Nedystoma Ogilby, 1898

(Figs 1–3, 38D, 46)

Type species: Hemipimelodus dayi Ramsay & Ogilby, 1886 .

Diagnosis

Mesethmoid median portion very narrow (2, 2> 1); premaxilla wide and moderately long, its length more than three times in width (120, 3> 1); premaxilla lateral and mesial portions of different sizes (121, 0> 1); anterior margin of premaxilla fringed (122, 0> 1); anteroventral portion of opercle subtrapezoidal, very long (127, 1> 0); dorsal crest of hyomandibula short and high (141, 0> 1); second external branchiostegal ray almost as wide as first ray (148, 0> 1); distal portion of third external branchiostegal ray spatulate (149, 0> 1); contact face between first epibranchial and first pharyngobranchial very conspicuous (177, 0> 1).

Ambiguous optimization: Upper (pharyngeal) tooth plate very long and narrow, its length more than four times its width (195,?> 3).

Included species

Nedystoma dayi Ramsay & Ogilby, 1886 .

Habitat and distribution: Predominantly freshwaters, but also in brackish waters, southern New Guinea (Fig. 38).

Remarks See Remarks of Doiichthys .