On a New Nematode, Raphidascaroides bishaii sp. nov., from a Freshwater Fish, Gymnarchus niloticus , in the Sudan

Several females of this new species were collected by the writer from the stomach of the Nile fish, Gymnarchus niloticus Cuvier from Khartoum in the Sudan, on June, 1958. Three males and several females were collected from the same host and locality, by Dr. Hilmy Bishai of the Zoology Department, University of Khartoum on March, 1960 and forwarded to the writer.