PHALANGISTIDJS. 189 



fteeu1)ocf)tru0 cautJtbotbuluS (Kerr 1 ). 

 Syn. Didelphys caudivolvula, Kerr 2 . 

 Hob. New South Wales, and Queensland. 



M. 3651. Fragment of the right maxilla, containing pm. 4 and m. 1 ; 

 from a cave in the Wellington Valley, New South Wales. 

 Presented by the Trustees of the Australian Museum. 



Subfamily THYLACOLEONTIN^;. 



The lower incisor is but slightly proclivous, there is no lower 

 canine, the true molars and early premolars are small and almost or 

 quite functionless, while the last premolar is of enormous size, 

 laterally compressed, and trenchant ; it is not known whether this 

 tooth was preceded by a milk-molar. 



Genus THYL ACOLEO, Owen 3 . 



Dentition : I. f, C. J, Pm. |, M. \. This is the only genus of the 

 subfamily. The structure of the foot is unknown. Some of the 

 functionless teeth were deciduous, and perhaps sometimes altogether 

 wanting. 



Kg. 28. 



Thylacoleo carnifex.The skull : from the Pleistocene of Australia. . 



Thylacoleo carnifex, Owen 4 . 



This is the type and only species, and is much larger than any 

 existing member of the family. 

 Hab. Australia. 



1 Linn. Anim. Kingd. p. 196 (1792). Didelphys. 2 Loc. tit. 



3 In Gervais's ' Zool. et Pal. Fra^aises," 1st ed. pt. i. p. 192 (1849-52). 



4 Phil. Trans. 1859, p. 309. 



