348 
Filariid Parasites of Ruminants 
Setaria Hornbyi sp. n. 
Male and female specimens of a large species of Setaria were obtained by 
Mr H. E. Hornby from the Sable Antelope, Hippotragus niger, in Northern 
Rhodesia. The worms were found on the surface of the liver, in the mediastinal 
spic.1. 
fold and in the peritoneal cavity. Mr Hornby writes that he has seen similar 
forms parasitic in the Eland, Water-Buck and Reed-Buck. 
Specific diagnosis. Setaria: Anterior end of the body narrowing very 
gradually to a point about the level of the nerve-ring, in front of which it 
