This thorough review deals on a global basis with 7 genera of smallish ncogastropods - Turehua Marwick, 1943; Varicohilda Eames, 1957; Kapuatriton n.gen.: Plesiotriton Fischer, 1884; Africotriton n.gen.; Tritonoharpa Dall, 1908, and Loxotaphrus Harris, 1897. These range in age from the Late Cretaceous to the present day and, for the most part, were placed in the past in the Ranellidae.

To those acquainted with the study of molluscs both at amateur and professional level, the name of Alastair Graham will be familiar as signifying an expertise on the subject of the Prosobranchia wh

This book is intended as a photographic guide for divers and underwater photographers, and in illustrating all British species, including a few unnamed ones, it achieves its aim.

The publication in 1962 of the first edition of British Prosobranch Molluscs marked a milestone in molluscan literature. Covering all prosobranchs (marine, freshwater and terrestrial) it provided the most comprehensive synthesis on the subject, much of which was based on the authors' own research. Vera Fretter's beautiful drawings were then and still are a valuable asset in the study of molluscan anatomy. For 30 years it has remained a standard textbook for all students of Mollusca from zoology undergraduates to professional malacologists.

It is a great pleasure to see this revised edition of David Brown's Freshwater snails of Africa and their medical importance appear in print. The second edition follows the layout of the first but has been extensively re-written to provide a masterly up to date review. Above all, the book is immensely readable for although it is packed with pertinent facts Brown manages to present these in a lively and informative way which is easily understood and assimilated. The high quality of the text is matched by the production of the book.

In the words of its own Introduction, 'this volume is the first of two which gather together current information about Australian marine prosobranch molluscs and describe and illustrate their shells as an aid to identification for the purposes of business or pleasure'. Part two will deal with the neogastropods (Muricoidea, Cancellarioidea and ' Conoidea). The present part includes the remaining orders of prosobranchs, following the most recent classification ID that the three ptenoglossan superfamilies Triphoroidea, Janthinoidea and Eulimoidea come at the end of the hook.

Freshwater molluscs have suffered greatly at the hands of man. Either we destroy them by polluting or damming the streams in which they live or, because some of them act as intermediate hosts to medically or economically important parasites, we attempt to eradicate them systematically. Sadly we seem to succeed in polluting the harmless species more than we succeed in controlling the parasitic diseases. It is the latter aim that has led to David Brown's excellent and thorough book, as the title implies.

This atlas is the first to show molluscan distributions by tetrads (2x2 kilometre grid squares), an approach pioneered by the botanists. About 120 tetrads cover the Isle of Wight. Although the smallest English county, it is unusually varied in its geology and physiography and detailed mapping was therefore expected to reveal interesting relationships, obscured by the relatively coarse units (10 km squares) used in the national Atlas. This has indeed proved to be the case.

Hawaiian Marine Shells is part IV of a projected series of six volumes on the marine fauna of the Hawaiian Islands. It stands complete and self-contained for those uninterested in phyla other than mollusca.

The first volume of this series (Functional Anatomy and Physiology) appeared in 1975, and papers in volume 2A have notes that the mss were delivered in 1972, or submitted in 1972 and returned for hasty correction in 1977, or submitted in 1975, etc.; similarly volume 2B contains no reference later than 1976 - there seems to have been some delay in the publication. Nevertheless, these are two very useful volumes. The chapters of the first (2A) are: Systematics and comparative morphology of the Basommatophora (B. Hubendick); Classification of the land Mollusca (A.