22 



RECOKDS OF THE AUSTRALIAN MUSEUM. 



and internal to the noi'raal foranieLi. This accessory forameu 

 is not visible in the direct facial view. The vertical diameter 

 of the OS planum is 11 mm. The orbital index is 71.7. The 

 orbits appear square-shaped. The inter-orbital width is 

 18 mm. 



Xonnahasilariii. — (PI. xi.,fig 1.) The hard palate index is 107. 

 There are traces of the maxillo-premaxillary sutures — more 

 marked than in the former skull. The anterior palatine fossae 

 are elongated and narrow. The fossse between the pterygoid 

 plates are very deep. On both sides the vaginal process is 

 free. The posterior condj-lar fossa on the right side is deep and 

 contains a fairly large foramen. There is no fossa on the left 

 side ; but there are two small foramina behind the condyle. 

 The pharyngeal tubercle is not marked. The basi-occipital 

 and basi-sphenoid are firmly united. There is a foramen 

 pterygo-spiuosum, the foramen in the external pterygoid 

 plate being 7 mm. in diameter. The middle of the arch of 

 bone bounding the foramen shows the remains of a suture 

 between the two elements. The tympanic bones are small 

 and incomplete. 



Teeth. — The dental arch in this skull is much more elon- 

 gated than in the other. The series of teeth is uninterrupted 

 and regular. There are seven teeth present in the upper jaw. 

 The first right bicuspid is but slightly worn. The first molars 

 are considerably worn ; the second molars only slightly. The 

 right wisdom has come nearly into position ; it looks 

 downwards and outwards. The left wisdom is erupting ; it 

 looks downwards, much outwards, and slightly forwards. The 

 measurements of the teeth, in millimeters, are as follows: — 



