612 Mr. O. Thomas on 



8. Eaneomys {Auiiscomys) leucurus, Tlios. 



? . 1428, 1443, 1445. Sierra de Zeiita, 4500 m. 

 The type came from La Lagnnita, Maimara, in tlie near 

 neighbourhood of the present locality. 



9. Neotomys vnlturnus, sp. n. 



S. 1452 ; ? . 1427, 1430, 1434, 1435. Sierra de Zenta, 

 4500 m. 



Paler and with rather longer tail than ebriosiis. 



Size and general essential characters apparently quite as in 

 ehriosus. Fur long and fine, ordinary hairs of back about 

 12 mm. in length, overlapped by fine long piles attaining 

 24 mm. General colour a fine grizzled mixture of grey and 

 buffy, almost as in pale forms of Sigmodon, the fore back 

 more grey, the rump becoming more and more buffy, and 

 cuhiiinating in a rich ochraceous patch at the base of the tail. 

 Sides greyer. Under surface slaty grey, finely washed "witli 

 whitish. Chin and interramia white. Muzzle with a 

 prominent patch of rich ochraceous. Ears brown, a few hairs 

 on and around them buffy. Hands and feet witli pale buff^y 

 metapodials and white digits. Tail longer than in ebriosus, 

 brown above, buffy on sides, dull whitish bolow. 



Skull appareiitiy quile as in ehriosus. 



Dimensions of the tvpe : — 



Head and . body 155 ram.; tail 73; hind foot 22"5 ; 

 car 18. 



Skull : greatest length 30 ; condylo-basal length 27'6 ; 

 zygomatic breadth 17 ; nasals 12*2 X 6 ; interorbital breadth 

 3'1 ; palatilar length 12*6 ; palatal foramina 6*9 ; upper 

 molar series 6. 



Hob. as above. Two specimens were previously obtained 

 by Sr. Budin at Lagunita, Maimara, 4300 m. 



Type. Old female, B.M. no. 21. 11. 1. 34. Original num- 

 ber 1427. Collected 6th May, 1921. 



Tlie discovery of Neotomys in Jujuy is very unexpected, 

 as its only known locality has hitherto been Central Peru, 

 where Knlinowski got the type, a spirit-specimen, and P. O. 

 Simons, shortly afterwards, obtained a skin. The Jujuy 

 animal is remarkably like that of Peru, differing only in 

 having a longer tail and a paler general colour, while the 

 greyish fore back is less strongly distinguished from the 

 bufi'y rump, and the under surface is a duller grey, less 

 whitened on the sides of the belly, and without the dark 

 brownish sternal band which is present on the skin sent by 



