922 ROBERT COLLETT, 



dish grey (like the siirroundings of the vent and the outer side of 

 the foot); its outer portions are of a dirty greyish white. 



The ears are comparatively large, their length, measured along 

 the inner margin, is 26 mm, their greatest breadth 20 mm. 



The tail is thick at the root, and covered with long hairs; but 

 on the outer two thirds the hairs are short and closely adpressed. 

 Only the extreme tip is naked underneath. 



The skull. The length of the skull is 55mm, breadth 33mm. 

 The nasalia are comparatively broad in front; their suture with the 

 frontalia forms no angle, but approaches a straight line (exactly as 

 in the specimen from S. Australia). 



The frontal crests do'' not (in this specimen) meet, but diverge 

 somewhat on the parietalia. The palatine bones are thin and some- 

 what perforated , but the foramina are not yet regulär or of equal 

 size, as is the case in the fullgrown specimen from S. Australia. The 

 foramina incisiva are long. 



The bullae osseae are large, their form about the same as in 

 Petaurista volans; likewise the external ear openings are wide. 



The intermaxillaria are unusually lengthened above, and elongated 

 backwards to a long point, which terrainates quite near the frontalia, 

 or at a distance from these which is less than the front breadth of 

 each nasale. 



The teeth. The dentition : i h (^ h P h ^ i (38). 



In the Upper jaw the two outer incisors are about equal in size; 

 the edge of i 2 is distinctly notched, The canine and p 1 are both 

 separated from each other and from the other teeth by a space, 

 about equal to the size of a tooth. The canine is small, slightly 

 larger than p 1 , which is the least of all the teeth. 



In the lower jaw, the canine is present on both sides, but very 

 small ; j? 1 is also present, but is quite rudimentary. 



The skull of the specimen from Gawler, S. Australia, which has 

 a length of about 59 mm, a breadth of 34 mm, agrees in almost every 

 detail with the N. Queensland specimen. Only the frontal crests (in 

 this mature specimen) join to a sagittal crest, a circumstance of but 

 little weight (cfr. p. 49). Foramina palatina, very wide, also foram. 

 incisiva. Neither in the structure of the teeth is there any difference, 

 setting aside the chauce circumstance that c and p 1 are wanting in 

 both lower jaw; but the socket of the latter is still perceptible. 



