1010 DR. J. E. GRAY ON THE RHINOCEROTID^. [DeC. 12, 



first pointed out that there were two Asiatic one-horned Rhinoce- 

 rotes with upper incisors. His specimen, by the misfor'tunes of war, 

 fell into the hands of Cuvier, and was described by him in the 

 ' Ossemens Fossiles' (ii. 2C). Cuvier regards the height of the 

 occipital arch and the want of the apophysis on the upper edge of 

 the intermaxillary as the chief character of the Javan species ; but 

 the apophysis is generally absent in the Indian species, it appears 

 only to be found in the skulls of the very old males of that kind. 



2. Rhinoceros unicornis. Indian Rhinoceros. B.M. 



Skull : — forehead broad, flat, concave ; nose behind the horn con- 

 vex, subcylindrical, rounded at the sides ; lachrymal oblique, longi- 

 tudinal, oblong, rather four-sided ; intermaxillary bones broad, thick, 

 with a bony process on the middle of the upper edge ; nasal bones 

 short, broad, about two-fifths of the entire length of the nose and 

 crown ; zygomatic arch of the adult rather convex . 



Rhinoceros unicornis, Linn. S. N. i. 104 ; Gray, List Mamni. 

 B. M. 186 ; Gerrard, Cat. Bones B. M. 286 ; Cuvier, Oss. Foss. ii. 

 t. 4. f. 1 ; Blainv. Osteog. t. 2 (skull, adult). 



R. asiaticus, Blumenb. Handb. 10, Abbild. t. 7 B. 



R. indicus, Cuv. Mem. Mus. t. ; Oss. Foss. ii. .5, t. 1-4 (bones) ; 

 F. Cuv. Mamm. Lithogr. t. ; Schinz, Syn. 333 ; Owen, Cat. Osteol. 

 R. C. S, 513, nos. 297.5 to 3074. 



Indian Rhinoceros, Parsons, Phil. Trans. 1742-43, p. 52.5, t. 1, 2 

 (from life). 



Rhinoceros inermis. Lesson, Cat. 



Hah. India. 



The skull figured by Cuvier and by De Blainville for the skull of 

 R. unicornis, probably from the same skull in the Paris Museum, 

 has a broad bony process on the middle of the upper edge of the 

 intermaxillary bones. The skeleton and skull in the British Museum 

 (122 g), from an adult male specimen that lived for several years in 

 the Zoological Gardens, has this bony process well marked ; so that 

 it seems common in the species, if not a peculiar character of it. 



Mr. Blyth thinks that " the adult male Rhinoceros that lived in 

 the Zoological Gardens for several years, stated to have been cap- 

 tured in Arakan, was R. sondaicus." He proceeds, " The two Asi- 

 atic one-horned species, indeed, resemble each other a great deal 

 more nearly in external appearance than the published figures of 

 them would lead to suppose ; certainly no sportsman or ordinary 

 observer would distinguish them apart, unless attention had been 

 specially called -to the subject." — Journ. Asiatic Soc. Bengal, xxxi. 

 1862, p. 132. This explains how the species, now described for the 

 first time, may have been overlooked. 



In the British Museum there is the skeleton (722 ff) with the 

 skull of an adult animal that lived for several years in the Zoological 

 Gardens, referred to by Mr. Blyth, and a skull from a just born 

 animal, which was j)resented by Mr. Bryan Hodgson from Nopal. 



There are in the British Museum other skulls whicli have been 



