184 



754. A dorsal vertebra of the Mastodon giganteus, with the spinous process 



broken off. 



Locality unrecorded. Hunterian. 



755. The neural arch, and spine, with the summit broken off, of an anterior 



dorsal vertebra of the Mastodon giga?iteus : the spine measures in its 

 present mutilated state twenty-one inches in length. 



From the tertiary deposits of Ohio. Purchased. 



756. The base of the spine of an anterior dorsal vertebra of the Mastodon 

 giganteus. 



From the tertiary deposits of Ohio. Purchased. 



757. A considerable proportion of the os sacrum of the Mastodon giganteus. 



From the tertiary deposits of Ohio. Purchased. 



758. A portion of the anterior extremity of the os sacrum of the Mastodon 

 giganteus. 



From the tertiary deposits of Ohio. Purchased. 



759. A portion of one of the anterior ribs of a large proboscidian Pachyderm, 



probably the Mastodon giganteus. 



From the tertiary deposits of Ohio. Purchased. 



760. A fragment of an anterior rib of, probably, the Mastodon giganteus. 



From the tertiary deposits of Ohio. Purchased. 



761. A portion of one of the anterior ribs of, probably, the Mastodon 

 giganteus. 



From the tertiary deposits of Ohio. Purchased. 



762. The vertebral extremity of the rib of, probably, the Mastodon giganteus : 

 the head of the bone presents two articular surfaces, and there is a third 

 surface upon the tubercle. 



From the tertiary deposits of Ohio. Purchased. 



763. A portion of a rib of a large proboscidian Pachyderm, probably the Mas- 



todon giganteus. ... 



From the tertiary deposits of the Ohio. Purchased. 



