These are the gastropods mentioned in the most books that we don't have articles for yet. (full list)
- Pila globosa — Pila (Ampullariidae, Not assigned)
- Aplysia kurodai — Aplysia (Aplysiidae, Anaspidea)
- Pleurobranchaea californica — Pleurobranchaea (Pleurobranchaeidae, Pleurobranchomorpha)
- Stylocheilus longicauda — Stylocheilus (monotypic) (Aplysiidae, Anaspidea)
- Alderia modesta — Alderia - modest alderia (Limapontiidae, Sacoglossa)
- Melanopsis praemorsa — Melanopsis (Melanopsidae, Not assigned)
- Onchidoris muricata — Onchidoris - raue sternschnecke (Onchidorididae, Nudibranchia)
- Bulla ampulla — Bulla (Bullidae, Cephalaspidea)
- Ferrissia rivularis — Ferrissia (Planorbidae, Hygrophila)
- Gyraulus convexiusculus — Gyraulus (Planorbidae, Hygrophila)
- Cleopatra bulimoides — Cleopatra (Thiaridae, Not assigned)
- Creseis virgula — Creseis (Creseidae, Thecosomata)
- Lamellaria perspicua — Lamellaria - kappeskæl (Velutinidae, Littorinimorpha)
- Pila ovata — Pila (Ampullariidae, Not assigned)
- Styliola subula — Styliola (monotypic) (Creseidae, Thecosomata)
- Skeneopsis planorbis — Skeneopsis - flat skenea (Skeneopsidae, Littorinimorpha)
- Helicella virgata — Helicella - bolle duinslak (Helicellidae, Stylommatophora)
- Omalogyra atomus — Omalogyra - hulspiret snegl (Omalogyridae, Not assigned)
- Cuvierina columnella — Cuvierina (Cuvierinidae, Thecosomata)
- Viviparus ater — Viviparus - italienische sumpfdeckelschnecke (Viviparidae, Not assigned)
- Architectonica nobilis — Architectonica (Architectonicidae, Not assigned)
- Berthellina citrina — Berthellina - lemon pleurobranch (Pleurobranchidae, Pleurobranchomorpha)
- Diacria trispinosa — Diacria - three-spine cavoline (Cavoliniidae, Thecosomata)
- Siphonaria alternata — Siphonaria (Siphonariidae, Not assigned)
- Promenetus exacuous — Promenetus (Planorbidae, Hygrophila)
- Nassarius mendicus — Nassarius (Nassariidae, Neogastropoda)
- Limapontia depressa — Limapontia - kleine schorreslak (Limapontiidae, Sacoglossa)
- Lymnaea ovata (provisionally_accepted_name).
- Fossaria modicella — Fossaria (Lymnaeidae, Hygrophila)
- Haminoea virescens — Haminoea (Haminoeidae, Cephalaspidea)
- Diacria quadridentata — Diacria (Cavoliniidae, Thecosomata)
- Bulla occidentalis — Bulla (Bullidae, Cephalaspidea)
- Bellamya unicolor — Bellamya (Viviparidae, Not assigned)
- Campeloma rufum — Campeloma (Viviparidae, Not assigned)
- Cylichna cylindracea — Cylichna - slanke oubliehoren (Cylichnidae, Cephalaspidea)
- Haminoea solitaria — Haminoea - haminée nordique (Haminoeidae, Cephalaspidea)
- Pleurobranchus membranaceus — Pleurobranchus (Pleurobranchidae, Pleurobranchomorpha)
- Vasum turbinellus — Vasum (Turbinellidae, Neogastropoda)
- Nerita scabricosta — Nerita (Neritidae, Cycloneritimorpha)
- Babylonia spirata — Babylonia (Babyloniidae, Neogastropoda)
- Cavolinia inflexa — Cavolinia (Cavoliniidae, Thecosomata)
- Nerita articulata — Nerita (Neritidae, Cycloneritimorpha)
