4. IIYLA. 377 



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

 teeth are more anterior. 

 Paraguay ; (S, Brazil). 



53. Hyla carolinensis. 



Ilvla carolinensis, Giinth. Cat. p. 10j. 

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

 Ilvla Yiridis, var. /3, Lain: Syn. Itept. p. 33. 

 Calamita carolinensis, Perm. Zoo!. Arct. ii. p. 331. 



cinereus, Schnetd, Hist. Amph. p. 174. 



liana bilinoata, Shaw, Zool. iii. p. 136. 



1 1 via lateralis, Daitrf. Rain. p. 16, pi. 2. f. 1; Leconte, Ann. Lye. New 



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



p. 587 ; Leeonte, Proe. Ac. Philad. 1855, p. 428. 



viridis, IL>lb. N.-Amer. Herp, iv. pi. 29. 



semifasciata, Hallow. Proe. Ac. Philad. 1856, p. 307. 



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

 Vomerine teetli in two small groups on a level with the hinder edgo 

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

 rounded, about 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 ; disks smaller than the tympanum ; subarticular tubercles 

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

 hind limb 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 miliim. 



S.E. North America. 



a-b. 2 • New Orleans. 



c-e. $ & hgr. X. America. 



54. Hyla uranochroa. 



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

 I. 4. 



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

 merine teeth in two small groups between the choana?. 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 pollex; toes three-fourths webbed; disks 

 smaller than the tympanum : subarticular tubercles moderate. The 



