378 ni'LiB^. 



hind limb being carried forwards along the body, the tibio-t-arsal 

 ai'ticulation marks the front of the eye. Skin smooth above, grann- 

 late beneath. Pnrplish blue above, immaculate, the colour sharply 

 defined along the sides ; upper lip white-margined ; beneath whitish, 

 immaculate. From snout to vent 32 millim. 

 Costa Rica. 



a. $ . Oosta Eica. 



55, Hyla pulchrilineata. 

 Hyla pulchrilineata, Cope, Proc. Amer. Philos. Soc. xi. 1809, p. 163, 



Form that of H. arhorea. Tongue slightly free behind. Vome- 

 rine teeth in a single transverse series opposite the posterior margin 

 of the choana3 ; the latter much larger than the ostia pharyngea, 

 Cauthus rostralis distinct ; loreal region concave ; eye large, tym- 

 panum one fourth its size. Fingers free ; toes webbed to the base 

 of the penultimate phalange ; disks well developed. The hiud limb 

 being carried forwards along the body, the tibio-tarsal articulation 

 marks the front of the orbit. Skin smooth above ; granides of the 

 abdomen unusually weakly developed. Pale ashy brown above, 

 with five longitudinal citron-yellow bands, the outer broadest ; 

 femora finely yellow above and behind ,; a yellow longitudinal line 

 on both the inner and outer sides of the tibia. From snout to vent 

 38 millim. 



San Domingo, 



56, Hyla andersonii. 



Hyla andersonii, Baird, Proc. Ac. Philad. vii. 1854, p, 61 ; Cope, end. 

 loc. 1802, p. 154. 



In proportions and general appearance similar to //. arhorea. 

 Tongue broad, slightly cmarginate. Vomerine teeth in two oblique 

 series between the choan;e, each directed inward and backward. 

 Tympanum about one third the size of the eye. Skin of upper sur- 

 faces smooth, minutely corrugated ; lower surfaces granulate ; a 

 fold across the chest. Above dull olive-brown ; the concealed 

 surfaces of limbs, especially those in contact with each other, thickly 

 sprinkled with circular yellowish-white spots on a pale brown 

 ground, seen also on the armpits and sides of body behind ; a post- 

 ocular dark vitta extended down the sides, and sending a dark 

 branch across the arm to tlae chin ; no bars on the limbs. From 

 snout to vent about 2 inches. 



United States — New Jersey to South Carolina. 



57. Hyla eximia. 



Hyla euphorbiacea, G'dnth. Cat. p. 100, pi. x. f. C, 

 Hyla eximia, Baird, Proc. Ac Philad. 1851, p. 01, and U.S. Mex. 



Bound. Surv. p. 2!), pi. 38. f. 8-10; Peters, Mon. Berl Ac. 1809, 



p. 880 ; BroccJn, Bid/. Soc. Philom. (7) i. p. 128, 

 ~ — eupliorbiacea, SteimJachn, Novara, Amph. p. 59. 



