Canyon Tree-toad. Canyon Tree Frog. 



Desert Tree- to ad. Cope's 

 Hyla. Arizona Tree Frog. 



Plate XXXVII. (xf). 

 i, 2, 4. Females. 3. Tadpole. 



Hyla areni color Cope. 



Range: Southwestern 

 United States, east to western 

 Texas, south into Mexico, 

 west into southwestern Cali- 

 fornia, north into Utah. 

 Habitat: Rocky canyons. 



Size: Adults, 1 1/6-2 1/6 

 inches. (Males, 29-53 mm. 

 Females, 30-54 mm.). 



General appearance: This 

 tree-toad averages smaller in 

 size and duller in color than 

 our common tree toad (Hyla 

 versicolor). This tree toad 

 when sitting quietly looks 

 surprisingly like the little 

 spotted canyon toad (Bufo 

 punctatus)) but when it 

 climbs, its conspicuously long 

 legs and large disks on fingers 

 and toes immediately show it 

 to be a tree toad. It easily 

 clings to a vertical surface 

 and climbs up even a sheet of 

 glass. The back is brown or 

 grayish in color with dark 

 dots scattered over it. The 

 legs are barred with dark 

 areas. There is much yellow 

 or orange on the rear of the 

 legs, in the groin and in the 

 axilla. It is light beneath. The 

 skin is slightly rough, becom- 

 ing more so as it becomes dry. 

 Unlike the Pacific tree frog 

 (Hyla regilla), this species has 

 no stripe through the eye and 

 along the side of the body. 



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