4g CRT A 379 
Closely allied to H. arborea. The head is smaller, the fingers are 
more slender, and the web between them very indistinct ; the toes 
are only one-third or half webbed. The hind limb being carried 
forwards along the body, the tibio-tarsal articulation marks the tym- 
panum or the posterior border of the eye. Olive above; a brown, 
light-edged streak from the nostril through the eye and the tympa- 
num, along the side of the body; upper lip with a brown and light 
margin; beneath whitish, immaculate. Male with an external 
subgular vocal sac. From snout to vent 40 millim, 
Mexico. 
A. Back with elongate spots more or less confluent into longitu- 
dinal bands, (/7/. eaimia.) 
aD" City of Mexico. Mr. Doorman [C.]. 
B, Back uniform ; hinder side of thighs brownish, white-spotted. 
(H, euphorbiacea.) 
b-c. 9. Mexico. M. Sallé [C.]. 
d. Skeleton. Mexico. M. Salle [C.].(. ‘Types of Z. 
er Go. Cordoya. M. Sallé [C.]. ( exphorbiacea. 
TGS. Cordilleras. 
58. Hyla arborea. 
Hyla arborea, Giinth. Cat. p. 107. 
Rana arborea, Linn, S. N. i. p. 857; Résel, Hist. Ran. p. 32, pls. 9- 
12; Sturm, Deutschl, Faun, iii. Heft 1. 
Hyla viridis, Laur. Syn. Rept. p. 83; Daud. Rain. p. 14, pl. 1, and 
Rept. vil. p. 25; Gravenh. Delic. p. 25; Bonap, Faun. Ital.; Dum. 
&§ Libr. p. 581; Fatio, Vert. Suisse, ii. p. 423; Lessona, Atti Ac. 
Line. i., Mem. Cl. Se.-fis. Se. 1877, p. 1090, pl. 3. 
Calamita arboreus, Schneid. Amph. p. 153; Merr. Tent. p. 170. 
Hyla arborea, Cuv. Rk. A.; De Betta, Faun. Ital., Rett. Anf. p. 61; 
Schreib. Herp. Eur, p. 106; Leydig, An. Batr. p. 94. 
Hyas arborea, Wagl. Syst. Amph. p. 201. 
Dendrohyas arborea, 7'schudi, Batr. p. 74. 
Tongue subcircular, slightly nicked, and free behind. Vomerine 
teeth in two small transverse or slightly oblique groups between the 
choanx. Head moderate, broader than long; snout rounded, as 
long as the diameter of the orbit; canthus rostralis distinct ; loreal 
region slightly oblique, slightly concave ; interorbital space as broad 
as, or a little broader than, the upper eyelid; tympanum distinct, 
about half the diameter of the eye. Fingers slightly webbed at the 
base ; no projecting rudiment of pollex ; toes two-thirds webbed ; 
disks a little 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 a little beyond. Skin smooth above, 
granulate beneath. Greenish above, uniform whitish beneath, 
Male with a large, brown, external gular vocal sac. From snout to 
vent 51 millim. 
_ Europe; temperate Asia; North Africa, 
