90 DTPODOMYS. 



i 



Family Heteromyidae. 

 Subfamily Dipodomyinae. 

 Genus Dipodomys (95). 



Dipodomys insularis Merriam. 



Dipodomys insularis Merr., Proc. Biol. Soc. Wash., XX, 1907, 



P- 77- 



Type locality. San Jose Island, Gulf of California, Mexico. 



Gent. Char. Size small, color pale; skull with maxillary arches 

 broad. 



Color. Upperparts pinkish buff, tinged with vinaceous on rump; 

 lips, cheeks, underparts, limbs, hands and feet white; tail above and 

 beneath with end-tuft purplish brown; sides white. Ex type in 

 United States National Museum. 



Measurements. Total length, 243 ; tail, 143; hind foot, 39. Skull: 

 Occipito-nasal length , 3 5 ; Hensel, 22.4; zygomatic width, 17.1; inter- 

 temporal width, 13.4; length of nasals, 12.8; length of upper molar 

 series, 4.4. Ex type in United States National Museum. 



Dipodomys margaritae Merriam. 



Dipodomys margarita Merr., Proc. Biol. Soc. Wash., XX, 1907, 

 p. 76. 



Type locality. Margarita Island, Lower California, Mexico. 



Genl. Char. Size small, color pale. Skull with slender rostrum,, 

 small. bullae; zygomata squarely spreading. 



Color. Like D. arenivagus but dark hairs intermixed with ground- 

 color, pale pinkish buff lined with dark hairs; rest of pelage, with legs,, 

 hands and feet white; tail short, pale brown above and beneath, sides 

 white, tuft purplish brown. Ex type in United States National 

 Museum. 



Measurements. Total length, 234; tail, 144; hind foot, 38, 

 Skull: Occipito-nasal length, 33.6; Hensel, 22; zygomatic width, 17.1; 

 intertemporal width, 12.9; length of nasals, 12.5; palatal length, ; 

 length of upper molar series, 4.3; length of mandible, 12.8; length of 

 lower molar series, 4.2. Ex type in United States National Museum. 



Dipodomys merriami kernensis Merriam. 



Dipodomys merriami kernensis Merr., Proc. Biol. Soc. Wash., XX r 

 1907, p. 77. 



