Pontonia Latreille, 1829: 96; Holthuis, 1951 a: 115; Fransen, 2002: 69.
Diagnosis: Carapace, rostrum with one small subdistal dorsal tooth, with developed lateral carina, without dorsal carina; antennal spine distinctly separated from carapace margin, acute. Stylocerite small; Scaphocerite with distal tooth less than 0.1 of his length. Mandible without palp, with molar and incisor processes. Pereopods 3–5 dactyls with inner margin without tubercles, and a patch of distal scales. Telson with distal pair of dorsolateral cuspidate setae in his distal third (modified from Fransen, 2002).