On a Collection of Mammals from Central and Northern Queensland. 905 



protracted below, and the limits of tlie narial aperture are oblique. 

 The suture with the upper jaw forms an eveu arch (convex in front), 

 and joins the nasal suture considerably before the centre. As the 

 intennaxillary is comparatively narrow, the maxillary is therefore longer 

 than in B. lumhoUzi ; the snout and the narial aperture in B. ursinus 

 are, however, on the whole narrower, than in the other species. 



The occiput is higher in comparison to its breadth, than in B. 

 lumholtsi^ as the parietalia are more arched. Its hight, measured 

 from the lower margin of the foramen magnum to the highest point 

 of the OS occipitale , is in one specimen of B. ursinus 29^ mm, in a 

 but slightly larger skull of B. lumhoUzi 25 mm. 



The teeth are, on the whole, stronger, than in B. lumhoUzi; of 

 the incisors, i^ and i^ are almost as broad and long as i^, and 

 distinctly gTooved, 



B. inustus. The nasalia are barely contracted in the middle, but 

 almost equally broad anteriorly ; the suture with the frontalia forms a 

 long angle (open in front). 



The frontalia are not i n f 1 a t e d in the middle, and rise but in- 

 considerably above the almost imperceptible postorbital process. 



The forehead is broad, somewhat broader anteriorly than in B. 

 ursinus, but not so much, as in D. lumhoUzi. 



The palate is not entirely devoid of foramina. 



The intermaxillary is very narrow, above considerably 

 narrower than below. The suture with the maxillary is almost 

 vertical, and joins the nasal suture at about its foremost end^). The 

 Upper jaw is therefore considerably longer above, than in B. lumhoUzi. 



The teeth appear to be stronger, than in D. lumhoUzi, and of 

 the incisors, i 2 and i 3 are very broad, almost equal to i^. 



Concerning the other parts of the skeleton, if Müller's drawings 

 are correct, the sole of the foot appears to be slightly longer in the 

 two species from New Guinea, than in B. lumhoUzi. The difference 

 is, however, almost imperceptible. 



38. JBettongia penicillata Gray 1837, 



Bettongia penicillata Gbaj, in: Chablesw. Mag. Nat. Hist. (new ser.), 

 vol. I, p. 584 (1837). 



A. Coomooboolaroo, 16. Jan. 1884 (skin with skull). 



1) Müllek's 2 drawings of the skull (pl. 23, fig. 4 and 5) do not 

 quite agree in this respect. In the profile figure the intermaxillary is consi- 

 derably narrower above, than in the other figure of the skull, seen from above. 



