BY C. W. DE VIS. 81 



Palorchestes, Owen. 



Palorchestes, Owen, I."^ 1874, p. 797. 



Molars with talons anteriorly and posteriorly; the anterior of 

 the ujDper and the posterior of the lower the longer; mid valleys 

 of the up23er closed on the inner, or on both sides, by a raised 

 basal rim. Lower molars elongate; their links continuous with 

 the outer angles of the lobes. Anterior upper molars with vertical 

 ridges and folds. Upper premolar triangular, nearly equilateral, 

 transversely bicuspid, with a talon fore and aft; lower oblong, 

 unicuspid, with a long posterior talon which is strongly linked to 

 the lobe. Vascular foramen present in the mandible. Lower 

 incisors procumbent, spatulate. Middle pair of upper incisiors 

 smallest. 



Key to the sj^ecies. 



Size larger; cheek-teeth over llO'O in length, 

 anterior talon of p^ short; lobe of p* indented 

 intero-posteriorly azael 



Size smaller, cheek-teeth below 100*0 in lenjrth, 

 anterior talon of p"* produced; lobe of p*^ exca- 

 vated intero-posteriorly • parvus 



Palorchestes azael, Owen. 



P. azael, Owen, I. 1874, p. 798; Lydekker, IV. p. 237; 

 Etheridge, V. p. 186. 



P. crassus, Owen, VIII. Vol. xi. p. 7, 1880. 



Anterior talon of upper premolar in the half w^orn state indis- 

 tinct. The lobe of the lower premolar indented on the posterior 

 surface near the inner side of the link; its area of abrasion sul)- 

 quadrate, extended longitudinalh\ Size large. 



* Niunbers hke this after authors' names refer to the bibliographical hst 

 at the end of the paper. 

 F 



