188 Mr. >. Thomas on 
Of the external characters of B. 6b. frostt I am able to say 
nothing. | . 
It will thus be seen that the Museum is indebted to 
Mr. Frost for a donation of very great scientific value, as 
series of such skulls are very rarely obtained, and this one 
represents both a verification of the Tali Aboe locality and 
the discovery of a new subspecies. 
With regard to references that have been made to “ domesti- 
cated or semi-domesticated ’’ Babirussas, Mr. Frost states that, 
at least in Buru and Tali Aboe, these animals are never 
domesticated, as they will not live in harmony with the native 
pigs, which are ubiquitous. 
He also says that the reason it is so difficult to obtain 
females is that the boars put up such a plucky fight against 
the dogs used in hunting that it is impossible to get at the 
sows until such time as the male has been killed, thus enabling 
the females to get safely away. As a result, very few 
museums possess female specimens, and our own collection 
ouly contains one single immature skull of that sex. 
XXV.—A Further Collection of Mammals from Jujuy. 
By OLpFIELD THOMAS. 
(Published by permission of the Trustees of the British Museum.) 
DurinG the winter of 1919—April to August—Sr. E. Budin 
made collections of mammals on the lower grounds of Jujuy, 
firstly in the near neighbourhood of the town of Jujuy, at an 
altitude of rather more than 1200 metres, and then on the 
still lower levels to the east, where the Rio Lavallen, lower 
down (northwards) called the Rio San Francisco, forms part 
of the upper waters of the Vermejo system. On this river 
the place where Sr. Budin collected was Villa Carolina, some 
20 kilometres to the east of San Pedro de Jujuy, and there- 
fore in the same faunal district as Manoel Hlordi and Tar- 
tagal, where he had previously found such interesting things. 
A few additional specimens were obtained at Yuto, about 
70 km. north of Villa Carolina. 
The present collection adds considerably to our knowledge 
of the Jujuy fauna, and contains examples of four new forms, 
of which the most noticeable is a Marmosa of a more northern 
type than any previously recorded from Argentina. 
