306 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
Family NOTOPTERIDAE 
KEY TO THE GENERA AND SPECIES OF NOTOPTERIDS FROM LIBERIA 
la. Dorsal fin present; body blackish to brownish with pale roundish markings 
MOStCLION] yea ee ee ee Notopterus afer Giinther 
1b. No dorsal fin; uniform brownish or with fine darker lengthwise streaks. 
Xenomystus nigri Giinther 
Genus NOTOPTERUS Lacepéde 
Notopterus LAcepEprE, Hist. Nat. Poiss., vol. 2, p. 189, 1800. (Type: Gymnotus 
kapirat Bonn.) | 
NOTOPTERUS AFER Giinther 
Notopterus afer GiinrHER, Cat. Fishes Brit. Mus., vol. 7, p. 480, 1868.—HUBRECcHT, 
Notes Leyden Mus., vol. 3, p. 71, 1881 (St. Pauls River).—STEINDACHNER, 
Notes Leyden Mus., vol. 16, p. 88, 1894 (Fischermann See; St. Pauls River ; 
mouth Junk R.).—BouLeNcer, Cat. fresh-water fishes Africa, vol. 4, p. 
170, 1916 (Nanna Kru, Liberia).—Fowter, Proc. U. 8S. Nat. Mus. vol. 56, 
p. 232, 1919 (St. Pauls River, near Monrovia).—NicHoLts and LAMonrTE, 
Amer. Mus. Nov. No. 515, p. 1, 1932 (Nanna Kru, Liberia). 
The following are in the collection of the United States National 
Museum: 
U.S.N.M. No. 48499, 1 specimen, 145 mm. standard length, St. Pauls River 
at Mt. Coffee, February 20, 1897, Rolla P. Currie. 
U.S.N.M. No. 118768, 2 specimens, 225 and 232 mm., Bromley, W. M. Mann. 
U.S.N.M. No. 118769, 15 specimens, 51 to 338 mm., Bendaja, W. M. Mann. 
U.S.N.M. No. 118770, 43 specimens, 48 to 378 mm., Harbel, W. M. Mann. 
Genus XENOMYSTUS Giinther 
Xenomystus GiintHeEr, Cat. fishes Brit. Mus., vol. 7, 479, 1868. 
XENOMYSTUWS NIGRI Giinther 
Xenomystus nigri GiinrHerR, Cat. fishes Brit. Mus., vol. 7, p. 481, 1868.— 
BouLenceEr, Cat. fresh-water fishes Africa, vol. 1, p. 148, 1909 (Liberia) .— 
PELLEGRIN, Poiss. eaux douces Afr. Occid., p. 78, 1928 (Liberia). 
Notopterus (Xenomystus) nigri SrerinpAcHNeER, Notes Leyden Mus., vol. 16, 
p. 85, 1894 (Fischermann See). 
Family ANGUILLIDAE 
Genus SPHAGEBRANCHUS Bloch 
Sphagebranchus Biocu, Naturg. ausliind. Fische, vol. 9, p. 88, 1795. 
SPHAGEBRANCHUS CEPHALOPELTIS Bleeker 
Sphagebranchus cephalopeltis BLEEKER, Nat. Verh. Vet. Haarlem, vol. 18, p. 128, 
1863. 
Ophichthys (Sphagebranchus) biittikoferi SternpacHNER, Notes Leyden Mus., 
vol. 16, p. 88, 1894 ({[Du River] at Hill Town). 
