] PEOF. OWEN ON AN EXTINCT KANGAROO. 



DESCRIPTION OF THE PLATE. 



PLATE II. 



Palarchestes crassus. 



Fig. 1. Outer side-view of the right mandibular ramus. 



Fig. 2. Inner side-view of the same. 



Fig. 3. Section of the symphysis of the same. 



Fig. 4. Grinding-surface of the third hind molars 



All the figures are of the natural size, 



