108 Proceedings of ihe Roi/cl Sociefj/ of Victoria. 



Appendix A. 



On the Marsupial Bones of the Coiinaidai Limestone. 



By C. W. De Vis, .ALA. 



Of the twenty-two fossil bones and moulds moi'e or less 

 occupied by bone, collected by Messrs. Officer and Hogg, and by 

 Mr. Ferguson, of the Mines Department, from Alkeuiade's 

 Quarry, Coimaidai, about two-thirds are capable of determination ; 

 they are three lower jaws, seven pieces of long bones, four bones 

 represented by cavities in the matrix, and one metatarsal. With 

 the valuable exception of one jaw, these relics cannot be said 

 to have been fossilized in a manner favourable to identification, 

 and the difficulty of dealing with them is in most cases increased 

 by their imperfect condition prior to burial. AVithout exception 

 they are mammalian and marsupial. They have been contributed 

 by three families of the Marsupialia, the Phascolomyidaj, 

 Macropodida^, and Nototheriidse, and consequently are examples 

 of the Nototherian fauna of Tertiary or Post-Tertiary time. To 

 take them in order, the first to attract notice is a member of the 



PhascoIoinyidiZ. Phascolomys parvus., Ow. 



The validity of this species is confirmed by the fossil under 

 view, the horizontal ramus of a right mandible in a fine state of 

 preservation, the teeth (save for the absence of the crown of the 

 incisor) being in perfect condition. Apart from its rarity the 

 mandible has a strong claim on our interest, as it unmistakeably 

 correlates the Victorian beds with the drifts of Southern 

 Queensland, and by showing how extensive was the range of this 

 little Wombat, prepares us to expect similar diftusiveness in other 

 Marsupials contemporary with it. 



Macropodidce. Halinaturiis dryas, milii. 



Mandibles. A horizontal ramus of an adult left mandible. Of 

 the premolar the fangs in their sockets are all the remains ; the 

 crowns of M' and M^ are much corroded ; the anterior talon in M* 



