Ill 



1 743. The skull of a full-grown specimen of Macroptu Bennett ii, showing the full 

 of permanent grinding teeth in use. 



These consist of the premolar, f 4, and four true molars, m I 4, the two deciduous teeth 

 baring been shed, and the premolar and last molar baring come into place : the acquisition 

 of the last molar in this and many other small specie* of Kangaroo is not accompanied by the 

 displacement of the premolar, as in the Maeroptu major. 



J/HHtfrian. 



1744. The skull of a young Kangaroo (Macropiu lanioer), prepared to exhibit the 

 teeth. 



The permanent premolars are relatively larger and more simple than in Marropm major : 

 the third superior incisors are smaller, and the first superior incisors larger. The palate is 

 entire. The two deciduous molars and the first true molar are in place : the permanent pre- 

 molar i* exposed M tit*, on the left side of both the upper and the lower jaw. The germ of 

 the hut molar, p 4, is not dereloped. The teeth of the left side, with the exception of the pre- 

 molars, are removed and separately displayed : they are the three incisors, i 1, i 2. i 3, the 

 deciduous molars, d \ and d 2, and the first, m \, second, M 2, and third, 3, true molar* in 

 the upper jaw : the teeth in the lower jaw correspond with those above, except that one huge 

 procumbent incisor is opposed to the three upper incisor*. 



Ifnn(frian. 



1745. The mutilated skull of a small species of Kangaroo (Macropiu Derbianiu). 



It corresponds in dimensions with the skull of the Macropiu Iluttlmamin, but the third 

 incisor of the upper jaw baa its outer surface entire, and is notched only at its hinder border. 

 It exhibits the full dentition of maturity, m. i ^~, f { at jE;- 



Miu. Brookeg. 



1 7 46. The mutilated skull, wanting the lower jaw, of a Kangaroo (Macropiu Parma). 



It corresponds in site and in the small proportion of the middle incisor of the upper jaw 

 with the specie* of Kangaroo called " Parma " by Mr. Gould. It was referred in the former 

 edition of the 'Osteological Catalogue' (p. 77, No. 482), to the Aroe specie* (Maeroptu Bnaui), 

 but differs in the absence of canine* and the smaller siie of the premolars. 



Hunterian. 



1747. The skull of the Red-bellied Kangaroo (Macropiu Billardierii). 



Rudimental canine teeth exist in the upper maxillary bone*. The molar series of 

 here consists of the two deciduous molan (d 3, d 4), and of the first three true molars ( 1, 



2, M 3) : the crown of the premolar is exposed OB the right tide. 



./*. Brvokei. 



