The families of British non-marine molluscs (slugs, snails and mussels)


L. Watson and M. J. Dallwitz

Contact information

L. Watson (taxonomy) —

M. J. Dallwitz (computing) —

Conditions of use

Applications of this package (including the duplication of text and images) are encouraged, without fee, provided copies are not made or distributed for direct commercial advantage and the source is acknowledged in publications of all kinds. We would appreciate being informed of such applications.

The JPEG illustrations provided here were designed for convenience of distribution and screen display, and are less sharp than the high resolution TIFF images from which they were generated. The latter have been retained, and could be made available for worthwhile applications.


We would appreciate constructive comments, and will try to correct errors as they are pointed out. In particular, we would be interested to hear from suitably knowledgeable persons interested in collaborating as joint authors in further development of the package. As well as improving the present family descriptions and incorporating better illustrations, this could involve extending the descriptive content to cover genera and species, extending the geographical coverage, or preparing parallel data sets for other regions.