350 HYLID^E. 



together a A or a >-N. Head large, depressed, a little broader than 

 long ; snout subacuininate, 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 

 e3 T elid ; tympanum very distinct, two thirds the 'width of the eye. 

 Outer fingers half or two-tbirds 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~ s haped 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. $ . Bahia. 



b-d. S $ • Santarem. H. A. Wickham, Esq. [C.]. 



e. $ . Interior of Brazil. 



/. S- Brazil. 



g-i- 6 2 • Canelos, Ecuador. Mr. Buckley [0.1. 



k. 2 ■ Sarayacu, Ecuador. Mr. Buckley [C.]. 



3. Hyla cryptomelas. 



Centrotelma cryptomelan, Cope, Journ. Ac. Philad. (2) vi. 1867, 

 p. 204. 



Tongue subcircular or suboval, entire, adherent. Vomerine teeth 

 between the large choanaa, in two series, forming together a /~\ or a 

 ■-v 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, aud the hands and feet (with the exception of 



