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In this genus the head is lengthened, and slightly depressed, resembling in form that of certain Serpents: the muzzle is obtuse; the teeth, both of the jaws and palate, loose in structure, sharp, and pointing backwards. The tongue is entire, of a velvety surface; the eyes distinct through the skin. There are no pits, neither under the muzzle, nor below the eyes. The body is somewhat thickened in the middle, and is covered with numerous circular wrinkles.

The only known species of this genus is the Two-lined Cæcilia, (Rhinatrema bivittatum, .)