132 



in. lin. 



Vertical diameter, or depth of the mandible, at and including the fore part 



of the carnassial tooth 3 



Other admeasurements are noted in the text. 



PLATE XVI. 



Side view of the cranium of the Thylacoleo carnifex : nat. size. 



PLATE XVII. 

 Base view of the skull of the Thylacoleo carnifex : nat. size. 



* 



PLATE XVIII. 



Fig. 1 . Front view of the skull of the Thylacoleo carnifex. 

 Fig. 2. Back view of the same skull. 

 Fig. 3. Upper view of the same skull. 



Fig. 4. Air-cells of the diploe above the cavity for the brain. 



Fig. 5. Outer side of part of the right mandibular ramus, with the carnassial (p *) and 



first molar (m i) ; the second molar, m 2, is indicated in outline. 

 Fig. 6. Inner side of the same portion of mandible : the second molar (m 2) and the 



incisive tusk, with the first molar, m 1, carnassial, p 4, and incisive tusk, i 1, of 



the upper jaw, are indicated in outline. 



All the figures in this Plate are half the natural size. 



The letters and figures of each Plate are explained in the text. 



♦ 



