MAMMALIA PACK YDERMATA. 
61 
Horses originate ; and, in the year 1815, some squadrons of Bavarian 
hussars were mounted with them. In the E. hippagrus, which rests 
on the fabulous Koomrah of the North African mountains, the author’s 
lively imagination leads him to believe, that he recognises Oppian’s 
Hippagrus. The Asinus equuleus, identified with the Yo-to-tse of the 
Chinese, is defined from a single individual, which, in all its particu- 
lars, was nothing more than a Hybrid or Mule, between the Horse 
and Ass. The A. hamar rests merely upon an incorrect drawing of 
the Kulan by Ker Porter. Hippotigris antiquorum, or the Zebra 
of Congo, is distinguished from that of the Cape on insutficient infor- 
mation. H. isahellinus is founded upon a stuffed specimen, whose 
habitat is unknown, but it may be only a variety in colour of the 
Quagga. We see from this, that the slightest marks are sufficient^ for 
the creation of new species. The monograph of the reporter on the 
Horse is, naturally to the author as an Englishman, totally unknown. 
PACHYDERMATA. 
Count Keyserling has described an under molar tooth of 
Elasmothermm, which was found in the Kirguisian Steppes, 
in the neighbourhood of the Caspian Sea. According to his 
and Brandt’s opinion, this genus forms a link between the 
Rhinoceros and Elephant. 
Fischer of Waldheim founds upon this tooth a new species, 
E. Keyserlingi. (Bullet, de Moscow, 1842, p. 254, tab. 3.) 
Goddard has announced, after an examination of the Missu- 
rium Kochii, that it is a Mastodon. (Proceed, of the Acad, 
of Nat. Sc. of Philad. Oct. 1841, p. 115.) 
In digging canals in Louisiana, an under jaw was found at the depth 
of forty-five feet, which, however, was so rotten, that it crumbled to 
pieces, and only one tooth was preserved. Professor Carpenter holds it 
for the fifth tooth of a Tapir, which it evidently is from the description, 
though not from the plate, in which the artist, through exaggeration of 
the perspective, has quite disfigured the original. (Sillim. Amer. Journ. 
xlii. p. 390.) 
Owen’s description of some fossil remains of Choeropotamus, Palaeo- 
theriwm, Anoplotherium, and Dichohune, from the eocene formation. 
Isle of Wight (Transact, of the Geol. Soc. vi. p. 41), gives some expla- 
nation of the alliance of Choeropotamus with the Peccaris. He also 
describes a new species of Dichohime, D. cervinmn. 
105 
