On a Collection of Mammals from Central and Northern Queensland. 909 



is directed alniost struiglit out, and is not bcnt downwards, as in Pe- 

 taurista. 



The under surface of the scai)ula is, as in most of thc Marsu- 

 pials, furnislicd witli a faint groovc just under the Spina, and is 

 besides, on both sides of this groove, slightly convex. 



The i)elvis is on the whole constructed in accordauce with the 

 pelvis in the Hypsiprymni, but in several i)oints it is characteristic. 



Thus the ossa ilii are proportionally longer; likewise the length 

 of the pelvis, measured from the upper end to the ui)per margin of 

 the acetabulum, is considerably longer than the distance from the last 

 named point to the hiuder niargin of the os ischii (in Aejpyprymnus 

 the reverse is the case). 



The ossa ilii are above, as in most of the Marsui)ials, bentsomewhat 

 outwards. The spina, which runs up its outer surface from the aceta- 

 bulum, is quite sharp beneath and i)rominent, but above the middle it 

 becomes almost entirely obliterated, although it can be traced right 

 up to the upi)er end of the ilium. A well defined i)rocess is visible 

 on the back of the pelvis at the point, where it is ankylosed with the 

 proc. trausversi of the 2"*^ sacral vertebra. On the anterior side a 

 shnilar sharp process is present, where os ilii and os pubis meet. 



The ossa ischii have, as in Äepyprymnus, their hinder angle com- 

 paratively beut outwards; while the very marked process, which in 

 the Said si)ecics arises from the lower end of the Symphysis jmbis, 

 is but slightly developed in Hypsiprymnodon, although it is visible. 

 Furthermore it can be noticed, that the lower margin of the os ischii 

 forms a rather straight line, with a somewhat rounded corner at the 

 hinder tuberosity, whilst in Äepyprymnus it forms a clear angle, 



The foramcn obturatorium is of normal construction. 



The vertebrae lumbales, of which G are present, do not appear 

 in any essential feature to differ from, what is found in a skeleton 

 of Äepyprymnus. On the last vertebra, the proc. transversi extend 

 evenly pointed, without ending in a transverse margin. 



All the proc. spinosi are siender, but evenly thick, and not transparent. 

 The OS sacrum is fornied of 3 vertebrae, as the 1" tail vertebra has 

 ankylosed with the 2 sacral vertebrae. Both the true sacral vertebrae 

 touch the ilium ; the 1'^ is large and broad, and, seen from the front, 

 rather like the corresponding one in Äepyprymnus; but unlike this, 

 it is furnished with a strong proc. spinosus, which is nearly as 

 long, as that of the last lumbar vertebra, and directed slightly down- 

 wards. 



