[Life cycle of Paramphistomum togolense n. sp. (Trematoda, Paramphistomidae)]. / Cycle biologique de Paramphistomum togolense n. sp. (Trematoda, Paramphistomidae).

Mature worms were obtained from a sheep experimentally infested with metacercariae issued from cercariae emitted by naturally infested snails: Bulinus (Bulinus) forskalli collected near Lomé (Togo). Miracidia were used for infection of these laboratory-reared snails which gave numerous cercariae. Larval stages are studied. Morphological and histological characters of the adult and the very peculiar shape of the sporocyst distinguish this trematode from the other known species of the genus. The superficial argentophilic structures of the miracidium and cercaria are described in detail because, to our point, they constitute the best criteria for the taxonomy of this group.

[Onchocerca raillieti n.sp. (Filarioidea) from a domestic donkey in Africa]. / Onchocerca raillieti n.sp. (Filarioidea) chez l'Ane domestique en Afrique

Onchocerca raillieti sp. n. (Filarioidea), from the domestic donkey (Equus asinus) in Africa, is described. The species is compared to O. bohmi (Supperer, 1953) n.comb, O. reticulata Diesing, 1841, O. cervicalis Railliet et Henry, 1910, O. flexuosa (Wedl, 1856) and O. armillata Railliet et Henry, 1909 and can be differentiated by numerous characters of which the most important are the anterior region of the female (which is straight and slender, 6 to 8 cm long, and bears longitudinal striae) and the 10 symmetrically arranged pairs of caudal papillae. O. raillieti seems to be a primitive species by several characters (caudal papillae, cervical papillae, oesophagus, vulva and cuticle.)