XIX.] 



MARSUPIALIA. 



357 



above, and flattened on the under surface. The whole foot 

 is much compressed laterally, especially at its hinder part, 

 so that the proximal ends of the second and third are thrown 

 behind that of the great fourth metatarsal, and entirely 

 concealed in a view of the dorsal surface of the foot. 



The Tree-Kangaroos of New Guinea (Dendrolagus), 

 which habitually live among the boughs of large trees, have 



a 



FIG. no. Bones of right pes of Kan- FIG. 131. Bones of right foot of Pha- 

 garoo (Macro pus bennettii), \. langer (Phalangista I'ulpina), |. 



the feet constructed on the same type, but shorter, and more 

 laterally extended. Hypsiprymnodon moschatus, a species 

 of Rat Kangaroo, lately discovered by Ramsay in North- 

 east Australia, differs from all other members of the family 

 Macropida in the possession of a small prehensile hallux. 



