374 Mr. Clift on the Fossil Remains of two New Species of Mastodon, 



molar tooth from the upper jaw : and there are also portions of the lower jaw 

 containing molares, which seem to approach nearer to the rhinoceros of Java 

 than to those of any other recent species*. 



Tapir. — A fragment of the lower jaw^ consisting of the symphysis, is the 

 only remnant which can be safely attributed to this genus f . 



RUMINANTIA. 



The only fragments of ruminating animals in the collection, which can, in 

 my opinion, be safely identified, are the portion of a lower jaw, and two or 

 three separate molar teeth. They apparently belonged to an ox of ordinary 

 size. There are other fragments, which are not sufficiently large and definite 

 to warrant me in pronouncing upon the genera to Avhich they belonged. 

 There are teeth, fragments of cylindrical bones, and the bony cores of horns. 

 The former may have appertained to a species of deer, and the latter have 

 certainly the form of those of antelopes J. 



Class REP TIL I A. 

 CHELONIA. 



Trionyx. — Both in the old and new world we have living specimens of this 

 genus. In the rivers of South Carolina, Georgia, Florida, and Guiana, the 

 Trionyx ferox lies in wait for birds and reptiles. It is called in some of the 

 places where it abounds, the Duck-killer, from the ravages which it makes 

 among those birds ; while in others it is named the Alligator-turtle, from its 

 predacious habits. 



In Egypt, the Trionyx jEgyptiacus, which is about three feet in length, 

 destroys multitudes of the brood of the crocodile at the moment of their birth. 



But the largest recent species is said to be the Trionyx Javanicus. Indi- 

 viduals of a very large species, supposed to weigh between two and three 

 hundred pounds, are said to have been seen in the Jumna and the Ganges. 



No fossil trionyx has yet, it is believed, been found in North America ; but 

 the remains of a fossil species occur in abundance in the Hastings-sand and 

 other localities in England, and in the Paris basin ; and some are said to have 

 been found in the diluvium of the South of France, accompanied by the 

 remains of large tapirs. Fragments of trionyx in a fossil state are also found 

 in other parts of Asia besides Ava. 



The specimens from Ava leave no doubt as to the genus, but are not suffi- 



* See Plate XL. fig. 1.2; and PI. XLl. fig. 16. 17. 18. 26, for other bones of this animal. 



t See Plate XXXIX. fig. 5. and 6*. 



X See Plate XL. fig. 6. 7. 8 j and Plate XLL fig. 27. to 33, and 21. to 25. 



