233 



character with pm. 4 of the following mandibles, with 

 the corresponding teeth of which the true molars also agree 

 in size and structure. 

 Presented by the Trustees of the Australian Museum, 1870. 



42663. Fragment of the left maxilla, containing the four true 

 molars (the first and fourth imperfect) ; from the same 

 locality. Same history. 



40001. Part of the left ramus of the mandible, containing all the 

 (Fig.) cheek-teeth except ^^ ; from the Pleistocene of Gowrie, 

 Queensland. Figured by Owen in the ' Phil. Trans.' 1874, 

 pi. xxii. fig. 9, and pi. xxiv. figs. 7, 8, and also in the 

 ' Extinct Mammals of Australia,' pi. Ixxxii. fig. 9, and 

 pi. Ixxxiv. figs. 7, 8. 



Presented by Sir D. Cooper, Bart., 1866. 



M. 3673. Cast of the slightly imperfect left ramus of the mandible 

 of a nearly adult individual, showing all the teeth ; p m . 4 

 being only partially protruded. The original, which is 

 preserved in the Museum at Oxford, was obtained from the 

 Pleistocene of Queensland, and is figured by Owen in the 

 ' Phil. Trans.' 1874, pi. xxii. figs. 5-8, and also in the 

 ' Extinct Mammals of Australia,' pi. Ixxxii. figs. 5-8. 



Presented by Prof. J. Phillips, 1872. 



42663. Fragment of the left ramus of the mandible of an immature 

 individual, showing m7 3 fully protruded and m . 4 in alveolo ; 

 from a cave in the Wellington Valley. 

 Presented by the Trustees of the Australian Museum, 1870. 



Genus PROCOPTODON, Owen 1 . 



The mandibular symphysis is anchylosed in the adult, and the 

 ramus of the mandible short and deep, the diastema being also 

 short. The premolars resemble those of Sthenurus in structure ; 

 but the true molars are elongated, and usually have their enamel 

 thrown into a series of vertical folds. There are large palatal 

 vacuities ; and the lower incisors are subcylindrical. 



The metatarsals referred by Owen to this genus (infra, p. 248) are 

 of a shorter type than those of the existing species of Macropus, and, 

 if rightly associated, indicate that the disproportion between the 

 anterior and posterior limbs was less marked than in the latter. 

 1 Phil. Trans. 1874, p. 788. 



