All animals harboured helminths ( Table 2 ). The abundance of infection was greater in adults than sub-adults (Table 3) . Nematodes (Liniscus incrassatus; Roots, 1992) recovered from the lumen and between epithelial cells of the urinary bladder were associated with mild to moderate acute to chronic lymphocytedominated cystitis and/or mild degeneration and sloughing of epithelial cells. Infestation of the gall bladder by the digenean Dicrocoelium soricis resulted in only a mild lymphocytic submucosal infiltration in one of two animals infected. Neither helminths within the gastrointestinal tract nor Porrocaecum sp. larvae within interscapular adipose tissue were associated with inflammatory reactions or other histological changes.