Abstract
The following list, compiled during my tenure of a grant given by the Nuffield Foundation to the Wildfowl Trust, Slimbridge, Gloucestershire, records species of Protozoa, helminths and Arthropoda found in anatid birds, either by the authors of the papers listed in the References, or by others to whose work these authors refer. It will be seen that there are, after the names of all the parasites, numbers which indicate, by reference to the corresponding numbers in the References, the authors and publications in which the species concerned are recorded. Thus Cotylurus brevis (142, 145*) means that this trematode was recorded from Aix galericulata, the Mandarin Duck, by Dubois (1953) and that Dubois & Rausch (1950a) reported an experimental infection of this duck with it.