a canthal, a preorbital, a supraorbital, a postorbital, and a short orbitotympanic; the snout is short and blunt; the interorbital space is broader than the upper eyelid; the tympanum is very small, not half the diameter of eye, and generally indistinct (thus the common name). The first finger extends beyond the second; the toes are about half webbed, with single subarticular tubercles; two moderate metatarsal tubercles are present, with no tarsal fold. The tarsometatarsal articulation reaches the eye, or between the eye and the tip of the snout.
The canthal, preorbital, supraorbital, postorbital, and short orbitotympanic structures are present; the snout is short and rounded; the space between the eyes is wider than the upper eyelid; the tympanum is small, not half the diameter of the eye, and generally indistinct (thus the common name). The first finger extends beyond the second; the toes have a moderate degree of webbing with a single subarticular tubercle; two metatarsal tubercles are present without a tarsal fold. The tarsometatarsal joint reaches either the eye or between the eye and the snout tip.