ORDER OF PACHYDERMATA. 
145 
curves backward and terminates over the blade-bone in the latter. 
In R. sondaicus the neck-folds are less heavy and pendulous, 
and the posterior plait which crosses the buttock from the base 
of the tail is less extended, not reaching to the great vertical 
! fold anterior to the hind- quarters, as it does in R. indicus. Of 
numerous skulls examined of both of them, those of each varying 
: considerably in contour, the width in some being conspicuously 
greater than in others, the depth of the ascending portion of the 
lower jaw — from the condyle to base— averages twelve inches in 
adults of R. indicus , and never exceeds nine inches in R. sondaicus. 
The length of skull from occiput to tip of united nasal bones 
(measured by callipers) is, — in R. indicus , two feet (half an inch 
more or less, English measure) ; in R. sondaicus , a foot and three- 
quarters at most. Breadth of bony interspace between the tusks 
of the lower jaw, — in R. indicus , one and a half to one and three- 
quarters inches ; in R. sondaicus , three-quarters to one inch. The 
skulls of R. sondaicus examined were from the Bengal Sundarbans, 
the Tenasserain provinces, and Java ; and it was from a Javanese 
skull that the illustrious anatomist, Cowper, first discriminated it 
as a distinct species from the others ; the same individual skull 
[l being figured in the Ossemens Fossiles of Baron Cuvier, who, in 
that work, rightly indicates the animal as being a little smaller 
than the other ( d'une taille un peu moindre ), and as otherwise much 
resembling it ; but in his subsequently published second edition of 
the Regne Animal , while mentioning the particular distinction of 
the great neck-fold, he refers to his brother’s figure in the Planches 
des Mammiferes , as illustrative of his R. javanas. Professor Schirz, 
however, gives the species of Frederic Cuvier as R. javanicus. 
But the late Dr. Horsfield had previously well figured the 
animal, in his Zoological Researches in Java , as R. sondaicus of 
Cuvier, and by the same name it has since been figured and 
described in the great Dutch work of Dr. Salomon Muller and 
Professor Semminck. Now M. Frederic Cuvier’s figure of 
his supposed Javanese Bhinoceros represents, most decidedly, a 
young animal of the Asiatic Two-horned Bhinoceros, which does 
not inhabit Java ! And it is a better figure of the latter than the 
one which he gives as representing that two-horned species. Both 
are copies of drawings by native artists, sent by MM. Diard and 
Dusancel ; and in the former instance the posterior horn had been 
L 
