Author: Müller and Henle,1837
Diagnostic Features:
Snout relatively short, nostrils virtually terminal on snout tip; eyes and supraorbital ridges well elevated; mouth slightly closer snout tip than eyes; lower labial folds not connected across chin by a dermal fold. Pectoral and pelvic fins thick and heavily muscular. Colour: either a black hood on head or large dark spot or spots on sides of body above pectoral fins.
Remarks:
The arrangement of this genus follows Fowler (1941) and Whitley (1940, 1967).