654 MR. P. L. SCLATER ON THE RHINOCEROSES 
peculiarity, but was inclined to think it might be individual, not being aware of the 
other differences between the two forms. In 2. swmatrensis the ears are filled with 
short bristly hairs internally, but there is no speciai elongated fringe on the outer edge. 
In RB. lasiotis the interior of the ear-conch is nearly naked. 
The Sumatran Rhinoceros is also much smaller in bulk than the Hairy-eared, and 
about 6 inches less in height at the shoulder. 
Another point of distinction between the two animals is the longer tail of 2. swima- 
trensis, which is only covered by short black straggling bristles. In 2. dasiotis the tail 
is shorter and tufted, terminating in long brown hairs. 
Front view of head of R. lasiotis. Front view of head of 2. swmatrensis. 
The distance between the ears is much greater in 2. lasiotis than in R. sumatrensis, 
as will be seen by the accompanying drawings (figs. 5 and 6); and there can be no 
doubt that the skulls of the two species, when they can be compared, will exhibit 
corresponding differences. 
The skin of #. dasiotis is smoother and paler in colour; the hairs are longer and finer 
and of a rufescent hue, giving the animal a general colouring of lightish brown. In 
4. sumatrensis the skin is much darker and the hairs are short and bristly. 
Whether these and other differences between 2. lasiotis and the ordinary R. suma- 
trensis will be strengthened by corresponding divergences in their anatomy and osteology 
cannot be ascertained until the death of the present individual. 
