A459 = AMPHIGNATHODINTIDE. 
1. AMPHIGNATHODON. 
Pupil horizontal. Tongue subcircular, indistinctly nicked, and 
slightly free behind. Vomerine teeth. Fingers free; toes webbed, 
the tips dilated into large disks. Outer metatarsals united. Female 
with a dorsal pouch, as in Nototrema. No omosternum; sternum a 
cartilaginous plate. Diapophyses of sacral vertebra strongly dilated. 
Terminal phalanges claw-shaped. 
Ecuador. 
This genus differs from any other of the tailless tribe in having 
the lower jaw furnished with teeth, which are exactly the same as 
those of the upper jaw. In Hemiphractus and Ceratohyla the man- 
dibular tecth are quite different, and must rather be considered 
odontoids than true teeth, In Amphodus they are very strong and 
few in number. But in the present genus the teeth of the lower 
as well as of the upper jaw are small, elongated, closely set—in 
fact exactly the same as those of the upper jaw of the toothed 
Batrachians. 
1. Amphignathodon guentheri. (Prare XXX.) 
Vomerine teeth in two oblique series commencing from the inner 
posterior corner of the choane. Head much broader than long, 
bony, rough, the derm involved in the cranial ossification ; snout 
extremely short, vertically truncate; canthus rostralis angular ; 
crown deeply concave; interorbital space broader than the upper 
eyelid ; tympanum smaller than the eye, turned backwards. Fingers 
slender, first a little shorter than second, the tips dilated into large 
disks ; toes half webbed, the disks smaller than those of fingers ; 
subarticular tubercles moderate. The hind limb being carried for- 
wards along the body, the tibio-tarsal articulation reaches beyond 
the tip of the snout. Skin finely tubercular above, granulate on the 
belly and under the thighs; upper eyelid with a pointed dermal 
appendage ; heel with a dermal spur. Olive above, the borders of 
the dorsal pouch black ; a few whitish dots on the head and the sides 
of the body ; a black, white-edged streak along each side of the body ; 
upper surface of thighs whitish, with numerous black cross bars, 
which are broader than the interspaces between them; arms and 
legs with rather indistinct cross bars; beneath light greyish brown. — 
From snout to vent 75 millim. 
Ecuador. 
a9 Intac. Mr. Buckley [C. ]. 
The following genus should perhaps enter this family :— 
Grypiscus, Cope, Journ. Ac. Philad. (2) vi. 1867, p. 205. 
‘‘Mandible with a series of caducous pleurodont teeth, and a 
prominent elevated tooth on each side the symphysis. Prefrontal 
bones fully developed, in contact with each other throughout, and 
