On a Collection of Mammals from Central and Northern Queensland 379 



Of the caoines, nothing is to be seen except the rudimentary sockets, 

 as in the old ones. 



Of the premolars, jp ^ as well as the milk premolar is fully de- 

 veloped, and in use. p^ resembles somewhat a molar, is, however, 

 smaller and has round tubercles. The milk-premolar is quite like a 

 molar; and by removal of part of the outer alveolar wall on the one 

 side, the germ of ^ ^ jg geen lying over the space between p ^ and the 

 milk premolar. 



Of the molars the point of m ^ is just visible beyond the margin 

 of the jaw, but no traces are seen of the others. 



In the lower jaw the incisor has a leiigth beyond the alveolar 

 margin of 15 mm, and has in its unworn conditiou slight indications 

 of being crenulated in its margin. 



The premolar (p^) has more the character of a premolar, than 

 in the upper jaw, as its anterior portion is narrow and has a cutting 

 edge, the back portion broader with two tubercles. The milk premo- 

 lar is somewhat narrower than in the upper jaw; the germ of ^ ^ also 

 here lies hidden under its root. The molars are developed as in the 

 Upper jaw. 



30. Halmaturus robustus (Gould) 1840. 



Macropns {Petiogaie) robustus Gould, in: Proc. Zool. Soc. Lond. 1840, p. 92 



(1840). 

 Macropus {Halmaturus) robustus Watekh., Nat. Hist. Mamm., vol. I, p. 100 



(1846). 



A. Female. Coomooboolaroo, Febr. 1884 (skin with skull). 



B. Male. Coomooboolaroo, Febr. 1884 (skin with skull). 



C. Male. Coomooboolaroo, Febr. 1884 (skin with skull). 



• Found only in the rocky districts, but never on the plains; in 

 Central Queensland it is numerous in some places. 



Although the largest male specimen, brought home by Dr. L., 

 from the end of the snout to the root of the tail (measurement taken 

 from the mounted specimen) had a length of about 1200 mm, it was 

 apparently not fullgrown, the innermost molar having as yet not attained 

 its füll development. Both the others are young, and their innermost 

 molar has as yet not risen above the level of the socket. 



The dark colour of the male is very characteristic. In C, almost 

 the whole body is of a slaty black, with a reddish hue on the neck and 

 the upper part of the back; the other parts have greyish white iuter- 

 mingled hair. The lower surface of the body is somewhat lighter, 



Zoolog. Jahrb. II. 5 g 



