ZOOLOGY. 121 



Diego ; fourteen inches. There is much doubt whether it is 

 indigenous. 



The long-tailed mouse {Reithrodon longicauda) ; coast near 

 San Francisco ; five inches ; dark-brown. 



Gambel's mouse {^He'^peromys gamhelii) ; from Tomales 

 Biy to Kern River ; five inches ; glossy-brown. 



Boyle's mouse (Hesj^eromys boylii) ; valley of the American 

 River ; eight inches ; glossy-brown. 



Cahfornian mouse iyHesperorays ccdlfornicus) ; Santa Clara 

 valley ; six inches ; sooty-brown. 



Desert-mouse {Hesperomys eremieus) ; Colorado Desert ; 

 five inches ; grayish-yellow. 



The bush rat {N'eotoma raexicanci) ; near San Diego and in 

 the Colorado desert ; thirteen inches ; yellowish brown. 



The Neotoma fuscipes^ a rat ; coast valleys, from 38° to 

 40° ; fifteen inches ; reddish above. 



The Armcola montana^ a mouse ; near Petaluma, Monte- 

 rey, and Lost River ; six inches ; yellowish brown. 



The long-faced mouse (Arvicola loiigirostris) ; Pit River 

 valley ; six inches ; yellowish brown. 



The Californian ground-mouse {Arvicola edax) ; coast val- 

 leys soutli of San Francisco ; six inches ; yellowish brown. 



The Arvicola californica^ a mouse much like the species 

 last named. 



The Oregon mouse {Arvicola oregona) ; near Tanales Bay ; 

 four inches ; vellowish brown. 



The Oregon mole {Scalo2)s tounsendii) is found near the 

 bay of San Francisco, and perhaps in other parts of the state. 

 It is six or seven inches long, nearly black in color, with faint- 

 purplish or sooty-black reflections in the hair. 



§ 93. The Deer Family. — The American elk {Cervus cana^ 

 densis) is found in California as well as in many other parts 

 of the continent. The animal is nearly as large as a horse, 

 and has some resemblance to it in general shape, though 

 smaller, and slimmer in the head, neck, and legs. Its length 

 from the nose to the tail is seven feet ; its height five feet ; its 



