104 MASTODON AND ELEPHANT. 



the pelvis is the same. That of the pubis and ischium is oblique, forming 

 an angle of 45°. Compared with the large skeleton, the bones of the pelvis 

 are less massive, and the apertures of the pelvis proportionally larger. In 

 the skeleton of the Elephant, which is larger than this Mastodon, the 

 pelvic aperture is decidedly smaller; and the transverse dimension of 

 the pelvis, from one spinous process of the ilium to the other, is forty-three 

 inches, not so great by fifteen inches, although the skeleton of the Elephant 

 is, in every other respect, larger. 



The result of these measurements of the pelvis leads to the conclusion, 

 that our skeletons of the Elephant and Mastodon are males, and that of 

 Cambridge is a female. 



TAIL. 



The vertebrae of the tail are, in the Mastodon, in number twenty-two ; 

 but some of them appear to be the bones of another individual, and 

 therefore cannot be considered as affording accurate notions of these 

 bones. Those of the Elephant are twenty-four ; but the number probably 

 varies in different animals. 



EXTREMITIES. 



Anterior Extremity. Scapula. — The direction of this bone is nearly 

 vertical. The external face is divided by the spine into an anterior third 

 and posterior two-thirds. The direction of the spine is oblique from above 

 downwards, and from before backwards. The inferior extremity is divided 

 into two processes, an anterior and a posterior; both of them sharp and 

 pointed, compared with those of the large skeleton. The internal face is 

 divided, like the external, into an anterior and posterior fossa, by a rounded 

 internal ridge. 



