172 VERTEBRATE ANIMALS OF THE UNITED STATES 



R. septentrionalis Baird. Mink frog. Body small, rather stout, 

 light olive in color with mottlings of darker; legs blotched or banded; 

 belly light yellow; length 56 mm.; hind leg 97 mm.: Canada; northern 

 New England to Minnesota. 



R. virgatipes Cope. Body small, with short legs and large ear and 

 eye; color brown, with 4 narrow longitudinal stripes; throat yellow; 

 sides yellowish brown, with large spots; belly white, spotted with brown; 

 length 55 mm.: in pine barrens. New Jersey to Georgia. 



R. grylio Stejneger. Body large, green in color in front and olive 

 behind, with many irregular black spots; beneath light, unspotted 

 except posteriorly; length 125 mm.; tympanum large: Georgia and 

 Florida to Louisiana. 



R. aurora B. and G. Body brown, yellowish or olive in color, often 

 with numerous small darker spots; sides and hind legs reddish orange; 

 belly light, mottled; skin smooth; length 75 mm.; hind leg 125 mm.: 

 Pacific slope from Lower California to Vancouver Island; common 

 towards the north. 



Suh species of R. aurora 



R. a. aurora (B. and G.). Skin smooth: northern forms. 



R. a. draytoni (B. and G.). Skin rough: southern forms. 



R. onca Cope. Body rather small, green or brownish in color, with 

 several irregular rows of dark spots on the back and sides; belly white; 

 length 60 mm.; legs short; skin smooth: Utah and Nevada. 



R. hoylii B.and G. Body small, with a warty skin and very long legs; 

 color brown, olive or red, with obscure round brown spots; beneath 

 white anteriorly, yellow posteriorly; dorso-lateral ridges broad and 

 inconspicuous; length 45 mm.; hind leg 75 mm.: California and Oregon; 

 terrestrial. 



Subspecies of R. hoylii 



R. b. boylii Baird, A light patch on the forehead: southwestern 

 Oregon and California. 



R. b. mucosa Camp. Size large; ground color yellow or light brown; 

 no light patch on the forehead : in the mountains of southern California. 



R. b. sierrce Camp. No light patch on the head; head narrow; hind 

 leg short : southern Sierra Nevadas. 



R. pretiosa (B. and G.). Body large, yellowish or reddish brown in 

 color with 2 rows of irregular black spots between the dorso-lateral 

 ridges; beneath light, marbled with gray; flanks and under surface of 



