BY C. W. DE VIS. 
89 
Key to the species. 
Longitudinal links of molars elevated, with lateral 
processes. 
Cheek-teeth from 82-5 upwards; hinder surface of 
molars with few but strong vertical folds goliah 
Cheek-teeth from 76 -0 downwards; hinder surface 
of molars with numerous fine vertical ridges otuel 
Longitudinal links of molars nearly or quite obsolete. 
Length of first three cheek-teeth 55*0; links rudi- 
mentary; incumbent folds strong and numerous pale* 
Length of first three cheek-teeth from 42-0 down- 
wards; links feeble; incumbent folds feeble. 
Incisor elevated, compressed; symphysis anchy- 
losed; mandible thick orcas 
Incisior procumbent, spatulate; symphysis 
lax; mandible slender atlas 
Sthenurus goliah, Owen. 
Procoptodon goliah, Ow.; Owen, XXIII. p. 59; Lydekker, IV. 
p. 234. 
P. rapha, Ow.; Owen, I. 1874, p. 788; Lydekker, IV. p. 234; 
Etheridge, V. p. 190. 
P. pusio, Ow., partim; Owen, I. 1874, p. 788; Etheridge, V. p. 
190. 
P. goliath, Etheridge, V. p. 190. 
Macropus goliah, Owen, XXIIL p. 259. 
M. rapha, Flower, IX. part ii. p. 721. 
Molars with thick lobes, rounded angles, subrectilinear crests 
and (except as to the upper talons) elevated links. Inner aspect 
of links and lobes with strong folds, the largest and most constant 
