a1 From the Department of Parasitology, London School of Hygiene and Tropical Medicine.
Neostrigea africana gen.et sp.nov., Neostrigea leiperi gen.et sp.nov. and Prostrigea arcuata gen.et sp.nov. are described from the intestine of Crocodilus niloticus, Kafue River, Northern Rhodesia. The three species are included in two new genera which are placed in a new family Neostrigeidae.
* Part of a Thesis approved by the University of London for the award of the Ph.D. degree.