VESPERTILIONTDJB. 13 



Phyllorhina (?), sp. 



Hob. 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 Palceo- 

 nycteris robustus, from the Lower Miocene of St. Gerand- 

 le-Puy \ and Vespertilio murinoides 2 , 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 VESPEUTILIONID^l. 

 Genus VESPERTILIO, Linn. 3 

 Dentition : I. f, C. \, Pm. J, M. |. 



O* L* o" o 



It is probable that for palaeontological 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 4 . 



1 Fide Filhol, Ann. Sci. Geol. vol. x. art. 3, p. 4, pi. i. (1879). 



2 Videinfrct. 



3 Syst. Nat. ed. 12, vol. i. p. 46 (1766). 



4 In the so-called Vespertilio bourguignati, Filhol (Ann. Sci. Geol. vol. vii. 

 art. 7, p. 45, pi. 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 denned 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. 341, 345) ; but in those genera jSnTs is a 

 large tooth. 



