© _ 
FOSSIL ASS, OR ZEBRA. 397 
Mammoth’s remains, he has called the ‘‘ Elephant Bed,” 
on the Brighton cliffs, ‘are referable to a small species, 
about the size of a Shetland Pony.”* If we admit the 
subgeneric separation of those species of the genus Lywus, 
Cuy., that have callosities on the fore-legs only, the tail 
furnished with a terminal brush of long hair, and a longi- 
tudinal dorsal line, the last-indicated fossil species may 
be named Asinus fossilis. 
Several bones of a large Ass have been found with 
remains of the Beaver and the Wild Boar in the marl 
beneath the peat-formation at Newbury, Berks. 
In reviewing the general position and distribution of 
the fossil remains of the genus Hguus, we find that this 
very remarkable and most useful form of Pachyderm 
made its first appearance with the Rhineceros during the 
miocene tertiary periods of geology. 
From the peculiar and well-marked specific distinction 
of the primogenial or slender-legged Horses (/ippothe- 
rium), which ranged from central Europe to the then 
rising chain of the Himalayan mountains, it is most pro- 
bable that they would have been as little available for the 
service of civilized man as is the Zebra or the Wild 
Ass (guus hemionus) of the present day; and we can 
as little infer the docility of the later or pliocene species, 
Equus plicidens and Hquus fossilis, the only ones hitherto 
detected in Britain, from any characters deducible from 
their known fossil remains. 
There are many specimens, however, that cannot be 
satisfactorily distinguished from the corresponding parts 
of the existing species, Equus caballus, which, with the 
Wild Ass, may be the sole existing survivors of the nume- 
rous representatives of the genus Hguus in the Kuropeo- 
* © Medals of Creaton,’ 1644, vol. 1. p. 40. 
