184 Hollister — Five New Mammal* from Asia. 



General characters. — Like Eutamias asiaticus asiaticas, but darker and 

 less brightly colored ; rump, hips and legs especially darker, with less 

 bright yellowish-buff in the coloration. 



Skull. — The skull averages larger than that of E. asiaticus; posterior 

 border of zygomatic process of squamosal leaves braincase at same angle 

 as general bow of zygomatic arcli [in asiaticus more at right angles with 

 sides of zygomata, with conspicuous concavity behind]. 



Measurements of type. — Head and body, 167 millimeters; tail vertebrae, 

 105; hind foot, without claws, 35.5. Skull: greatest length, '41.4; condy- 

 lobasal length, o7.5; zygomatic breadth, 2.'!. 4; least interorhital breadth, 

 9.5; alveolar length of upper tooth row, <>.5. 



Remarks. — As it becomes necessary to divide into two forms the chip- 

 munks heretofore known as Eutamias asiaticus asiaticus (Gmelin), the 

 name asiaticus may properly be restricted to the subspecies characterized 

 by Dr. .J. A. Allen in 1903* from Gichiga. In the present account of 

 E. a. altaicus, I have been able to compare the series of twelve specimens 

 of the new form directly with six specimens from Gichiga, in the same 

 pelage, kindly lent me by Doctor Allen. 



* Bull. Amer. Mus. Nat. Hist., XIX, pi>. 137-139, 190:!. 



