oh 
4, HYLA. 373 
Rept. p. 71, pl. 21. £.53.a; Leconte, Proc. Ac, Philad. 1855, p. 428 ; 
Wied, Nov. Act. xxxii. p. 116. 
Dendrohyas versicolor, Tschudi, Batr. p. 75, 
Tongue circular, slightly nicked, and free behind. Vomerine teeth 
in two straight or slightly oblique groups on-a level with the hinder 
edge of the choanze. Head broader than long; snout rounded, as 
long as, or slightly longer than, the diameter of the orbit ; canthus 
rostralis distinct ; loreal region slightly concave; interorbital space 
as broad as, or a little broader than, the upper eyelid ; tympanum 
very distinct, about two thirds the diameter of the eye. lingers 
one-third, toes three-fourths webbed ; disks smaller than the tym- 
panum ; subarticular tubercles moderate ; a very distinct fold along 
the inner side of the tarsus. The hind limb being carried forwards 
along the body, the tibio-tarsal articulation marks the tympanum 
or the posterior corner of the eye. Upper surfaces with small 
smooth warts, lower surfaces granulate; a strong fold across the 
chest. Greyish or olive above, with irregular darker markings and 
dark cross bars on the limbs; sides of thighs yellow, with a black 
network ; beneath immaculate. Male with a large, dark-coloured, 
external subgular vocal sac. From snout to vent 53 millim. 
Eastern North America. 
Tetaato ae Canada. J. Howell, Esq. [P.]. 
bs G Chippaway. 
Cg: New York. 
d. 9. Philadelphia. 
Oi ol N. America. Dr. J. Green [P.]. 
ve se (Mexico ?) s 
45. Hyla arenicolor. 
Hyla affinis, (non Spix) Baird, Proc, Ac. Philad. vii. 1854, and U.S. 
Mex. Bound. Surv., Rept. p. 29, pl. 38. £. 4-7. 
arenicolor, Cope, Journ. Ac. Philad, (2) vi. 1866, p. 84. 
Tympanum two thirds the size of the eye. Fingers one-third 
webbed. ‘Tibia reaching more than halfway from vent to centre of 
eye. Body rough. Colour ash-grey or green, with numerous 
rounded dorsal blotches ; three transverse bands on each thigh and 
lee ; no vermiculation on anterior and posterior faces of hind legs 
nor on lower part of sides; a light spot under the eye. From snout 
to vent 45 millim. 
Northern Sonora. 
46. Hyla cadaverina. 
Hyla nebulosa, (non Spix) Hallow, U.S, R. R. Surv. x., Williamson’s 
Rep., Rept. p. 21, pl. 10. f. 2. 
cadaverina, Cope, Journ. Ac. Philad, (2) vi. 1866, p. 84. 
Tongue subcircular, openly emarginate, and free behind. Vo- 
merine teeth in two oblique groups between the choane, General 
