[Experimental study of the life cycle of Echinostoma togoensis n. sp., a larval parasite of Biomphalaria pfeifferi in Togo (author's transl)].

The adult and larval stages of Echinostoma togoensis are described. E. togoensis develops into rediae in the ovotestis of Biomphalaria pfeifferi which is totally sterilized. The metacercariae were recovered either in the pericardial cavity of several aquatic Pulmonata, or in the kidney of amphibian tadpoles. The adult was experimentally obtained in the laboratory mice exclusively.