210 TWO-HORNED KIIINOCEKOS. 
Upon the whole, there can be little doubt that 
there are^ in reality, three different species of 
Rhinoceros, viz. the common or single-horned 
Asiatic Rhinoceros, which seems to admit of oc- 
casional varieties, and may, perhaps, be sometimes 
furnished with a second or smaller horn ; the Af- 
rican double-horned Rhinoceros with a rough or 
tuberculated skin, which Av^as the species known 
to the ancient Romans; and, lastly, the Sumatran 
double-horned Rhinoceros, described and figured 
by Mr. Bell in the Philosophical Transactions. 
The skulls of the above animals, compared to- 
gether, exclusive of other characters,, afford suf- 
ficient grounds for supposing a real difference of 
species. It is also necessary to observe here, that 
the Sumatran species, being furnished with denies 
primores^ or fore teeth, seems, of course, to con- 
tradict the character of the order Bruta, in which 
it is here placed. The common Rhinoceros also^ 
when young, is provided with fore teeth, which 
are afterwards lost; as is probably the case in the 
Sumatran species. 
In the twelfth edition of the Systema Naturae 
the genus Rhinoceros was stationed among the 
Belluce. In reality, however, where other promi- 
nent characters appear, and Avhicli are of them- 
selves sufficient for the purpose of investigation, 
this scrupulous attention to the nature and situa- 
tion of the teeth is the less important. 
Mons. Geoffroy, in the Magazin Encyclope- 
dkjue, is inclined to believe that there either exist, 
or, at least, have existed, no less than five differ- 
