemma cymothoe Dall, 1919 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Cryptogemma eidola Dall, 1919 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Cymatosyrinx zeteki Dall & Ochsner, 1928 † (additional source)
Cytharella (Agathotoma) euryclea Dall, 1919 accepted as Agathotoma alcippe (Dall, 1918) (source of synonymy)
Cytharella (Agathotoma) phryne Dall, 1919 accepted as Agathotoma neglecta (C. B. Adams, 1852) (source of synonymy)
Cytharella burchi Hertlein & A. M. Strong, 1951 accepted as Tenaturris verdensis (Dall, 1919) (source of synonymy)
Cytharella hastula Pilsbry & H. N. Lowe, 1932 † accepted as Notocytharella striosa (C. B. Adams, 1852) (source of synonymy)
Cytharella hippolita Dall, 1919 accepted as Agathotoma stellata (Mörch, 1860) (source of synonymy)
Cytharella nereis Pilsbry & H. N. Lowe, 1932 accepted as Tenaturris merita (Hinds, 1843) (source of synonymy)
Cytharella niobe Dall, 1919 accepted as Notocytharella striosa (C. B. Adams, 1852) (source of synonymy)
Cytharella phryne Dall, 1919 accepted as Agathotoma neglecta (C. B. Adams, 1852) (source of synonymy)
Cytharella taeniornata Pilsbry & H. N. Lowe, 1932 accepted as Agathotoma stellata (Mörch, 1860) (source of synonymy)
Dallspira dalli Bartsch, 1950 accepted as Crassispira abdera (Dall, 1919) (source of synonymy)
Dallspira lowei Bartsch, 1950 accepted as Crassispira abdera (Dall, 1919) (source of synonymy)
Daphnella panamica Pilsbry & H. N. Lowe, 1932 accepted as Daphnella mazatlanica Pilsbry & H. N. Lowe, 1932 (source of synonymy)
Defrancia despecta H. Adams & A. Adams, 1853 accepted as Agathotoma neglecta (C. B. Adams, 1852) (additional source)
Defrancia intercalaris P. P. Carpenter, 1856 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Defrancia serrata P. P. Carpenter, 1856 accepted as Clathurella rava (Hinds, 1843) (source of synonymy)
Diodora constantiae Kanakoff, 1953 accepted as Diodora digueti (Mabille, 1895) (source of synonymy)
Drillia albovallosa P. P. Carpenter, 1857 accepted as Crassispira rudis (G. B. Sowerby I, 1834) (source of synonymy)
Drillia decenna Dall, 1908 accepted as Clavus clavata (G. B. Sowerby II, 1870) (source of synonymy)
Drillia hanleyi P. P. Carpenter, 1857 accepted as Crassispira coelata (Hinds, 1843) (source of synonymy)
Drillia inaequistriata C.-C. Li, 1930 accepted as Crassispira maura (G. B. Sowerby I, 1834) (source of synonymy)
Elaeocyma aeolia Dall, 1919 accepted as Globidrillia micans (Hinds, 1843) (source of synonymy)
Elaeocyma attalia Dall, 1919 accepted as Globidrillia paucistriata (E. A. Smith, 1888) (source of synonymy)
Elaeocyma baileyi S. S. Berry, 1969 accepted as Splendrillia lalage (Dall, 1919) (source of synonymy)
Fissurella chlorotrema Menke, 1847 accepted as Fissurella microtrema G. B. Sowerby I, 1835 (source of synonymy)
Fissurella humilis Menke, 1847 accepted as Fissurella microtrema G. B. Sowerby I, 1835 (source of synonymy)
Fissurella nigropunctata G. B. Sowerby I, 1835 accepted as Fissurella virescens G. B. Sowerby I, 1835 (source of synonymy)
Fissurella ostrea Reeve, 1850 accepted as Fissurella asperella G. B. Sowerby I, 1835 (source of synonymy)
Fissuridea asperior Dall, 1909 accepted as Diodora fontainiana (A. d'Orbigny, 1841) (source of synonymy)
Fossarus angiolus Dall, 1919 accepted as Parviturbo acuticostatus (P. P. Carpenter, 1864) (source of synonymy)
Gemmula esuriens Dall, 1908 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Gemmula esuriens var. pernodata Dall, 1908 accepted as Borsonella callicesta (Dall, 1902) (source of synonymy)
Glyphostoma adana Dall, 1919 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Glyphostoma adria Dall, 1919 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Glyphostoma myrakeenae Olsson, 1964 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Glyphostoma partefilosa Dall, 1919 accepted as Glyphostoma candidum (Hinds, 1843) (source of synonymy)
Glyphostoma sirena Dall, 1919 accepted as Lioglyphostoma ericea (Hinds, 1843) (source of synonymy)
Hemitoma scrippsae Durham, 1950 † accepted as Hemitoma natlandi Durham, 1950 accepted as Octomarginula natlandi (Durham, 1950) (source of synonymy)
Kurtzia gordoni Bartsch, 1944 accepted as Kurtzia arteaga (Dall & Bartsch, 1910) (source of synonymy)
Leucosyrinx amycus Dall, 1919 accepted as Aforia goodei (Dall, 1890) (source of synonymy)
Leucosyrinx herilda (Dall, 1908) (new combination reference)
Lioglyphostoma acapulcanum Pilsbry & H. N. Lowe, 1932 accepted as Miraclathurella bicanalifera (G. B. Sowerby I, 1834) (original description)
Lioglyphostoma armstrongi Hertlein & A. M. Strong, 1955 accepted as Glyphostoma neglecta (Hinds, 1843) (source of synonymy)
Liotia (Arene) pacis Dall, 1908 accepted as Macrarene californica californica (Dall, 1908) (source of synonymy)
Liotia heimi A. M. Strong & Hertlein, 1939 accepted as Parviturbo stearnsii (Dall, 1918) (source of synonymy)
Liotia olivacea var. litharia Dall, 1918 accepted as Arene olivacea (Dall, 1918) (source of synonymy)
Liotia rammata Dall, 1918 accepted as Arene fricki (Crosse, 1865) (source of synonymy)
Macrarene coronadensis Stohler, 1959 accepted as Macrarene cookeana (Dall, 1918) (source of synonymy)
Mangelia (Kurtziella) arteaga var. roperi Dall, 1919 accepted as Kurtzia arteaga (Dall & Bartsch, 1910) (source of synonymy)
Mangelia acuticostata var. subangulata P. P. Carpenter, 1857 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangelia angulata P. P. Carpenter, 1864 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangelia cerea P. P. Carpenter, 1865 accepted as Pyrgocythara hamata (P. P. Carpenter, 1865)  (source of synonymy)
Mangelia cetolaca Dall, 1908 accepted as Glyptaesopus oldroydi (Arnold, 1903) (source of synonymy)
Mangelia cymatia Pilsbry & H. N. Lowe, 1932 accepted as Kurtziella antiochroa (Pilsbry & H. N. Lowe, 1932) (source of synonymy)
Mangelia sulcata P. P. Carpenter, 1865 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangelia wrighti Jordan, 1936 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia (Kurtziella) alesidota Dall, 1919 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia (Kurtziella) hebe Dall, 1919 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia (Kurtziella) tersa Dall, 1919 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia barbarensis Oldroyd, 1924 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia hecetae Dall & Bartsch, 1910 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)
Mangilia oenoa Dall, 1919 accepted as Kurtziella plumbea (Hinds, 1843) (source of synonymy)