128 Mr. O. Thomas on 



Measurements (the external ones as taken by the col- 

 lector) : — 



Head and body 90 mm. ; tail 53 ; hind foot (c. u.) 24, 

 (s. u.) 22 ; ear 14. 



Skull : greatest length 25*2 ; condylo-incisive length 24 ; 

 zygomatic breadth 15*6 ; nasals 10"5 ; interorbital breadth 

 3*5; breadth of brain-case 13*1 ; height of crown from base 

 o£m 2 7"7; palatilar length 1T8 ; palatal foramina 6*8 ; upper 

 molar series 53. 



Hab. Lago Viedma, Santa Cruz, Patagonia. 



Type. Young adult male. B.M. no. 19. 6. 26. 1. Original 

 number 360. Collected 17th December, 1914, by J. R. 

 Pemberton. Presented by the Buenos Ayres Museum. 



This species differs so materially in size of skull from 

 E. chinchilloides and E. petersoni that it should evidently be 

 distinguished from them. Whether they are distinct from 

 each other I very much doubt, as the typical skulls of the 

 two are of almost precisely the same size, and in describing 

 E. petersoni Dr. Allen contents himself by referring to the 

 Tierra del Fuego locality of chinchilloides without assigning 

 any reason for the separation of the Patagonian animal 

 from it. 



Although not old, the type of E. dabbenei is not materially 

 younger than that of E. chinchilloides. 



XIX. — List of Mammals from the Highlands of Jujuy, North 

 Argentina, collected by Sr. E. Budin. By Oldfield 

 Thomas. 



(Published by permission of the Trustees of the British Museum.) 



The following is a list of some mammals collected by 

 Sr. Budin at Abrapampa and Casabindo, on the high plateau 

 of North-western Jujuy. The former locality is at an alti- 

 tude of about 3500 metres, and the latter 4000, while there 

 are, in addition, a number obtained higher up on the Casa- 

 bindo Cerro or Volcano, as high as 4800 m. 



As with the Maimara mammals, of which I gave an account 

 in 1913, these collections clearly indicate the close affinity 

 of the highland Jujuy fauna with that of Bolivia, this 

 being represented by the series sent home by the late 

 Mr. Perry O. Simons. By their help I am enabled more 



