Streptaxis 20 Ennea 3 Helicarion 7 Microcystis 3 Sesara (?) 1 Medyla 1 Xesta 4 Macrochlamys 6 Kaliella 5 Hyalinia (?) 1 Hemiplecta 14 Rhysota 2 Trochomorpha 6 Trochomorphoides 3 Plectopylis 5 Stegodera 2 Plectotropis 12 Trachia 3 Fruticicola 2 Acusta 2 Chloritis 8 Dorcasia 1 Camaena 5 Hadra 5 Obbina 1 Amphidromus 33 Bocourtia 2 Buliminus 4 Hypselostoma 2 Tonkinia 1 Clausilia 15 Opeas 7 Spiraxis (?) 2 Subulina 1 Succinea 4 Vaginula 7 Limnaea 7 Planorbis 6 Canidia 13 Melania 39 Faunus 1 Bithynia 9 Wattebledia 1 Stenothyra 4 Hydrobia 1 Pachydrobia 9 Jullienia 6 Lacunopsis 6 Chlorostracia 4 Vivipara 39 Valvata 1 Ampullaria 15 Assiminea 7 Procyclotus 6 Dasytherium 2 Opisthoporus 5 Rhiostoma 7 Myxostoma 1 Pterocyclus 7 Cyclophorus 28 Leptopoma 10 Lagochilus 6 Pupina 8 Hybocystis 3 Alycaeus 6 Cataulus (?) 1 Diplommatina 2 Helicina 4 Georissa 2 Modiola (f. w.) 2 Dreissensia 3 Anodonta 17 Mycetopus 1 Pseudodon 18 Dipsas 4 Unio 64 Arconaia 1 Cyrena 6 Batissa 1 Corbicula 35 (_c_) _The Malay Province_ includes the peninsula of Malacca south of Tenasserim, and the series of islands beginning with Sumatra and stretching eastward up to the Ké Is., besides Borneo and Celebes. The Philippines form a separate province. The Malay province is singularly poor in representative forms, whether we regard it as a whole or consider the islands separately. Not a single genus, with the exception of _Rhodina_ (Malacca), appears to be peculiar. The contrast with the West Indies is in this respect very striking. Java, for instance, which is well explored, and almost exactly eleven times the size of Jamaica, has about 100 species of land Mollusca, while Jamaica has about 460.