LACEKTID.E. 287 



of a mandible belonging either to this species or to the 

 nearly allied T. nigropunctatus ; from the Pleistocene cave- 

 deposits of Minas Geraes, Brazil. 



Claussen Collection. Purchased, 1845. 



18903 a. Part of the left dentary of a similar mandible ; from Minas 

 Geraes. Same history. 



Family LACERTIM]. 



Postorbital bar and temporal arcade complete ; supratemporal 

 fossa roofed over by bone ; premaxilhe united. Dentition pleuro- 

 dont ; teeth hollow at the base, and the lateral ones bi- or tri- 

 cuspid ; frequently present on the pterygoids. Mandibular symphysis 

 narrow. No dermal scutes. 



Genus LACERTA, Linn. 1 



For palseontological purposes this genus must be used in a much 

 wider sense than in recent Zoology, since many of the allied genera 

 are mainly distinguished by characters not available in the case of 

 fossils. 



Lacerta lamandini, Filhol a . 

 Apparently allied to the existing L. ocellata, but with the lower 

 posterior teeth relatively larger. 

 Hob. Europe (France). 



R. 378. A left dentary bono apparently belonging to this species ; 

 from the Upper Eocene (Lower Oligocene) Phosphorites 

 of Caylux (Tarn-et-Garonne), France. Purchased, 1 884. 



Lacerta (?) bifidentata, Lartet 8 . 

 Very small, with the crowns of the teeth bifid. 

 Hah. Europe (France). 



33276. Two dentary bones and three vertebra), probably belonging 

 to this species ; from the Middle Miocene of Sansan (Gers), 

 France. Presented by M. E. Lartet, 1854. 



1 Syst. Nat. ed. 12, vol. i. p. 359 (1766). 



2 Ann. Sci. Geol. vol. viii. p. 269 (1877). 



3 Notice sur la Collino du Sansan, p. 39 (1851). 



