1857.] 



FALCON ER — PLAGI AULAX. 



279 



Figs. 7, 8, 9, & 10. — Plagiaulax Becklesii. Portion of the right 

 ramus of a lower jaw, and different views of the two true molars. 



(Fig. 7. A portion of the jaw, with two molars in situ, magnified 10 diameters ; 

 fig. 8, inner side of the molars, magnified 10 diameters ; fig. 9, outer side, 7 dia- 

 meters ; fig. 10, summits of the crowns of the molars, 7 diameters.) 



Fig. 7. a. Anterior margin of the coronoid process. 

 b. Fractured posterior margin. 

 pm. Impression of the last premolar, 

 m\. First true molar. 

 m2. Second true molar. 



8. 



a. Anterior inner point of penultimate molar. 



b. Posterior inner point of the same molar, showing the disc of wear. 



c. Anterior outer point. 



d. Posterior outer edge. 

 e e. Fractured surface of interior edge of the last molar. 



^ff. Ground surface of outer edge of the same. 



VOL. XIII. PART I. X 



Figs. 8, 9, & 10. ^ 



