354 



BRANCH CHOEDATA 



Jumping-mice (Dipod'idce) (Fig. 287) are represented by the American 

 jumping mice and the Palsearctic Jerboas. They have long tails and the 

 hind legs are greatly elongated and adapted for taking enormous leaps. 



Fig. 286. — Lombardv poplar l^illrd by field mice. (Farmer's Bulletin 

 No. 335, U. S. Dept. of Agriculture, October, 1908.) 



Fig. 287. — Jumping mouse. (After Tenney.) 



The pouched gophers (Geomy'iihr) ha\c large check pouches opening ex- 

 ternally (Fig. 288, a, b, c). These burrowing rodents are restricted to Cen- 

 tral America and the central plains of North America. Thej' have small ears 

 and eyes. The claws of the anterior limbs are strong. 



