DIPODOMYS. 347 



Geogr. Distr. Lower California, Mexico, into southern California. 



(icii!. Char. Similar to D. merriami, smaller, tail longer and 

 without black markings on face and nose. 



Color. Above buffy gray, sides buff; under parts white; usual 

 white eye and ear spot, and stripe on thighs; dark dorsal and ventral 

 tail stripes brownish black; pencil sooty black; lateral stripes white; 

 orbital ring black; under surface of hind, foot brownish. 



Measurements. Total length, 248; tail vertebrae, 154; hind foot, 

 35; ear, 10. Skull: basilar length, 21; mastoid breadth, 22.5; inter- 

 orbital constriction, 13; length of nasals, 13; length of upper molar 

 series on crowns, 3.6; length of mandible, 13.9; height of coronoid 

 process from angle, 5.1. 



c. xiiniolus (Dipodomys), Rhoads, Proc. Acad. Nat. Scien. Phil., 

 1893, p. 410. Elliot, Syn. N. Am. Mamm., 1901, p. 234. 



similis Rhoads, Proc. Acad. Nat. Scien. Phil., 1893, p. 41 1. Elliot, 



Syn. N. Am. Mamm., 1901, p. 234. 

 ALLIED KANGAROO RAT. 



Type locality. Agua Caliente, Mojave Desert, California. 



Geogr. Distr. Lower California and State of Sonora, Mexico, into 

 California. 



Genl. Char. Similar to D. descrti, but smaller; pencil not white. 



Color. Above pale yellowish brown like D. descrti, inclining to 

 cinnamon on rump; beneath white; tail, upper fourth dark ashy 

 extending to tip, brownish black on middle third of under side; feet 

 white, soles slightly darker. 



Measurements. Total length, 241; tail vertebrae, 149; hind foot, 

 38; ear from crown, 9; pencil, 35. Skull: basilar length, 21.8; mastoid 

 breadth, 24; interorbital constriction, 14.5; length of nasals, 13; 

 length of mandible, angle to base of incisors, 13.8; coronoid process 

 from angle, 5.6. 



(I. f/rcnirfto'nfi Elliot, Pub. Field Columb. Mus., in, 1903, p. 249. 

 Zoology. 



Type locality. San Felipe, Lower California, Mexico. 



d'ciil. Char. Size small, similar to D. m. simiolus, but paler; ear 

 larger; hind foot shorter. Skull narrower across mastoids and parietal ; 

 nasals shorter. 



Color. Upper parts pinkish buff, palest on the head and darkest 

 on rump, the plumbeous under fur showing in places; no black 

 streaks on face; white spots behind ears and above eyes; upper parts 

 of sides from eye to rump like color of rump; nose, sides of face, 

 lower part of flanks, entire under parts and limbs, pure white; a 

 narrow line of pinkish buff across thighs; hands yellowish white, 



