508 



2938. The right moiety of the same cranium. 



A part of the upper maxillary bone has been removed to show the germ of the fourth pre- 

 molar above the fourth milk-molar, which has not been shed : the germ of the last true molar 



is similarly displayed. 



Presented by Sir Stamford Raffles, P.Z.S. 



2939. The lower jaw of the same skull. 



The germ of the last premolar is exposed beneath the last deciduous molar on the right 



side. 



Presented by Sir Stamford Raffles, P.Z.S. 



2940. The pelvis of a male Sumatran Rhinoceros (Rhinoceros sumatrensis}. 



The sacrum consists, as in the skeleton, No. 2933, of four vertebrae : the spines of the two 

 middle ones expand at their summit, and are anchylosed at their posterior angles to the ilia. 

 The diapophyses of the first sacral vertebra develope articular surfaces for the anapophyses of 



the last lumbar. 



Presented by Sir Stamford Raffles, P.Z.S. 



2941. The skull of an African Rhinoceros (Rhinoceros bicornis, Linn.). 



The fourth premolars are just coming into place in the upper jaw : the corresponding deci- 

 duous molar still remains on the right side of the lower jaw : the small anterior molar, p 1, is 

 retained on the left side of the lower jaw : the last true molars are in their formative alveoli 

 in both jaws. The left petrotympanic bone has been removed. The mastoid processes are 

 better developed than in the Sumatran species. 



Purchased. 



2942. The cranium of a young African Rhinoceros (Rhinoceros bicornis}. 



The deciduous molars, four on each side, are in place, and the summit of the first true 

 molar is beginning to appear. The dried integument and horns remain adhering to the upper 

 surface of the skull. This specimen is called, in the former Osteological Catalogue, "Rhi- 

 noceros Bicornis Sumatrensis" and is stated to be "the head of the original specimen de- 

 scribed and figured by Mr. Bell in the 'Philosophical Transactions,' vol. Ixxxiii. pi. ii. * :" 

 but the absence of elongated premaxillaries with incisive teeth or sockets, together with the 

 size and configuration of the molar teeth in place, prove it to belong to an African two-horned 

 species ; and, with regard to the plate referred to, it is engraved from a drawing taken in 

 Sumatra from a male specimen the day after it was shot ; and it is stated that " There were 

 six molares or grinders on each side of the upper and lower jaw, becoming gradually larger 

 backward, particularly in the upper. Two teeth in the front of each jaw." Phil. Trans. 

 1793, vol. Ixxxiii. p. 3. 



Hunterian. 



* 4to, 1831, p. 118, No. 815. 



