REDESCRIPTION OF THE AFRICAN FRESH-WATER CRAB SUDANONAUTES-AFRICANUS (EDWARDS,A.MILNE, 1869) (BRACHYURA, POTAMOIDEA, POTAMONAUTIDAE)

The African fresh-water crab Sudanonautes africanus (A. Milne Edwards, 1869) is redescribed from a large series of specimens from 5 countrie s. The species is redefined by a combination of characters of the cara pace, chelipeds, and gonopod 1. The distribution of S. africanus is re vised to include the coastal rain-forest regions of Nigeria and Centra l Africa (from south Cameroon to lower Zaire), and to exclude the West African region west of the river Niger in Nigeria. Sudanonautes afric anus is one of the second intermediate hosts of the human lung fluke ( Paragonimus).