The Subcontinent of India with it's long and varied coastline and associated offshore islands - Andamans, Nicobars and Lakshapweep - has a large and interesting molluscan fauna. Some 3271 marine species are recorded from India, of which this book deals with some 530 species, so even allowing that the book solely deals with Gastropoda and Chitons, it can be seen that this is by no means a comprehensivce coverage. On the whole this work is restricted to the larger species most likely to be encountered by the local students, for whom the book is, presumably, primarily intended.