This book describes 116 new species and subspecies of marine, freshwater, and land snails from more than ten countries (Cambodia, China, East Timor, Indonesia, Laos, Myanmar, Philippines, Taiwan, Tanzania, Thailand, Vietnam). These new species are completely different from those in previous books and illustrated in 83 colour plates and described in 119 pages. They include four bivalved shells, 12 marine shells, 10 freshwater shells and 94 land snails. Each new genus and new taxon is presented with its scientific name, locality, size, habitat, diagnosis, description, comparison, colour photos and museum registration no. Thirty-three typical and attractive Amphidromus spp. of South Asian countries with nice patterns and assorted colors are illustrated on the back cover.