334 



1540'. The right superior incisor of the existing Wombat of Van Diemen's 

 Land (Phascolomys Vombalus). Purchased. 



1541. A superior molar tooth of the Phascolomys Mitchelli. 



From one of the caves in Wellington Valley, Australia. 



Presented by Lieut. -Col. Sir T. L. Mitchell, C.B. 



1541'. A corresponding superior molar tooth of the Phascolomys Vombatus. 



Purchased. 



1542. A fragment of the lower jaw, with a molar tooth in situ, of the Phasco- 



lomys Mitchelli 



From one of the caves in Wellington Valley, Australia. 



Presented by Count Strzelecki. 



Genus Dasyurus. 



1543. A portion of the right superior maxillary bone of the great carnivorous 



Opossum (Dasyurus laniarius, Owen), with the two premolars and the 

 first and second true molars in situ. These four teeth occupy an extent 

 of one inch and a half ; the corresponding teeth in the Dasyurus ursinus 

 occupy an extent of one inch and a quarter : this, which is the largest 

 known existing species of Dasyure, is at the present day confined to the 

 island of Van Diemen. 



From one of the caves in Wellington Valley, Australia. 



Presented by Count Strzelecki. 



1544. A fragment of the right ramus of the lower jaw, with the last molar tooth, 



of the Dasyurus laniarius : the antero-posterior diameter of the crown is 

 seven lines and a half, that of the corresponding tooth in a full-grown 

 Dasyurus ursinus being five lines. 



From one of the caves in Wellington Valley, Australia. 



Presented by Count Strzelecki. 



1545. The antepenultimate or penultimate molar of the right side, lower jaw, of 



the Dasyurus laniarius. 



From one of the bone-caves in Wellington Valley, Australia. 



Presented by Count Strzelecki. 



