350 HYLIDZ. 
together a 7\ora-~. Head large, depressed, a little broader than 
long; snout subacuminate, about once and a half as long as the 
diameter of the eye; loreal region very oblique, slightly concave ; 
canthus rostralis distinct ; interorbital space broader than the upper 
eyelid; tympanum very distinct, two thirds the width of the eye. 
Outer fingers half or two-thirds webbed ; no distinct rudiment of 
pollex ; toes entirely webbed, or nearly so; disks of fingers and toes 
much smaller than the tympanum ; subarticular tubercles moderate. 
The hind limb being carried forwards along the body, the tibio- 
tarsal articulation reaches the tip of the snout, or nearly so far. 
Upper surfaces minutely granulate; belly and lower surfaces of 
thighs covered with large granules; heel with a short, triangular 
dermal appendage. Reddish brown above, uniform or marbled with 
blackish ; frequently an X-shaped marking on the anterior part of 
the back ; hind limbs with narrow cross bars; heel generally with a 
whitish spot; sides of body nearly always with vertical blackish 
lines ; lower surfaces whitish, immaculate, or with small brown spots 
on the belly. Male with an internal subgular vocal sac, and brown 
rugosities on the inner side of the first digit during the breeding- 
season. From snout to vent 68 millim. 
Brazil; E. Ecuador. 
a. Q. Bahia. 
b-d. 3 Q. Santarem. H. A. Wickham, Esq. [C.]. 
ad. Interior of Brazil. 
Vole Brazil. 
g-t. SQ. Canelos, Ecuador. Mr. Buckley [C.]. 
Wee Sarayacu, Ecuador. Mr. Buckley [C.]. , 
3. Hyla cryptomelas. 
Centrotelma cryptomelan, Cope, Journ. Ac. Philad. (2) vi. 1867, 
p. 204. 
Tongue subcircular or suboyal, entire, adherent. Vomerine teeth 
between the large choane, in two series, forming together a /"\ ora 
~. Head moderate, depressed, a little broader than long; snout 
rounded, as long as the diameter of the eye; loreal region very 
oblique, slightly concave; canthus rostralis distinct ; interorbital 
space broader than the upper eyelid; tympanum very distinct, two 
thirds the width of the eye. Three outer fingers half webbed; no 
distinct rudiment of pollex; toes three-fourths webbed; disks of - 
fingers and toes much smaller than the tympanum; subarticular 
tubercles moderately developed. The hind limb being carried for- 
wards along the body, the tibio-tarsal articulation reaches the tip of 
the snout, or nearly so far. Skin smooth, belly and lower surface 
of thighs granulate ; heel with a short triangular dermal appendage. 
Reddish brown above, punctated with black. In specimen a, the 
sides of the body, the arm and inner side of forearm, the thigh 
(except a narrow brown band along its upper surface and a white 
zone on the inner two thirds of its lower surface), the lower surface 
of tibia and tarsus, and the hands and feet (with the exception of 
