370 RHINOCEROS. 
lar attachments in relation to the stronger and heavier 
horns.* 
The true characters of the skull of the Rhinoceros lepto- 
rhinus, and its distinction from that of the Rh. tichorhinus 
being established, there remains only to compare it with 
the skulls of other known species of Rhinoceros. The 
descriptions by Cuvier, ‘ Ossemens Fossiles,’ 4to., 1824, 
tom. v., pt. u., p. 502; by Dr. Kaup, ‘ Ossemens Fossiles 
de Darmstadt,’ 4to., 1834, 3™° cahier, p. 39, and by M. 
Christol, ‘ Annales des Sciences Nat.,’ 1835, p. 76, of 
the extinct two-horned species, referred by Cuvier to his 
Rh. incisivus, but first accurately determined by Dr. Kaup 
under the name of Rh. Schleiermacheri, and shortly after 
by M. Christol under that of Rh. megarhinus, leave no 
room for doubt as to its specific distinction from the 2h. lep- 
torhinus. Cuvier and Dr. Kaup are silent as to the presence 
or otherwise of a bony nasal septum in the Rh. Schleverma- 
cheri, and the excellent figure of the skull of that species in 
Dr. Kaup’s work shows no trace of it. It is equally absent 
in the original figure of the Montpellier specimen, given 
by M. Christol in the ‘Annales des Sciences,’ tom. cit., 
pl. in, fig. 5; and the latter author expressly states “that 
* These specific distinctions of the &h. tichorhinus, and Rh. leptorhinus, 
will be readily appreciated by the subjoined table of comparative dimen- 
sions :— 
Rh, tichorhinus. Rh. leptorhinus. 
In. Lin. In. Lin. 
Length of the skull (in a straight line) ‘ 31 (OO 28 «(0 
Least breadth between temporal ridges é 3 6 1 5 
Breadth of nasal bones opposite the hind border of ¥ g 4 an 
the nasal aperture : . : ) 
Breadth, opposite middle of nasal aperture . Hr MS noe) 
Breadth of the anterior extremity of nasal platform AsO oh) 
Length of nasal aperture 8 0 8 10 
Breadth of upper part of occiput So 4 0 
Do. of middle of occiput SG Gg 
