NOTOTHERIID^. 167 



46066. The greater portion of the right ramus of the mandible of a 

 (Fig.) slightly older but smaller individual ; from Queensland. 

 The first and second true molars are in use, and m. 3 and 

 i^4 in alveolo. Pigured by Owen in the ' Extinct Mam- 

 mals of Australia,' pi. cxxv. 



Presented by Dr. George Bennett, 1874. 



M. 3639. Hinder part of the left ramus of the mandible, showing 

 the slightly worn m. 4 ; from Australia. Same history. 



45871. Part of the right ramus of the mandible, with the crowns 

 of the teeth broken off; from Australia. 



Presented by Dr. George Bennett, 1874. 



46838. The condyle of a mandible, provisionally referred to this 

 genus : from Queensland. This specimen closely resembles 

 the corresponding element of Phascolomys and of Dijoro- 

 todon, and is totally unlike that of Maeropus. 



Presented by Dr. George Bennett, 1874. 



48424. A worn tooth, which is apparently a first lower true molar 

 of this species; from Queensland. Labelled by Sir R. 

 Owen Pcdorchestes major. 



Presented by Dr. George Bennett, 1878. 



46914. The right humerus ; from the Pleistocene of the Castlereagh 

 {Fig.) River, Kirban, near Mendoran, New South Wales. Figured 

 by Owen in the ' Extinct Mammals of Australia,' pi. cxxvii. 

 (reversed). In general structure this bone closely re- 

 sembles the humerus of Phascolomys, but the deltoid ridge 

 is double, and the entocondyle more flattened. 



Presented by W. L. R. Gipps, Esq., 1875. 



47828. The proximal extremity of the left ulna ; from Australia. 

 This specimen evidently belongs to the same species as the 

 preceding ; it is almost indistinguishable from the ulna of 

 Phascolomys, but has the inner articular facette flat, in- 

 stead of slightly cupped ; it differs widely from the cor- 

 responding bone of Diprotodon, in which the latter surface 

 is very deeply cupped and the olecranal process absent. 



Presented by Dr. George Bennett, 1877. 



48419 a. The right radius ; from Queensland. This bone difters 

 from the radius of Diprotodon and Phalangista by the 

 transverse elongation of the proximal articular cup, and 



