188 BATKACHIANS. 



between eyes; legs barred above; belly pearly or yel- 

 lowish, each side of back with a well-marked fold. N. 

 Am., the commonest species. 



2. R. palustris, Le Conte. PICKEREL FROG. Brownish 

 with the spots square, in four rows; young golden green; 

 body with two glandular folds on each side; slender. E. 

 U. S. 



** Back with small dark spots or none. 



3. R. clam Hans, Merrem. GREEN FROG. SPRING 

 FROG. Bright green, darker on the flanks, every where 

 spotted with blackish; color sometimes rather brown 

 than green; white below; glandular folds conspicuous; 

 size moderate. U. S., E. of the mountains. (R. horico- 

 nensiS) Holbr. R. fontinalis^ LeC.) 



4. R. catesbiana, Shaw. BULL FROG. Greenish, of 

 varying shades, with numerous small, indistinct darker 

 spots, head usually of a very bright pale green ; glandu- 

 lar folds little marked; very large, a foot or more long 

 when adult. E. U. S., common; well noted for its rich 

 bass notes. (J?. pipiens, Auct., not of L.) 



5. R. temporaria, (L.) var. sylvatica, (Le C.) Gthr. 

 WOOD FROG. Color reddish brown; a dark band on 

 each side of head through eye and ear; quite small. E. 

 U. S., common; scarcely aquatic. (R. cantabrigeiisis, 

 Baird, the Cambridge Frog, from E. Mass., N. and W. 

 is another variety of this European species.) 



FAMILY LXXVIIL SCAPHIOPID^E. 



(The Spade Foots.) 



Terrestrial frogs having the heel provided with a more 



or less developed spur. Genera three; species ten or 



more. In Europe, America, and Australia. 



* Toes completely webbed ; forehead and crown bony, rough ; 



skin slightly tuberculate. ; . . SCAPHIOPUS, 1. 



