1867.] DR. J. E. GRAY ON THE RHINOCEROTID^fE. 1021 



There is a single skull of a half-grown animal of this species in 

 the British Museum (722 e), which was received from the Zoolo- 

 gical Society, without any special habitat. In the roundness of the 

 nose it shows some affinity to the skull of R. sumatrensis ; it is 

 different from that species in many particulars, in the prominence 

 of the occipital portion of the skull, and especially of the occipital 

 condyles. When placed by the side of a R. unicornis of the same 

 size and condition of teeth it stands rather higher, and is imme- 

 diately known by the length and slenderness of the nose and nasal 

 bones. 



The following fossil species probably belong to this genus : — 



1. Rhinoceros leptorhinus, Cuvier, Oss. Foss. ii. 71, t. 9, 10, 

 1 1 ; Blainv. Osteogr. t. 



Rhinoceros cuvieri, Desm. Mamm. 402. 

 Had. Fossil. 



2. Rhinoceros incisivus, Cuvier, Oss. Foss. ii. 89, t. 6. f. 9, 

 10; Blainv. Oste'ogr. 1. 



Hab. ? 



Cuvier (Oss. Foss. ii. 71, t. 9. f. 7) figures a fossil skull of a spe- 

 cies of this genus from a drawing made at Milan by M. Adolphe 

 Brongniart. See also an imperfect skull figured by Blainville (Os- 

 teographie, t. 14, figure at left upper corner of the plate). 



2. Ceratorhinus. 



Skin divided into shields by deep folds, the lumbar fold rudimen- 

 tary, short, only occupying the middle of the space between the 

 groin and the back. Horns two : front longer, curved backwards ; 

 hinder small, conical. Skull : — forehead narrow, flat ; the upper 

 part of the nose on each side of the horns narrow, rounded, sub- 

 cylindrical ; the occipital region erect, the part near the condyles 

 rather concave, the occipital condyle short, broad, oblong, placed 

 obliquely inferior, scarcely prominent ; lachrymal bone very large, 

 irregular-shaped . 



1. Ceratorhinus sumatranus, B.M. 



R. bicorne de Sumatra, Cuvier, Oss. Foss. ii. 27, t. 4, iii. 42, t. 78. 

 f. 8 (from Bell, skull j. 



Rhinoceros sumatrensis, Cuvier ; Blainv. Osteogr. t. 2 (skull $ ), 

 t. 7 (teeth). 



Rhinoceros de Java, F. Cuvier, Mam. Lithog. t. (not good). 



Sumatran Rhinoceros, W. Bell, Phil. Trans. 1793, p. 3, t. 2, 3, 4 ; 

 Home, Phil. Trans. 1821, p. 270, t. 21, 22. 



Rhinoceros sumatranus, Raffles, Linn. Trans, xiii. 2G8 ; Blainv. 

 Oste'ogr. t. (skull); Gerrard, Cat. Bones B. M. 282; Miiller, 

 Verhand. t. 35 (old and young); Blyth, P. Z. S. 18(il, p. 3()G, 

 1862, p. 1; Journ. Asiat. Soc. Bengal, xxxi. 1862, p. 151, t. 3. 

 f. 1, 2, 3. 



