Oregon Red-legged Frog. Western Wood- 

 frog. Western Wood 

 Frog. 



Plate LIX. i. Male (xf). 

 2. Female (xj). 3. Female 

 (xf). 



Ran a aurora aurora (Baird 

 and Girard). 



Range: British Columbia, 

 Washington, Oregon, south 

 along the coast of California 

 to Eureka. 



Habitat: Amongst the vege- 

 tation of the coastal belt 

 forests. 



Size: Adults, 1 3/4-3 1/2 

 inches. (Males, 44-63 mm. 

 Females, 52-87 mm.). 



General appearance: Dis- 

 tinctly a wood frog, the mask 

 is evident in many. It is 

 medium in size, moderately 

 stout, and smooth skinned. 

 The head is narrowly oval 

 from above, the profile thin. 

 The back is brownish or olive 

 frequently with inky spots, 

 sometimes becoming blotches. 

 Sometimes a few of these 

 spots have light centers. Fre- 

 quently there is a dark bar 

 across the upper arm. The 

 under surfaces are light, ob- 

 scurely mottled with dark. 

 There is red on the sides of 

 the body and on the con- 

 cealed parts of the legs, feet 

 and under arms. The light 

 line along the upper jaw ends 

 in a fold at the corner of the 

 mouth. 



Structure: Frog medium in 

 size; skin smooth; ridge from 



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