Figure 4 in A new genus for the freshwater crab Potamonemus asylos Cumberlidgeı 1993ı (Brachyura: Potamoidea: Potamonautidae) from Cameroonı Central Africaı with a key to the genera of the Potamonautinae

Figure 4. Frontal view of carapace. (a) Buea asylos (Cumberlidge, 1993) comb. nov., holotype, adult ♂ CW 27.6 mm, between Buea and Kumba, Cameroon (NHM 1994.587). (b) Potamonemus mambilorum Cumberlidge and Clark, 1992, holotype, adult ♂, CW 34.5 mm, Somié, Cameroon (NHM 1991:183); (c) P. sachsi Cumberlidge, 1993, adult ♂, CW 31.6 mm, Obudu Plateau, Nigeria (NMU 8. IV.1983A). Photographs by Phillip Crabb, NHM, London. Scale bar: a = 9 mm; b = 11 mm; c = 10 mm.