NO. 1 199. CB VST A GEANS OF WEST AFRICA— BA THE UN. 2 83 



POTAMON (POTAMONAUTES) AFRICANUS (A. Milne-Edwards). 



Thelphusa africana A. Milne-Edwards. Nouv. Arct. Mrs. Hist. Nat., V, 1869, p. 



186, pi. XI, figs. 2, 2a ; Ann. Sci. Nat., Zool. (7) , IV, 1887, p. 124, fig. 8. 

 Potamon (Potamonautes) auiryi Ortmann (part), Zool. Jahrb., Syst., X, 1897, p, 



309. 



West African localities. — Rivers of Liberia (de Man); Mouiit Coffee, 

 Liberia (O. F.Cook; U.S.JST.M.) ; Kamerun (Aurivillius); Gabuu (A. 

 Milne-Edwards) ; the San Benito, the Ogove, the Alima, the Kongo (A. 

 Milne-Edwards). 



POTAMON (POTAMONAUTES) DECAZEI (A. Milne-Edwards). 



Thelphusa decazeiK. Milne-Edwards, Bull. Soc. Pliilom. (7), X, 1886, p. 150; Ann. 



Sci, Nat., Zool., (7), IV, 1887, p. 127, fig. 7. 

 Potamon {Potamonautes) decazei Ortmann, Zool. Jahrb., Syst., X, 1897, p. 309. 



West African localities. — The San Benito, Franceville on the Alima 

 (A. Milne-Edwards). 



POTAMON (POTAMONAUTES) AUBRYI (M ilne- Edwards) . 



Thelphusa auhryi Milne-Edwards, Ann. Sci. Nat. (3), XX, 1853, p. 210. — A. Milne- 

 Edwards (part), Ann. Sci. Nat., Zool. (7), IV, 1887, p. 122. 



Thelphusa aurantia Herklots, Addit. Fann. Afr. Occ, 1851, p. 5, pi. i, fig. 2. 

 (Not Cancer aurantius Herbst.) 



Thelphusa pelii Herklots, Symb. Care, Leyden, 1861, p. 13. 



Thelphusa emarginata Kingsley, Proc. Acad. Nat. Sci. Phila., 1880, p. 36. 



Potamon (Potamonautes) auhryi Ortmann (part), Zool. Jahrb., Syst., X, 1897, 

 p. 309. 



Potamon {Potamonautes) emarginatum Ortmann, Zool. Jahrb., Syst., X, 1897, 

 p. 309. 



African localities. — St. George-del- Mina, Guinea (Herklots); Kam- 

 erun (Aurivillius); Gabun (Milne-Edwards); West Africa (Kingsley) ; 

 Port Katal (Kingsley). 



POTAMON (POTAMONAUTES) MARGARITARIUS (A. Milne-Edwards). 



Thelphusa margaritaria A. Milne-Edwards, Nouv. Arch. Mus. Hist. Nat., V, 1869, 

 p. 185, pi. IX, figs. 4, 4a, 46 ; Ann. Sci. Nat., Zool. (7), IV, 1887, p. 130. 



Potamon {Potamonautes) margaritarium Ortmann, Zool. Jahrb., Syst., X, 1897, p. 

 308. 



Habitat. — St. Thomas, off west coast of Africa (A. Milne-Edwards). 

 The following localities on the island have been noted: Ribeira Peixe; 

 Poytinho, 400 meters altitude; Binda; Batepa; Saudade, 750 meters 

 altitude; River Agua Grande (Osorio); Rio de Mello, 300 meters 



(Greeff"). 



POTAMON (POTAMONAUTES) ANCHIETiE (Capello) . 



Thelphusa anchietw Capello, Jor. Sci. Lisboa, III, 1870, p. 132, pi. iia, fig. 11. — A. 



Milne-Edwards, Ann. Sci. Nat., Zool. (7), IV, 1887, p. 128. 

 Potamon {Potamonautes) perlatum Ortmann (part), Zool. Jahrb,, Syst., X, 1897, 



p. 307. 



West African localities. — Braganca; Ambaka; Pungo-Ndongo ; Dondo 

 (allin Angola). Luebo, Kongo; D. W. Snyder (U.S.N.M.). Quilengues 

 and Quando (Osorio). 



