OBSERVATIONS ON THE DENTITION OF CHRYSOCHLORIS. 180 



EXPLANATION OF PLATE 11, 



Illustrating Dr. R. Broom's paper, " Some Observations on 

 the Dentition of ChrysocliLDris, and on the Trituber- 

 cular Theory." 



Fig. 1. — Riglit upper teeth of Chrysoc hi oris villosa. X 7. The 

 tliree molars are so worn down that the paracone is completely oIjU- 

 terated. The anterior teeth are Init slightly worn. 



Fig. 2. — Left lower teeth of Chrysochloris villosa. x 7. 



Fig. 3. — Upper deciduous teeth of C. villosa, x 7. in an unworn 

 condition. 



Fig. -i. — Lower deciduous teeth of C. villosa. x 7. viewed from 

 within. 



Fig. 5. — Lower molar of Amphitherium. 



Fig. 6. — Lower molar of Deltatherium. 



Fig. 7. — Last two upper molars of Perameles nasuta. x 'y'l. 



Fig. 8. —Last two upper molars of Dasyurus viverrinus. x 5"2. 



Fig. 9. —Diagram of molars of Triconodont type. 



Fig. 10. — Diagram of molars of type where internal ledge of upper 

 meets talonid of lower. 



Fig. 11. — -Diagram of typical primitive carnivorous type of molars. 



Fig. 12.— Diagram of last molars of Dasyurus. 



Fig. 13. ^Diagram of molars of Chrysochloris. 



