4. HYLA. 353 



7. Hyla indris. 

 -Hypaiboas indris, Cope, Proc. Amei: Philos. Soc. 1870, p. 555. 



Distinguished from H. crepitans in having shorter hind limbs. 

 Surinam. 



8. Hyla circumdata. 

 Hypsiboas circumdatua, Cope, Proc. Amer. Philos. Soc. 1870, p. 555. 



Vomerine series oblique, scarcely curved. Canthus rostralis little. 

 marked. Tympanum two thirds ocular opening. Palmation of hand 

 to middle antepenultimate phalange of longest finger ; thumb an 

 incurved, unusually elongate, osseous spur. Femoral bands ten, 

 blackish, very narrow, and nearly surrounding the leg ; seven broader 

 bands across the tibia. 



Differs from H. crepitans in its stouter form and much stouter 

 feet and hands and different coloration. 



Brazil. 



9. Hyla rDstrata. 

 Hyla roatrata, Peters, Mon. Berl. Ac. 1863, p. 466. 



Tongue very large, heart-shaped, broad, slightly nicked behind. 

 Vomerine teeth between the very large choanse, in two series forming 

 a r\. Head longer than broad ; snout flat, prominent, acute, more 

 than twice as long as the diameter of the eye ; canthus rostralis 

 distinct, concave ; loreal region flat ; eye very small ; tympanum 

 distinct, two thirds the diameter of the eye. Fingers with a slight 

 rudiment of web ; toes nearly entirely webbed; disks of fingers 

 well developed, broader than long, a little larger than those of the 

 toes ; subarticular tubercles well developed ; a prominent tarsal 

 fold. The hind limb being carried forwards along the body, the 

 tibio-tarsal articulation reaches beyond the tip of the snout. Upper 

 surfaces with scattered small tubercles ; a few longitudinal folds on 

 the back ; belly separated from the sides of the body and from the 

 chest by a prominent fold ; lower surfaces granulate. Light brown 

 above, with darker markings ; a triangular spot between the eyes ; 

 limbs cross-barred ; sides of the thighs with blackish vertical bars ; 

 a curved line above the tympanum, black ; yellowish beneath j throat 

 brown. From snout to vent 40 millim. 



Caracas. 



10. Hyla hypselops. 



Hypsiboas hjrpselops, Cope, Proc. Amer. Philos. Soc. 1870, p. 554. 



Vomerine teeth in two arched series, as in IT. crepitans. Tongue 

 broad. Head broad and flat ; snout rather eloagate, acuminate ; 

 canthus rostralis distinct, very concave ; eye very large ; tympanum 

 one third the diameter of the orbit. Fingers not webbed beyond 

 the basis of the proximal phalanges; a projecting rudiment of 

 poUex ; digital dilatations small. The hind limb being carried 



2 A 



