104 FOSSIL JAWS OF MACROPODID.E, 



Rise and fall oj teeth. 



The permanent premolar has risen to the crowns of its prede- 

 cessors as the fore lobe of m. * has j)ierced the gum, the hind lobe 

 of m.-"^, having then its edge bevelled off l^y wear; but it may be 

 also fully in place and distinctly worn at an earlier period, in 

 which the hind lobe of m."^ is almost untouched by wear. It 

 remains in function at least till the last molar is well worn down. 



Examples — nine. 



Mandibular. — An adolescent right ramus with the first four 

 cheek-teeth — An aged left ramus with base of incisor and the 

 posterior true molars — An adult right ramus with all the true 

 molars, m.^ worn to the base — An adult right ramus with the 

 last three molars in fine preservation — ^An adolescent right ramus 

 with the last two molars well preserved — A right adolescent 

 ramus with the first three true molars and p. * exposed from above 

 in its crypt, and fragments of a right adolescent ramus with the 

 first three cheek-teeth. 



The species is well characterised by the form of its premolar in 

 conjunction with a size superior to that of modern wallabies. 



Halmaturus anak, Owen, VI. Vol. xv. p. 185, 1859 

 Protenuwdon anak, Owen, partim, I, 187-1, p. 275. 

 F. og, Owen, I. 1874, p. 377. 

 P. roichus, Owen, I 1874, p. 281. 

 P. mimas, Owen, I. 1874, p. 278. 

 P. anta^vs, Owen, I. II. p. 448. 

 Sthenuriis atlas, Owen, pxiirtim, \. 1874, p. 265. 

 8. hrehus, Owen, I. 1874, p. 272. 

 Macro^ms minias, Flower, IX. pt. 2, p. 720. 

 M. brehus, Lydekker, IV. p. 207. 



M. roichus, Owen, I. 1874, p. 281; Lydekker, IV- p. 212. 

 M. anak, Lydekker, IV 214. 