- Siphonaria capensis — Siphonaria - cape false limpet (Siphonariidae, Not assigned)
- Assiminea californica — Assiminea (Assimineidae, Littorinimorpha)
- Ellobium aurisjudae — Ellobium (Ellobiidae, Not assigned)
- Limacina trochiformis — Limacina - trochiform pteropod (Limacinidae, Thecosomata)
- Acteocina canaliculata — Acteocina - channeled barrel-bubble (Cylichnidae, Cephalaspidea)
- Lanistes carinatus — Lanistes (Ampullariidae, Not assigned)
- Planorbula armigera — Planorbula (monotypic) (Planorbidae, Hygrophila)
- Thiara scabra — Thiara (Thiaridae, Not assigned)
- Bulinus senegalensis — Bulinus (Planorbidae, Hygrophila)
- Neptunea decemcostata — Neptunea (Buccinidae, Neogastropoda)
- Limacina bulimoides — Limacina - bulimoid pteropod (Limacinidae, Thecosomata)
- Berthella plumula — Berthella - yellow-plumed sea slug (Pleurobranchidae, Pleurobranchomorpha)
- Belgrandia marginata — Belgrandia (Hydrobiidae, Littorinimorpha)
- Cylichna alba — Cylichna - white chalice-bubble (Cylichnidae, Cephalaspidea)
- Gyraulus circumstriatus — Gyraulus (Planorbidae, Hygrophila)
- Haminoea vesicula — Haminoea (Haminoeidae, Cephalaspidea)
- Tylodina fungina — Tylodina (Tylodinidae, Umbraculida)
- Favorinus branchialis — Favorinus - favorinus-fadenschnecke (Facelinidae, Nudibranchia)
- Terebra subulata — Terebra (Terebridae, Neogastropoda)
- Trichotropis cancellata — Trichotropis (Capulidae, Littorinimorpha)
- Cavolinia uncinata — Cavolinia (Cavoliniidae, Thecosomata)
- Fossaria parva — Fossaria (Lymnaeidae, Hygrophila)
- Gyraulus deflectus — Gyraulus - flexed gyro (Planorbidae, Hygrophila)
- Amphissa columbiana — Amphissa (Columbellidae, Neogastropoda)
- Calma glaucoides — Calma (Calmidae, Nudibranchia)
- Corambe pacifica — Corambe (Onchidorididae, Nudibranchia)
- Diaphana minuta — Diaphana - arctic paperbubble (Diaphanidae, Cephalaspidea)
- Eubranchus pallidus — Eubranchus - bleke knuppelslak (Eubranchidae, Nudibranchia)
- Cavolinia gibbosa — Cavolinia (Cavoliniidae, Thecosomata)
- Crepidula nummaria — Crepidula (Calyptraeidae, Littorinimorpha)
- Hyalocylis striata — Hyalocylis (monotypic) (Creseidae, Thecosomata)
- Nassarius perpinguis — Nassarius (Nassariidae, Neogastropoda)
- Segmentina hemisphaerula — Segmentina (Planorbidae, Hygrophila)
- Melampus olivaceus — Melampus (Ellobiidae, Not assigned)
- Philine scabra — Philine (Philinidae, Cephalaspidea)
- Acella haldemani — Acella (monotypic) (Lymnaeidae, Hygrophila)
- Clio cuspidata — Clio (Cliidae, Thecosomata)
- Columbella fuscata — Columbella (Columbellidae, Neogastropoda)
- Hippeutis cantori — Hippeutis (Planorbidae, Hygrophila)
- Polinices uber — Polinices (Naticidae, Littorinimorpha)
- Epitonium angulatum — Epitonium - angulate wentletrap (Epitoniidae, Not assigned)
- Melanopsis costata — Melanopsis (Melanopsidae, Not assigned)
- Sinum scopulosum — Sinum (Naticidae, Littorinimorpha)
- Turritella cooperi — Turritella (Turritellidae, Not assigned)