264 



ZOOLOGY 



holding on to objects by suction. Of these there are over 

 one hundred and seventy species, especially abundant 

 in tropical America. In one member of this family the 

 female has a pouch on the back, opening in the hinder 

 third of the trunk (Fig. 248). In this the young are 



FIG. 249. Bufo lentiginosus, the American toad. Photo, of living animal, 

 resting on the ground, by W. H. C. P. 



brooded. The most common tree-toad of the northern 

 United States extends from Canada to Florida, and west 

 to Kansas. It is variable in color, being green or brown, 

 according to the color of the background, leaf, or bark, 

 on which it is resting. It has a loud, coarse trill, often 



