XXVI. 



Jumping-mouse. 



Zapus hudsonius (Zimmerman). 



{Zapus, proposed by Coues in 1875, from the Greek za, an intensive particle, and 

 potis, a foot, hence ' remarkable foot.' Latin hudsonius, of the Hudson's Bay 

 Territorj'.) 



Dipus hudsonius ZiMM., 1 780, Geog. Gesch. Men. U. Vier 



Thiere II, p. 358. 

 Zapus hudsonius Coues, 1875, Bull. U. S. Geol. Sur. Ter. 



2d Ser., No. 5, p. 253. 



Type Locality. — Hudson's Bay. 



French Canadian, la Gerhille du Canada. 

 Cree, Kwa-kwash'-kan-ah'-he-gah-not'-see. 

 OjiB. & Saut., Kwash-kwash-kwut-tah'-he-gah-not'- 

 see. 



The Family DipodidcB, of which the African Jerboas are 

 typical representatives, consists of small mouse-like Rodents, 

 whose hind-legs are enormously de- 

 veloped for leaping, and whose tails 

 are very long, usually tufted. 



It includes the Jerboas, the 

 Jumping-hares, and the Jumping- 

 mice. 



The genus Zapus (Coues, 1875), 

 in addition to the Family characters, 

 has the tail slender, tapering, untuft- 

 ed, and very long (about 5 inches), 

 exceeding the head and body to- 

 gether; on front paw, 4 fingers and a knob-like thumb, 5 toes 

 on hind-feet; ears, very small; small cheek pouches; all 



587 



Fig. 172 — Skull of Zapus hudsonius. 

 (One and one-half times natural size.) 

 Showinjj minute premolars. Cut from Preble's 

 Revision of Zapus. N. A. Fauna. No. 15, Bio- 

 lotrical Survey, U. S. Department of Agricul- 

 ture. 



