The Froi. P.dok 



Plate I 



Figs, i and 2.— The SPOTTED SALAMANDER {Amblysto?na punctatum Linn). Providence, R. \. [Enlarged.] 

 The spherical eggs enclosing the embrj-os are within an external mass of jelly. The full-grown larva has a tail fin and ex- 

 ternal gills adapting it to water life. 



Fig. 3.— spotted SALAMANDERS i year old. Black and yellow. These are typical representatives of the 

 Urodehi which together with the Sahentia. or frog-like forms, constitute the two classes of the North American 

 Batrachia. 



