VESPERTILIONIDZ. 13 
Phyllorhina (?), sp. 
flab. France. 
M. 1641. Cranium, with the mandible attached, and two specimens of 
the left ramus of the mandible ; from the Upper Eocene of 
Caylux (Tarn-et-Garonne), France. The dentition is that 
of Phyllorhina (there being only two premolars in the 
mandible); and the specimens are practically indistin- 
guishable from the skull of the existing Australian Phyl- 
lorhina cervina; and it is therefore most probable that 
they belong to the same genus. The occurrence of that 
genus in the Lower Tertiaries of Europe is quite what 
might have been expected. It may be added that Paleo- 
nycteris robustus, from the Lower Miocene of St. Gérand- 
le-Puy*, and Vespertilio murinoides”, from Sansan, are 
distinguished by the presence of three lower premolars. 
Purchased, 1884. 
M. 1642. Numerous rami of the mandible; from the Upper Eocene 
of Caylux. Purchased, 1884. 
Family VESPERTILIONID®. 
Genus VESPERTILIO, Linn.’ 
a ee 3 3 
Dentation :—I. 5, C. 5, Pm. 5, M. 5. 
It is probable that for paleontological purposes this generic term 
must be employed in a wider sense than in recent zoology, although 
it may be restricted to forms having the above-mentioned dental 
formula‘. 
1 Vide Filhol, Ann, Sci. Géol. vol. x. art. 3, p. 4, pl. i. (1879). 
2 Vide infra. 
3 Syst. Nat. ed. 12, vol. i. p. 46 (1766). 
4 In the so-called Vespertilio bourgquignati, Filhol (Ann. Sci. Géol. vol. vii. 
art. 7, p. 45, pl. xi. figs. 5,8 [1876]), the second and third upper premolars are 
well developed, and the third is larger than the second; in the mandible the 
third premolar is minute. This species does not therefore agree with Vesper- 
tilio, as defined by Dobson (op. cit. p, 284), in which the second and third upper 
premolars (first and second of Dobson) are very small, and the third always 
smaller than the second; the lower dentition is not dissimilar. In respect of 
the upper premolars the fossil agrees with the South-American genera Natalus 
and Thyroptera (Dobson, op. cit. pp. 841, 345); but in those genera pm.3 is a 
large tooth. 
