new Bats and Rodents from S. America. 407 



Dimensions of two specimens, measured in flesh; the first 

 the type : — 



Head and body 117 and 125 mm. ; tail 122 and 135 ; 

 hind foot 25 and 30; ear 27 and 26. 



Skull of type : greatest length 30'7 ; condylo-incisive 

 length 28*1; interorbital breadth 4 ; palatilar length 13*6 j 

 palatal foramina 7"2 ; upper molar series 5'3. 



Hah. Gal^ra, W. of Oroya, Department of Junin, Peru. 

 Alt. 4800 m. 



Ti/pe. Aduh female. B.M. no. 0.7.7.38. Orioinal 

 nuniber 870. Collected 26th February, 1900, by P. O. 

 Simons. Presented by Oldfield Thomas. 



This is a dark well-haired mountain race of Ph. darivini\ 

 a widely spread species which ranges over the whole Andean 

 area from Central Peru at least as far south as Santiago and 

 Valparaiso in Chili, whence the Museum owes a good series 

 from our generous correspondent Mr. J. A. Wolffsohn. By 

 its dark colour it resembles the southern forms and differs 

 from the other Peruvian and Bolivian representatives of 

 darioini, which are pale and may mostly be referred to the 

 following subspecies. 



Phyllotis darioini Umatus, subsp. n. 



A pale race of Ph. darwini. 



Size as in true darioini. Fur fine and soft. General 

 colour pale greyish drab with a variable suffusion of buffy ; 

 the sides especially buflfy. Face clearer grey. Under 

 surface dull creamy white. Ears large, pale brown. Hands 

 and feet white. Tail not very heavily haired, brown above 

 and white below, some specimens with an all-white tail- 



Skull as in true darwini. 



Dimensions of the type (measured in flesh) : — 



Head and body 115 mm. ; tail 150 (generally 130-135) ; 

 hind foot 25 ; ear 28. 



Skull : greatest length 31*4 ; condylo-incisive length 29*2 ; 

 zygomatic breadth 16; interorbital breadth 4'4; upper molar 

 series 4'8. 



Hah. Chosica, near Lima, Peru. Alt. 850 m. 



Type. Old male. B.M. no. 0. 5. 7. 43. Original number 

 820. Collected 29tii January, 1900, by Perry O. Simons. 

 Presented by Oldfield Thomas. 



This northern representative of Ph. darwini is paler and 

 has a longer tail than the typical Chilian form. Specimens 

 referable to it are in the Museum from various parts of the 



