AMPHIBIANS 



171 



R. catesheiana Shaw. Bullfrog. Body very large, green or greenish 

 brown in color, being usually greener on the head and shoulders than 

 more posteriorly ; legs spotted or barred ; beneath white ; length 200 mm. ; 

 hind leg 250 mm.: America from the Atlantic to the Rockies, in ponds 

 and streams; the largest and most aquatic frog, apparently rarely 

 leaving the water; development of tadpole completed in the second or 

 third summer; often common. 



R. sylvatica LeC. Wood-frog (Fig. 95). Body small and slender, 

 with long hind legs, and brown or faun color, often with a yellowish or 

 reddish tone; a wide dark bank on the car passing forward to the eye, 

 and in some cases to the snout, and backward to the shoulder; legs 



Fig. 96. — Rana areolata {from Dickerson). 



often barred; dorso-lateral ridges Hght; length 48 mm.; hind leg 86 mm. : 

 America from the Atlantic to the Great Plains; southward to South 

 Carolina; northward to Quebec; common in the east; rare in the west; 

 the least aquatic of the frogs, being found usually in damp woods. 



R. areolata Baird & Girard (Fig. 96). Body brown or olive in color, 

 mottled or speckled with lighter and covered with rounded dark spots; 

 skin rough and warty; length 75 mm.; hind leg 150 mm.: Texas, and 

 northward in the Valley of the Mississippi into Illinois and Indiana. 



R. (Bsopus Cope. Gopher frog. Body short and squat, with a very 

 large head; color gray or brown, with large black spots on the back and 

 side; length 62 mm.; hind leg 74 mm.: South Carolina to Florida and 

 Louisiana; often hiding in holes in the ground. 



R. cantahrigensis Baird. Body small and similar to R. sylvatica 

 in size and coloration, but with shorter legs; length 52 mm.; hind leg 

 70 mm. : northern North America from Michigan to Alaska and Hudson 

 Bay; habits similar to those of R. sylvatica. 



