422 FOUR FOOTED A21ERICANS 



Pouched, or Mole Gopher . . Geomys bursarius. 



Length ol! body, H\ inches ; tail, 3 inches. 



Gray Pocket Gopher Thomonys talpoides. 



Length of body, 7 inches ; tail, 2 1 inches. 



Family of VoticiiEu Kat.s axu AIice 

 Heteromyidae 



(Niliiilj(M- of N'ciiUi AiiicriKlli Spc-ck'S, Thirty to F.irty) 



Kangaroo Rat . . . Perodipus richardsoni. 



Length of bi"ly, •">] inches; tail, 0| inches. 



Pocket Mouse . . Perognathus paradoxus. 



Length of body, 4'- inches ; tail, :!| inches. 



JuJU'i.\'(; .MoiisE Fa.^itly 

 Zapodidse 



(XiiiiibiT of North .Vnnivit'iui SjK-ciiv'^. Four t't Five) 



Ground animals, with long- springy hind legs and five-toed 

 feet. 



Jumping Mouse . . . Zapus hudsonius. 



Length of body, 3 inohe.s ; tail, 5 inches. 



Porcupine Fa.mily 

 ErethizontidEB 



(Ximibfr of North Ainoric.iii Spufies, Two) 



Of chunky build ; legs of even length ; back covered 

 with stout quills, almost hidden by long hairs ; short, 

 stumpy tail. A vegetable eater. 



Canada Porcupine Ereihizon dorsatus. 



Length of body, 2^ feet ; tail. Si inches. 



Pika Fa JULY 

 Ochotonidae 



(Number of North Ajoorican Spocie.'^, Two) 



No tail ; short ears ; legs of equal length. 



Pika, Little Chief, or Whistling Hare . Ochotona princeps. 



Length of body, 7} inches ; uo tail. 



