PSARIS cristatus.

Crested, or White-backed Saris.

Family Todidæ.—Nobis.

Bill lengthened, depressed, boat-shaped. Tarsi moderate, weak, the three anterior toes more or less united. Wings and tail short.

Sub-family Psariana.—Nobis.

Head very large, depressed. Mouth very wide. Bill thick, depressed, convex above. Feet weak, tarsi rather short, toes united at their base, the outer manifestly longer than the inner; claws broad, compressed; anterior scales transverse; lateral scales small, numerous. The male generally with a spurious quill between the first and second.

Genera.

Psaris. Cuv. Rictus smooth, wings lengthened, the first quill much longer than the fourth, tail short, even.

Type, Psaris Cayanus.—Cuv.