136 



MUFFLE OF DENDROLAGUS 



the latter. Dorcopsis is confined to New Guinea, and contains 

 three species, viz. D. muelleri, D. luctuosa, and D. macleani. 

 D. muelleri has a striking resemblance to Macropus hrunii, with 

 which it has been confounded. Though intermediate between 

 Ifacrojnis and Dendrolagus, these Kangaroos are not arboreal. 



The genus Dendrolagus is remarkable for its un-kangaroo-like 

 habit of living in trees. In aceurdance with this change of 

 habit is a relative shortening of the hind-limbs, a feature which 



Fig. 67. — Tree-Kangaroo. Dendrolagus hennetti. x yV. 



begins to be observable in Dorcopsis. " The general build," writes 

 Mr. Thomas, " is of the ordinary mammalian proportions, not 

 macropodiform at all." The muffle is not naked for the greater 

 part, though the shortness of the hairs gives that effect. As in 

 Dorcoijsis, luit not as in Macro2ncs, the bulla tympani is not 

 swollen. There are altogether five species, the fifth, D. hennetti, 

 having been lately described from specimens living in the Zoo- 

 logical Society's Gardens. 



The anatomy of this genus has been described by Owen for 

 D. inustus} and by myself for D. hennetti. The stomach, which 



1 Proc. Zool. S'oc. 1852, p. 10:3. 



