214 Mr. O. Thomas on some small 
EXPLANATION OF PLATE VI.* 
Fig. 1. Amphidromus sumbaensis *. 
Fig. 2. Jloresianus. 
Fig. 8. consobrinus. 
Figs. 4,4a, 46. Trochomorpha andamanica. 
Figs. 5, 5a, 5b. pseudosanis. 
Fig. 6. Porphyrobaphe approximata*. 
Figs. 7, 7a. Helix (Xenothauma) Baroni F. 
Fig. 7 6. Ditto *. Nucleus. 
Figs. 8, 8a, 8b. Bulimulus Baroni. 
Fig. 9. Oleacina Underwoodi. 
XIX.—On some small Mammals from Salta, N. Argentina. 
By OLDFIELD ‘THOMAS. 
Dr. C. SpeGAzzint, the well-known fungologist of La Plata, 
has been good enough to present for division between the 
Buenos Ayres and British Museums a small collection of 
Bats and Rodents made by him in Salta during the last 
southern summer season (Dec. 1896—Feb. 1897). 
Among these specimens there are representatives of two 
new mice, now described, while the other species obtained 
also deserve some mention. 
1. Vespertitio, sp. 
a-c. Upper Cachi. 
d. Vina. 
e, f. Pampa Grande. 
This fawn-coloured Vespertilio I can identify with no 
species contained in Dobson’s Catalogue ; but it may perhaps 
prove to be one of Azara’s species, and I do not therefore 
care to describe it as new. 
A full identification of Azara’s bats and murines is very 
much needed before Argentine specimens, whether from the 
north or south, can be satisfactorily determined. Thanks to 
the collections made by Messrs. Perrens, Borelli, Spegazzini, 
and others, I hope soon to be in a position to publish an 
identification of all the species described by the Spanish author 
referred to. 
* I take this opportunity of figuring some of the species described by 
me in this Magazine (ser. 6, vol. xviii., July 1896). 
+ Dr. Kobelt, in the Conch. Cab. ed. ii., Helix, p. 848, pl. xxviii. 
figs. 4-6, places this species in the subgenus Bostryx; he evidently did 
not read the original description or examine his specimen with a lens, as 
he makes no mention of the remarkable sculpture of the nucleus of 
X. Baroni, which separates it from Bostryx and other genera. 
