Its vomerine teeth are present in two oblique series that extend beyond the level of the hind edge of the choanae. Its head is depressed and triangular; the snout is subacuminate and prominent. The canthus rostralis is angular and the loreal region is nearly vertical and strongly concave. The interorbital space is as broad as the upper eyelid or rather broader in some cases. The tympanum is very distinct and is as large as the eye, but sometimes a little smaller.