A NEW FOSSIL PACHYDERM. 267 



the form of the root of the canine. The internal surface of the 

 bone is also concealed by cement. 



Bones of the Trunk. 



A dorsal vertebra is represented in figs. 14-16. The body is 

 very much compressed inferiorly, with a sharp prominent middle 

 ridge ; the anterior surface is concave, the posterior convex ; the 

 peculiarities of the bone are better expressed in the figure than 

 they can be by any description. 



A lumbar vertebra (figs. 17, 18) has the body still more concave 

 on the sides, and still more compressed inferiorly, the elevated line 

 rising quite suddenly, and being very prominent (p), the posterior 

 face is concave, and looks a little upwards ; on the side of the 

 body, at the posterior part, is (a) an obtusely elevated line, running 

 obliquely upwards ; anterior to this is a small tubercle (6) ; about 

 the middle, and at the base of the medial ridge, is (c) a small fora- 

 men ; and a small but deep fossa (d) is found close to the base of 

 the transverse process. 



Os innominatum has the ilium inferiorly naiTow and compressed ; 

 above the acetabulum, but near its margin, are two fossae, which 

 extend upwards and shortly vanish ; the posterior of these is nar- 

 rowed about its middle by an elevation proceeding from its posterior 

 lip. The external surface of the ischium below the acetabulum 

 is free from elevations, and seems to be scarcely concave ; the pos- 

 terior edge is thin and compressed. The bone is so imperfect, that 

 a figute would be of little value. 



■&"- 



Bones of the Extremities. 



The humerus (figs. 19, 20, bone of the right side), of which the 

 lower part is preserved, is pierced by a large foramen. The lower 



