WOOD RAT 



Santa Catalina Mountain Wood Rat. — Neotoma mexicana 

 hullata Merriam. 

 R.esembling typical mexicana, but with more ochraceous 

 buff. Upperparts pale ochraceous buff, darker along back 

 because of sprinkling of black-tipped hairs; feet and tail as 

 in typical mexicana; underparts white, a faint buffy band 

 across breast and ochraceous buff on "arm-pits." Total 

 length, 13.4 inches; tail vertebra, 6 inches; hind foot, 1.36 

 inches. Found only in the Santa Catalina Mountains of 

 Arizona. 



Desertonim Group 



Desert Wood Rat. — Neotoma desertonim Merriam, 



Externally resembhng intermedia gilva; small in size; tail 

 short; ears large; pelage long and silky. Upperparts pale 

 pinkish buffy, sprinkled with black-tipped hairs along dorsal 

 region; sides clearer; creamy buff on middle of face, pinkish 

 buff on sides of neck and sometimes across throat ; tail above, 

 brownish to blackish, below, white; feet white; underparts 

 white, sometimes tinged with pinkish buff on abdomen. 

 Total length, 12 inches; tail vertebrce, 5 inches; hind foot, 

 1.2 inches. Found in "Desert regions in southeastern and 

 northeastern California, Nevada, eastern Oregon, northern 

 and western Utah, east to northwestern Colorado, and south 

 along the west side of the Colorado River to northeastern 

 Lower California. Upper and Lower Sonoran Zones." 

 (Goldman) 



Thomas Wood Rat. — Neotoma lepida lepida Thomas. 



Resembling desertonim but yellowish instead of pinkish 

 buffy, and with longer hairs on tail, which is not sharply 

 bicolored. Upperparts yellowish, darkened by black-tipped 

 hairs along back; sides clearer in tone than rest of upper- 

 parts; tail pale grayish, only slightly darker above than 

 below; underparts white to creamy, occasionally with buffy 

 suffusion along abdomen, small areas of basally white 

 pelage on throat, inner sides of forelegs, on breast, and on 

 inguinal region. Total length, 11.4 inches; tail vertebrae, 

 5.5 inches; hind foot, 1.16 inches. Found in "Upper 

 Sonoran Zone in the plateau region of northeastern Arizona, 

 north of the Little Colorado River, and northwestern New 

 Mexico south to Gallup, grading to the southward into 

 stephensi." (Goldman) Plate XXXIIL 



Stephens Wood Rat. — Neotoma lepida stephensi (Goldman). 

 Larger and darker than typical lepida. Upperparts dark 

 grayish buff, darkened along back by dusky hair; pinkish 

 buff on sides; rest of pelage as in typical lepida. Total 

 length, 12.2 inches; tail vertebras, 5.4 inches; hind foot, 1.24 

 inches. Found in "Upper Sonoran Zone along Hualpai, 

 Mogollon, and White Mountains across central Arizona and 

 from the Burro Mountains to the Zuni Mountains in west- 



385 



