RANID^E. LXXVH. 187 



Y. FAMILIES OF PROTEIDA. 



* Hind legs present; both jaws with teeth; form salamander-like. 



PnoTEnxE, 87. 

 ** Hind legs wanting ; upper jaw toothless; form eel-like. 



SLRENHXE, 88. 



OEDEE W.-AJSTTTEA. 



(The Tailless Batracliians.) 



Body nearly or quite naked, short and broad; all four 

 limbs present; tail wanting in the adult; young (tadpole) 

 fish-like, with broad head, external branchiae, a long tail, 

 no limbs and no teeth; the intestinal canal very long, 

 adapted for a vegetable diet; from this form by degrees 

 it develops into the adult animal which is always more 

 or less Frog-like. 



FAMILY LXXVIL RANID^E. 



(The Frogs.) 



Tailless Batrachians with the tongue adherent in front 

 and more or less free behind; fingers four, toes five, 

 both commonly webbed; ear well developed, jaws and 

 usually vomer, with teeth; chiefly aquatic. Genera 

 fourteen, species about fifty; very abundant in tropical 

 America. 



* Vomerine teeth present ; no finger opposed to the others ; tongue 



nicked behind ; toes full-webbed. . . RANA, 1. 



/. RANA, Linnaeus. FROGS. 



* Back with large distinct spots arranged in more or less regular 



rows ; back with two conspicuous yellowish folds. 



1. R. halecina, Kalm. LEOPARD FROG. COMMON 

 FROG. General color greenish, often bright, sometimes 

 brassy, with many pale-edged dark spots which lie in 

 two irregular rows on back; usually two large spots 



