148 HAKStJPIALIA. 



A. Latifront Group. 



In the existing species the fronto-nasal suture is straight ; the 

 nasals are narrow ; the enamelled surface of the upper incisors is 

 directed anteriorly ; the inferior border of the mandible is highly 

 convex ; the masseteric fossa is shallow ; and pm. 4 has a quadran- 

 gular cross-section. 



Phascolomys magnus, Owen \ 



The species is considerably smaller than PJiascolonus gigas, and is 

 mainly known by portions of the cranium, the complete mandible 

 being unrepresented in the collection. The disposition of the upper 

 cheek-teeth and palate is after the type of P. latifrons ; but the 

 transverse concavity of the palate, which is most marked at the 

 diastemal region, is much greater. The length of the upper series of 

 cheek-teeth in the type specimen is 0,086. 



Hah. Queensland and New South Wales. 



39989. The palatal region of the cranium, showing all the cheek- 

 (Fig.) teeth ; from the Pleistocene of Gowrie, Drayton, Queens- 

 land. This specimen is the type, and is figured by Owen 

 in the ' Phil. Trans.' 1872, pi. xxxv. figs. 1-5, and also in 

 pi. xl. figs. 1-5 of the ' Extinct Mammals of Australia.' 



Presented hy Sir D. Cooper^ Bart., 1866. 



38607. Portion of the right maxilla, showing the last three true 

 molars ; from the Pleistocene of Eton Vale, Darling 

 Downs, Queensland. Described by Owen in the ' Phil. 

 Trans.' 1872, p. 248. 



Presented hy Sir D. Cooper, Bart., 1864. 



42613. Two upper true molars, one imperfect ; from a cavern in 



(Fig.) the Wellington Yalley, New South Wales. Eigured by 



Owen in the ' Phil. Trans.' for 1872, pi. xxxv. fig. 6, and 



in the ' Extinct Mammals of Australia,' pi. Ix. fig. 6. 



Presented hy the Trustees of the Australian Museum, 1870. 



47850. A small fragment of the left ramus of the mandible, con- 

 taining one of the true molars ; from Darling Downs. 

 The tooth of this specimen, which is provisionally referred 

 to the present species, is smaller than ^71 of PJiascolonus 

 gigas. Presented hy Dr. George Bennett, 1875. 



^ Phil. Trans. 1872, p. 246. 



