On a Collection of Mammals from Central and Nortliern Queensland. 935 



than the foremost cusp of m i ), and thus is the most proiiiiuent point 

 in the lower jaw. The hinder cusp is low (in ^2 almost iniperceptiblej. 

 In the young individual (A), the premolars alone are fully deve- 

 lopcd ; of the other teeth several are not fully grown. 



Fam. Phascolarctidae. 

 50. Fhascolarctos cinereus (Goldf.) 1819. 



Lipiinis cinereus Goldp. iu: Isis 1819, p. 271 (1819. 

 Phascolarclos cinereus Fischee, Synops. Mamm. p. 285 (1829). 



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



B. Coomooboolaroo, Jan. 1884 (skull). 



C. Female. Coomooboolaroo, Jan. 1884 (skin with skull). 



D. Feniale. Coomooboolaroo, Jan. 1884 (skin with skull). 



E. Coomooboolaroo, Jan. 1884 (skull). 



F. Rockhamptou, July 1883 (skin with skull). 



Is still numerous in Central Queensland, but was not found at 

 Herbert River in N. Queensland, and appeared to be entirely absent 

 from that district. 



One of the skins sent home was that of a scarcely half grown 

 young one , in colour exactly resembling the mature specimens. Of 

 the latter, one (D) differed slightly from the others, in the streng red- 

 dish brown mixture on the back. 



The skull. 

 B. Length of skull 110 mm, breadth 64 mm, Length of lower jaw 83 mm 

 v^"' 5> 1t 11 -1-10 „ ,, by „ „ „ „ „ yu „ 

 !-'• 11 » 11 ^"^ 11 11 o4 „■ „ „ „ „ oJ „ 



^' H 11 11 ^^"^ 51 V '1 11 11 H 11 11 "' 11 



F. ,1 ,1 11 132 „ „ 71 „ „ „ „ „ 100 „ 



Notwithstanding the not inconsiderable difierence in size, all the 

 above mentioned skulls belonged to fullgrown individuals, and the 

 teeth are not more worn in the largest, than in the smallest specimen; 

 (C has the most worn teeth). The difference in size appears to be in- 

 dividual, and not dependent on the sex; the largest specimen (F), 

 appears to be a female, as well as two of the smaller ones. 



In the formation of the skull, also several slight differences are 

 observable i» the specimens. In B, C and D, the frontal crests ex- 

 tend backwards without meeting; at the back they follow the outer 

 margin of the interparietale, until they join the occipital crest. In E, 

 the frontal crests on the contrary are almost imperceptible, whilst a 



