AMPHIBIANS 



i8i 



R. palustris LeConte. Pickerel frog (Fig. 94). Body pale brown 

 above, with 2 light dorso-lateral ridges, between which are 2 rows of 

 large squarish or rounded spots; the sides and legs with similar spots; 

 beneath white in front and yellowish behind; length 70 mm.; leg 115 



Fig 



93. — Rana pipiens {from Park 

 Museum Bulletin). 



Fig. 94 . — Rana palustris {from Park 

 Museum Bulletin). 



mm.: North America, from the Atlantic to the Great Plains; common 

 in small streams and ponds or in adjacent meadows. 



R. clamitans Latreille. Green-frog; spring-frog. Body large, 

 usually green on the head and shoulders and brown posteriorly, and 

 with small irregular spots; dorso-lateral ridges hght; sides and legs with 



Fig. 95. — Rana sylvatica {from Dickerson) . 



dark bars and spots; throat of male yellow, of female white; belly 

 white; length 100 mm.; hind leg 150 mm.: America, from the Atlantic 

 to the Great Plains; common in ponds and streams; except the bullfrog, 

 the most aquatic and the largest frog; development of tadpole com- 

 pleted in the second summer. 



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. ; 



