4. HTLA. 377 



more acuminate; tte tongue is more elongate, and the vomerine 

 teeth are more anterior. 

 Paraguay; (S. Brazil). 



53. Hyla carolineusis. 



Hyla carolinensis, Gilnth. Cat. p. 105. 

 Cateshy, Nat. Hist. Carol, ii. pi. 71. 

 Hyla viridis, var. /3, Laur. Syn. Rept. p. 33. 

 Calamita carolinensis, Penn. Zool. Arci. ii. p. 831. 



cinereus, Schneid. Hist. Amph. p. 174. 



Rana biUneata, Shaw, Zool. iii. p. 136. 



Hyla lateralis, Daud. Rain. p. 16, pi. 2. f. 1; Leconte, Ann. Lye. New 



York, i. p. 278; Harl. Journ. Ac. Philad. v. p. 341; Dum. Sf Bibr. 



p. 587 ; Leconte, Proa. Ac. Philad. 1855, p. 428. 



viridis, Holb. N.-Amer. Herp. iv. pi. 29. 



semifasciata, Halloio. Proc. Ac. Philad. 1856, p. 307. 



Tongue subeiroular, entire or slightly nicked, and free behind. 

 Vomerine teeth in two small groups on a level with the hinder edge 

 of the choanfe. Head rather small, about as long as broad ; snout 

 rounded, aboiit once and a half as long as the diameter of the eye ; 

 canthus rostralis distinct ; loreal region not very oblique ; inter- 

 orbital space a little broader than the upper eyelid ; tympanum very 

 distinct, about two thirds the diameter of the eye. Fingers one- 

 third webbed ; no projecting rudiment of pollex ; toes three-fourths 

 webbed J disks smaller than the tympanum ; subartioular tubercles 

 moderate ; a distinct fold along the inner edge of the tarsus. The 

 hind Umb being carried forwards along the body, the tibio-tarsal 

 articulation reaches the eye or slightly beyond. Skin smooth or 

 minutely granulate above, granulate beneath. Greenish above, 

 immaculate ; a white streak on the upper lip, extending along the 

 sides of the body ; another along the inner side of the tibia. 

 Male with an external subgular vocal sac. From snout to vent 

 50 miUim. 



S.E. North America. 



u-b. 5 • "Si&w Orleans. 



c-e. (S & hgr, N. America. 



54. Hyla uranochroa. 



Hyla uranochroa, Cope, Journ, Ac, Philad. (n. s.) viii. p. 103, pi. 27, 

 f. 4. 



Tongue circular, slightly nicked, and scarcely free behind. Vo- 

 merine teeth in two small groups between the choanse. Head 

 moderate, as long as broad ; snout rounded, about once and a 

 half as long as the diameter of the eye; canthus rostralis dis- 

 tinct; loreal region slightly oblique; interorbital space broader 

 than the upper eyelid; tympanum distinct, somewhat more than 

 half the diameter of the eye. Fingers one-third webbed; no 

 projecting rudiment of poUex; toes three-fourths webbed; disks 

 smaller than the tympanum ; subarticular-tubercles moderate. The 



