Acteocina hawaiensis Pilsbry, 1921 accepted as Truncacteocina hawaiensis (Pilsbry, 1921) (original description)
Cardium thaanumi Pilsbry, 1921 accepted as Frigidocardium thaanumi (Pilsbry, 1921) (original description)
Congeria bryanae Pilsbry, 1921 accepted as Septifer cumingii Récluz, 1849 (original description)
Dinia compitorum Pilsbry, 1921 accepted as Diniatys dentifer (A. Adams, 1850) (original description)
Epitonium kanemoe Pilsbry, 1921 accepted as Epitonium sandwichense (Nyst, 1873) (original description)
Mitra emersoni Pilsbry, 1921 accepted as Neocancilla papilio emersoni (Pilsbry, 1921) (original description)
Mitra kamehameha Pilsbry, 1921 accepted as Nebularia ustulata (Reeve, 1844) (original description)
Mitra lugubris honoluluensis Pilsbry, 1921 accepted as Strigatella coronata (Lamarck, 1811) (original description)
Mitra waikikiensis Pilsbry, 1921 accepted as Neocancilla waikikiensis (Pilsbry, 1921) (original description)
Modiolus matris Pilsbry, 1921 (original description)
Murex pele Pilsbry, 1918 accepted as Homalocantha pele (Pilsbry, 1918) (additional source)
Murex torrefactus insularum Pilsbry, 1921 accepted as Chicoreus insularum (Pilsbry, 1921) (original description)
Mytilus crebristriatus f. maritima Pilsbry, 1921 accepted as Brachidontes maritimus (Pilsbry, 1921) (original description)
Nucula hawaiensis Pilsbry, 1921 (original description)
Odostomia (Chrysallida) hiloensis Pilsbry, 1921 accepted as Odostomia stearnsiella Pilsbry, 1918 (original description)
Rissoina striatula hawaiensis Pilsbry, 1921 accepted as Rissoina imbricata A. A. Gould, 1861 accepted as Sulcorissoina imbricata (A. A. Gould, 1861) (original description)
Scalenostoma remotissimus (Pilsbry, 1921) accepted as Scalenostoma subulatum (Broderip, 1832) (original description)
Sistrum vitiensis Pilsbry, 1921 accepted as Drupella fragum (Blainville, 1832) (original description)
Solecardia bryani Pilsbry, 1921 accepted as Radobornia bryani (Pilsbry, 1921) (original description)
Solecardia chascax Pilsbry, 1921 accepted as Leiochasmea chascax (Pilsbry, 1921) (original description)
Solecardia hawaiensis Pilsbry, 1921 accepted as Nesobornia hawaiensis (Pilsbry, 1921) (original description)
Solecardia hawaiensis obesior Pilsbry, 1921 accepted as Nesobornia hawaiensis (Pilsbry, 1921) (original description)
Solecardia stigmatica Pilsbry, 1921 accepted as Brachiomya stigmatica (Pilsbry, 1921) (original description)
Solecardia thaanumi Pilsbry, 1921 accepted as Achasmea thaanumi (Pilsbry, 1921) (original description)
Stilifer deformis hawaiensis (Pilsbry, 1921) accepted as Scalenostoma subulatum (Broderip, 1832) (original description)
Strombus ostergaardi Pilsbry, 1921 accepted as Canarium ostergaardi (Pilsbry, 1921) (original description)
Stylifer deformis hawaiensis Pilsbry, 1921 accepted as Stilifer deformis hawaiensis (Pilsbry, 1921) accepted as Scalenostoma subulatum (Broderip, 1832) (original description)
Stylifer deformis remotissimus Pilsbry, 1921 accepted as Stilifer deformis remotissimus (Pilsbry, 1921) (original description)
Stylifer thaanumi Pilsbry, 1921 accepted as Echineulima thaanumi (Pilsbry, 1921) (original description)
Terebra argus brachygyra Pilsbry, 1921 accepted as Terebra argus Hinds, 1844 (original description)
Terebra clappi Pilsbry, 1921 accepted as Strioterebrum plumbeum (Quoy & Gaimard, 1833) accepted as Punctoterebra plumbea (Quoy & Gaimard, 1833) (original description)
Terebra dussumieri hiradoensis Pilsbry, 1921 accepted as Duplicaria evoluta (Deshayes, 1859) (original description)
Terebra flavofasciata Pilsbry, 1921 accepted as Myurella flavofasciata (Pilsbry, 1921) (original description)
Terebra lanceata oahuensis Pilsbry, 1921 accepted as Hastula lanceata (Linnaeus, 1767) (original description)
Terebra langfordi Pilsbry, 1921 accepted as Terebra funiculata Hinds, 1844 (original description)
Terebra langfordi angustior Pilsbry, 1921 accepted as Terebra funiculata Hinds, 1844 (original description)
Terebra medipacifica Pilsbry, 1921 accepted as Hastula casta (Hinds, 1844) (original description)
Terebra medipacifica melior Pilsbry, 1921 accepted as Hastula casta (Hinds, 1844) (original description)
Terebra spaldingi Pilsbry, 1921 accepted as Oxymeris cerithina (Lamarck, 1822) (original description)
Terebra thaanumi Pilsbry, 1921 accepted as Oxymeris costellifera (Pease, 1869) accepted as Duplicaria costellifera (Pease, 1869) (original description)
Terebra waikikiensis Pilsbry, 1921 (original description)
Thecodonta symmetrica Pilsbry, 1921 (original description)
Vanikoro hawaiensis Pilsbry, 1921 (original description)
Vexillum (Costellaria) micra Pilsbry, 1921 accepted as Vexillum micra Pilsbry, 1921 (original description)
Vexillum thaanumi Pilsbry, 1921 (original description)
Vexillum turben kanaka Pilsbry, 1921 accepted as Vexillum turben (Reeve, 1844) (original description)
Vexillum xenium Pilsbry, 1921 (original description)

Hawaiian Islands for Mitra kamehameha Pilsbry, 1921 
Hawaiian Islands for Mitra waikikiensis Pilsbry, 1921 
Hawaiian Islands for Murex torrefactus insularum Pilsbry, 1921 
Japanese Exclusive Economic Zone for Terebra dussumieri hiradoensis Pilsbry, 1921 
Oahu Island for Strombus ostergaardi Pilsbry, 1921