Published online by Cambridge University Press: 05 June 2009
1. Maritrema apodemicum sp. nov. from the long tailed field mouse, Apodemus sylvaticus sylvalicus (L.) on Skomer Island is described and compared with other species of the genus.
2. 14·6% of the mice were infested, the % infestation being greater in the males, 20·3%, than the females, 5·4%.
3. A brief discussion of the genus and of other species occurring in mammals is included.