394 Mr. G. A. Bouleno;er on new 



LIV. — Descriptions of neio Batrachians and Reptiles from 

 the Andes of Peru and Bolivia. By G. A. Boulenger, 

 F.R.S. 



Hyla armata. 



Tongue circular, entire, slightly free behind. Vomerine 

 teeth in two very strong, short, transverse series behind the 

 level of the choanje. Head moderate, broader than long ; 

 snout rounded, barely as long as the diameter of the eye ; 

 canthus rostralis distinct ; loreal region oblique, concave ; 

 interorbital region as broad as the upper eyelid ; tympanum 

 moderately distinct, about one third the diameter of the eye. 

 Fingers webbed at the base ; no projecting rudiment of 

 pollex ; toes nearly entirely webbed ; disks of fingers rather 

 more than half the diameter of the eye, of toes a little smaller ; 

 subarticular tubercles moderate ; no tarsal fold. Tibio- 

 tarsal articulation reaching between the eye and the tip of the 

 snout. Upper parts with small smooth warts, belly and lower 

 surface of thighs granular. Greyish brown above, spotted or 

 marbled with darker; sides white, largely marbled with 

 dark brown ; hind limb with dark cross-bands separated by 

 narrow light interspaces ; lower parts greyish brown. Male 

 •with an internal vocal sac, and with large, black, horny, 

 pluricuspid nuptial plates, one under the arm, two close 

 together on the inner side of the inner finger. 

 From snout to vent 64 millim. 



Two specimens, male and female, from La Paz, Bolivia, 

 4000 m., collected by tlie late P. O. Simons. 



Ilyla callipleura. 



Tongue subcircular, entire or indistinctly nicked, slightly 

 free behind. Vomerine teeth between the very large choanse, 

 in two oblique series, forming a chevron pointing forwards. 

 Head moderate, as long as broad or slightly broader than 

 long ; snout rounded, as long as the diameter of the eye ; 

 canthus rostralis distinct ; loreal region oblique, slightly 

 concave ; interorbital region as broad as the upper eyelid ; 

 tympanum very distinct, three fifths or two thirds the 

 diameter of the eye. Three outer fingers one-third webbed ; 

 a distinct rudiment of pollex ; toes three-fourths webbed ; 

 disks smaller than the tympanum ; subarticular tubercles 

 feeble ; no tarsal fold. Tibio-tarsal articulation reaching the 

 tip of the snout. Skin smooth above, granular beneath. 



