order. Volume title pages, Vol. 1 - Vol. 15, and Vol.17. Achatina, Achatinella, Adeorbis, Akera, Amphidesma, Ampullaria, Anatinella, Ancylus, Ancillaria, Anodon, Arca, Astarte, Auricula, Broderipia, Buccinum, Bulimus, Bulla, Bullina, Cardilia.Volume C, Cardita, Cardium, Cassis, Castalia, Cemoria, Cerithidea, Chilina, Chiton, Chitonellus, Clausilia, Clavagella, Columbella, Concholepas, Conus, Crania, Cranopsis and Zeidora, Crassatella, Cultellus, Cumingia, Cyclophorus, Cyclostoma, Cyclostrema, Cyclotus, Cylindrella, Cymbium, Cypraea, Cyprina, Cyrena, Cytherea.Volume De - Hy, Delphinula, Dentalium, Dione, Dolabella, Dolabrifera, Dolium, Donax, Eburna, Erato, Etheria, Eulima, Fasciolaria, Ficula, Fusus, Galatea, Galeomma, Gastrochena, Gena, Glauconome, Gnathodon, Glycimeris, Haminea, Helicina, Hemipecten, Hippopus, Halia, Haliotis, Harpa, Helix, Hydatina, Hyria.Volume Io - Or, Io, Ianthina, Iridina, Kuphus, Laeda, Leiostraca, Leptopoma, Limnaea, Linteria, Littorina, Lithodomus, Lutraria, Magilus, Malleus, Mangelia, Margarita, Marginella, Megaspera, Megaspira, Melanopsis, Melatoma, Mesalina and Eglisia, Mitra, Modiola, Monoceros, Mulleria and Bartelettia, Murex, Mya, Mycetopus, Mytilus, Nassa, Nucula, Oliva, Ovulum, Natica, Nautilus, Navicella, Paludina, Pandora, Panpaea, Partula, Patella, Pecten, Pectunculus, Pedicularia, Perna, Pharus, Phasianella, Philine, Pholadomya, Pholas, Phorus, Physa, Placuna, Planaxis, Planorbis, Pleiodon, Pleurotoma, Plicatula, Potamides, Psammotella, Pterocera, Pterocyclos, Pteropoda, Puta, Pupindae, Pyrazus, Pyramidella, Pyrula, Rimula, Rissoa, Rotella.Volume Sa - Yo, Unio, Saxicava, Scaphander, Scarabus, Scutus, Sigaretus, Siphonaria, Solen, Solenella and Neilo, Sphaerium, Spondylus, Stomatella, Succinea, Tellina, Teredo, Tornatella, Trochita, Trochus, Tugalia, Typhis, Vanikoro and Neritopsis, Venerupis, Vertagus, Vitrina, Voluta, Yoldia.