On a CoUection of Maminals from Central and Northern Queensland. 8Ö3 



The Frontalia have quitc low and roundcd crests, and are 

 comparatively broader behind (like the parietalia) than in the older 

 spccimen. 



The interraaxillaria, the upper parts of which in the mature female 

 are thin, so that the surface is partly perforated at the sides, are more 

 solid in the young, and the surface in all parts is entire. Naturally 

 in the young the intermaxillary is considerably shorter in proportion, 

 than in the other, and this likewise applies to the lower jaw. 



At the back of the tooth bearing part, the upper jaw is not 

 completely ossified in the young, but a round opening is present on 

 the outside. 



The teeth. The dentition is: 



In the young: »i, w| (16). 



In the fullgrown female: i|, m| (10). 



In the young the upper teeth are as follows: 



In the intermaxillaries the two incisors which are slightly pro- 

 truding beyond the alveolar margin , are pointed and not worn. Be- 

 hind each of these is seen an open socket of the same size as the 

 functional teeths, but without a true tooth ; this socket continues back- 

 wards up in the jaw to the perforated portion on the outside of the 

 intermaxillary. 



The molars are 3 in number. The whole crown of the first is 

 worn flat ; m ^ has the surface worn on the anterior half of the tooth, 

 but is less worn on the posterior one. m ^ is just rising above the 

 alveolar margin, and has pointed tubercles. All are about the same 

 size ; the first is the smallest. In shape they are pretty much alike. 

 Each of them is contractedin the centre, by which a anterior and 

 posterior portion is formed: the front portion is the broadest, and 

 has traces of being divided into two protuberances. 



The lower jaw has on each side of the Symphysis 4 sockets, of 

 which the two central ones are closer together than the others. Of 

 the theeth only i ^ is present, the other sockets are empty ; but only 

 those of i 2 are filled up with bony tissue (the other teeth have 

 probably been lost in the preparation of the specimen). 



The lower molars are three, on each side, of the same construction as 

 those of the upper jaw. m ^ is the smallest, and considerably narrower, 

 than the corresponding one in the upper jaw. They are worn on their 

 back halves, but the front ones are intact. m ^ is worn on both halves, 



