348 



ZOOLOGY 



in two long, parallel strings of albumen, which lie coiled at the 

 bottoms of ponils, hatch out in ^laj', and metamorphose about 

 a montli later. " 



The frogs (Ranidic) are almost confined to the Northern 

 Hemisphere and tlie East Inehes. In the northern United 



Fig. 328. — Green !i<<'^, Ratia clnmilnns. Xat. size. Photo, of living aniiiial 

 by W. 11. C. P. 



States there are some eight species, of which the com- 

 monest are : the leopard-frog, of green color, with irregular 

 black blotches edged with whitish ; the pickerel-frog, hght 

 brown, with two ro^vs of olilong scjuare brown blotches on the 

 back ; the wood-frog, living in damp woods, pale reddish browni 

 with a brown band on the side of the head ; the green frog, of 

 uniform bright green to lirown color, with numerous small 

 dark spots, and with glandular folds (Fg. 328) ; and the bull- 

 frog, of great size, green, with small, faint spots on the 

 back. 



