ZOOLOGY. 121 



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

 indigenous. 



The long-tailed mouse [Reithrodon longiccmda) ; coast near 

 S.ui Francisco ; five inches ; dark-bi-own. 



Gambel's mouse i^He^peromys gamhelli) ; from Tomales 

 B y to Kern River; five inches; glossy-brown. 



Boyle's mouse {Hesperomys hoylii) ; valley of the American 

 River; eight inches ; glossy-brown. 



Californian mouse {Hesperomys caUfornicus) ; Santa Clara 

 valley ; six inches ; sooty-brown. 



Desert-mouse {^Hesperomys eremieus) ; Colorado Desert ; 

 five inches ; grayish-yellow. 



The bush rat {JS^eotoina mexicana) ; near San Diego and in 

 the Colorado desert ; thirteen inches ; yellowish brown. 



The JSfeotoma fuscip)es^ a rat ; coast valleys, from 38° to 

 40° ; fifteen inches ; reddish above. 



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

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



The long-fiiced mouse (Arvicola lougirostris) ; Pit River 

 valley ; six inches ; yellowish brown. 



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

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



The Arvicola californica^ a mouse much like the species 

 last named. 



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

 four inches ; yellowish brown. 



The Oregon mole {Sccdops 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 

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

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