﻿268 Allen's naturalists library. 



stated to be some difference in the form of the unossified 

 spaces in the palate, and in the contour of the lower jaw. As 

 in the case of the Thylacines, the existing Tasmanian Devil 

 may probably be regarded as the direct descendant of the 

 extinct continental form, dwarfed by the smallness of the area 

 it inhabits. 



Distrroution. — New South Wales and Queensland. 



GENUS PROTHYLACINUS. 



Prothylaciuus^ Ameghino, Rev. Argent. Hist. Nat., vol. i., p. 

 312 (1S92). 



This and the following genera from the (Miocene) Tertiary 

 of Patagonia are provisionally included in the present family, 

 where they are placed by their founder. They appear to be 

 more or less closely allied to Thylacinus^ and to have no near 

 relationship to the American Didelphyidce, 



Having the same number of teeth as Thylacinus^ and ex- 

 hibiting a similar inflection of the angle of the lower jaw, 

 the present genus appears to be mainly distinguished by the 

 lower premolar teeth being less closely approximated to one 

 another. 



PROTHYLACINUS PATAGONICUS. 



Prothylac'mus patw^onicns^ Ameghino, Rev. Argent. Hist. 

 Nat., vol i., p. 312 (1892). 



The single species of the genus appear to have been approxi- 

 mately equal in point of size to the existing Thylacine. 



Distribution. — Tertiary deposits of Patagonia. 



GENUS AMPIIIPROVIVERRA. 



This name has been proposed by Ameghino to replace Proio- 

 proviverra, which had been previously employed for a totally 



