FRESH-WATER FISHES OF LIBERIA—SCHULTZ 309 
has the following data: Dorsal rays 26; anal 44; pectoral 10; scales 80; 
teeth “. 
Genus PETROCEPHALUS Marcusen 
Petrocephalus MARcUSEN, Bull. Acad. Sci. St. Petersburg, vol. 12, p. 10, 1854. 
(Type: Mormyrus bane Valenciennes. ) 
PETROCEPHALUS SIMUS (Sauvage) 
Mormyrus (Petrocephalus) simus SAUVAGE, Bull. Soc. Philom., yol. 3, p. 100, 
1878. 
Petrocephalus simus BOULENGER, Cat. Fresh-water fishes Africa, vol. 1, p. 54, 1909 
(Duqueah River, Liberia).—PELLEGRIN, Poiss. eaux douces Afr. Occid., p. 51, 
1923 (Liberia). 
Mormyrus tenuicauda STEINDACHNER, Notes Leyden Mus., vol. 16, p. 69, 1894 
(Duqueah and Junk Rivers). 
The following specimens, collected by Dr. Mann, are in the National 
Museum collections: 
U.S.N.M. No. 118801, 20 specimens, 70 to 118 mm., Bromley. 
U.S.N.M. No. 118802, 2 specimens, 63 and 66 mm., Bendaja. 
U.S.N.M. No. 118803, 4 specimens, 57 te 86 mm., Bellyella. 
U.S.N.M. No. 118804, 18 specimens, 58 to 92 mm., Harbel. 
Genus ISICHTHYS Gill 
Tsichthys Gitt, Proce. Acad. Nat. Sci. Philadelphia, 1862, p. 443. (Type: [sichthys 
henryi Gill.) 
ISICHTHYS HENRY!I Gill 
Isichthys henryi Git, Proce. Acad. Nat. Sci. Philadelphia, 1862, p. 44 (Liberia).— 
BouLenGER, Cat. fresh-water fishes Africa, vol. 1, p. 60, 1909 (Liberia) — 
NIcHOoLs and LAMontr, Amer. Mus. Nov. No. 626, p. 2, 1933 (Kaleata, Liberia). 
Mormyrops henryi HuprecHt, Notes Leyden Mus., vol. 3, p. 70, 1881 (St. Pauls 
River). 
Mormyrus henri STEINDACHNER, Notes Leyden Mus., vol. 16, p. 66, 1894 (St. Pauls 
River and Duqueah River). 
The United States National Museum collections contain the follow- 
ing specimens, all collected by Dr. Mann: 
U.S.N.M. No. 118797, 19 specimens, 81 to 256 mm., Bromley. 
U.S.N.M. No. 118799, 14 specimens, 85 te 265 mm., Bendaja. 
U.S.N.M. No. 118800, 86 specimens, 70 to 257 mm., Gibi Mountain. 
U.S.N.M. No. 118798, 38 specimens, 68 to 276 mm., Harbel. 
Genus MARCUSENIUS Gill 
Marcusenius Git, Proc. Acad. Nat. Sci. Philadelphia, 1862, p. 139. (Type: 
Marcusenius brachyistius Gill [not M. cyprinoides L. as designated in Jordan’s 
Genera of fishes and not M. anguilloides L. as given by Gill, ibid., p. 444].) 
469014—42 2 
