114 MEMOIRS OF THE CARNEGIE MUSEUM. 
lll. Teeth wanting; lower jaw with a distinct V-shaped median groove for the reception of the 
pointed decurved upper jaw; head rather chubby.............. 16. Adontosternarchus. 
I. EvecrropHorus Gill. 
Gymnotus LInNaUuS, Syst. Nat., ed. XII, i, 1766, 427. 
Electrophorus Gruu, Proe. ee Nat. Sci. ey. 1864, 151. 
Type, Gymnotus electricus Linneus. 
No frontal fontanel; anal basis extending around ne edge of the tail and 
forming a false caudal; electric organs well developed on each side of the lower 
part of the caudal three-fourths of the body; teeth conical, in one row in each jaw; 
body very elongate; no scales. 
The single species of this genus is the remarkable ‘‘electric eel’? of South 
America, variously known as the “ Porraki”’ by the Indians, the ‘‘numb-fish”’ by 
the English settlers, the ‘“Tembladore”’ or ‘‘Tembladore rayados”’ among Spanish 
peoples, and as the ‘‘ Anguille tremblante”’ in French Guiana. 
Fic. 1. Electrophorus electricus (Linnzeus). 
1. Electrophorus electricus (Linnzus). 
Ricuter, Mem. Acad. Paris, VII, 1729, 325; pe La ConpAmiNnE, Voy. dans 
Amer. Merid., 1748; idem, Voy. a l’Amazone, 154, 1745 (Para); InGRam, 
Neue Phys. Belustig., i, 1750, 288; ALLEMAND, Verhand. Maatsch. Haarlem, 
1755, 372; VAN DER Lort, Verhand. Maatsch. Haarlem, D. VI, St. II, 
1762 (Essequibo); Bancrorr, Essay on Nat. Hist. Brit. Guiana, London, 
1769, 191 (Essequibo); Pauuas, Spicil. Zool. Petrop., 1769; Bason, in Rozier, 
Observ. sur Phys. Hist. Nat., t. III, 47, 1774 (Cayenne); FrErmin, Ausfiihr. 
Hist. Phys. Kolonie Surinam, Berlin, Bd. ii, 59, 1775 (Surinam); Bason, 
Mem. Hist. Cayenne, 1777, ii, 288 (French Guiana); Lanaeutu, Disser. 
Torpedine, Wittenburg, 1778, 38; Harrstrnxs, Beschrb. v. Guiana, Berlin, 
1784, Vol. 1, 144; Bonatrerre, Encyclopedie Methodique, 1787, 22; Van 
BERKEL, Reise nach Rio Berbice, 1789, Th. 1, 220 (British Guiana); GuISAN, 
Obser. Hist. Cayenne, 1789; Rupouput, Abhandl. Berlin Akad., 1820-21, 
Physik. Klasse 229; Guprin-MENEVILLE, Iconographie Régne Animal, 1829, 
