Scyllaea margaticacea – synonym of Glaucus atlanticus
Spiratella (Limacina) inflata – synonym of Limacina inflata
Spiratella (Limacina) trochiformis – synonym of Limacina trochiformis
Spiratella bulimoides – synonym of Limacina bulimoides
Spiratella helicina – synonym of Limacina helicina antarctica antarctica
Spiratella helicoides – synonym of Limacina helicoides
Spiratella inflata – synonym of Limacina inflata
Spiratella lesueuri – synonym of Limacina lesueuri
Spiratella retroversa forma australis – synonym of Limacina retroversa australis
Spiratella trochiformis – synonym of Limacina trochiformis
Spirialis appendiculatus – synonym of Limacina inflata
Spirialis australis – synonym of Limacina retroversa australis
Spirialis australis – synonym of Peraclis bispinosa
Spirialis bulimoides – synonym of Limacina bulimoides
Spirialis clathrata – synonym of Peraclis reticulata
Spirialis clathratus – synonym of Peraclis reticulata
Spirialis contorta – synonym of Limacina trochiformis
Spirialis diversa – synonym of Peraclis bispinosa
Spirialis inflata – synonym of Limacina inflata
Spirialis physoides – synonym of Peraclis reticulata
Spirialis recurvirostra – synonym of Peraclis reticulata
Spirialis recurvirostris – synonym of Peraclis reticulata
Spirialis reticulata – synonym of Peraclis reticulata
Spirialis rostralis – synonym of Limacina inflata
Spirialis trochiformis – synonym of Limacina trochiformis
Spirialis ventricosa – synonym of Limacina lesueuri
Spongeobranchaea polycotyla – synonym of Schizobrachium polycotylum
Spongeobranchia australis – synonym of Spongiobranchaea australis
Spongiobranchaea australis – synonym of Pneumoderma atlanticum atlanticum atlanticum
Spongiobranchaea oligocotyla – synonym of Schizobrachium polycotylum
Spongiobranchaea polycotyla – synonym of Schizobrachium polycotylum
Spongiobranchea australis – synonym of Spongiobranchaea australis
Spongiobranchea elongata – synonym of Paraclione longicaudata
Spongiobranchia australis – synonym of Pneumoderma atlanticum atlanticum atlanticum
Spongiobranchia australis – synonym of Pneumoderma mediterraneum
Spongiobranchia australis – synonym of Spongiobranchaea australis
Spongiobranchia elongata? – synonym of Paraclione longicaudata
Styliola acicula – synonym of Creseis acicula acicula
Styliola recta – synonym of Creseis acicula acicula
Styliola sinecosta – synonym of Cuvierina columnella atlantica
Styliola striata – synonym of Hyalocylis striata
Styliola subulata – synonym of Styliola subula
Styliola vitrea – synonym of Creseis virgula conica
Styliole recta? – synonym of Styliola subula