513 



basisphenoid, alisphenoid, and orbitosphenoid. The bones are numbered on coloured labels 

 according to the TABLE OF SYNONYMS. 



Presented by Joseph H. Green, Esq., F.R.S. 



2974. The right maxillary, nasal, malar, and lacrymal bones of a very young or 

 foetal Indian Rhinoceros (Rhinoceros indicus). 



The second and third deciduous molars have begun to protrude from their formative 

 sockets, but their summits are unworn : the germ of the smaller molar anterior to these may 

 be seen in its formative socket, and in front of this is a minute, simple, conical, obtuse tooth, 

 placed like a canine close to the sutural surface which unites with the premaxillary (' Odonto- 

 graphy,' pi. 138. fig. 13 c, p. 592). 



Presented by Prof. Owen, F.E.S. 



The following, to No. 3074 inclusive, are parts of the same skeleton of a young female 

 Indian Rhinoceros (Rhinoceros indicua) : 



Purchased. 



2975. The cranium. 



The calvarium has been taken off, exhibiting the numerous and large air-cavities in the 

 neural spines of the cranial vertebrae. The bones forming the expanded neural spines of the 

 cranial vertebrae are so curved, that the summit of the superoccipital bone, and the centre of 

 the nasals, form the two pillars from which are suspended the parietals and frontals, forming 

 an inverted arch. The highest point of the nasals shows a flattening of about half an inch 

 square. From this point the nasals curve downwards, ending pointedly, at three inches 

 distant. The petrotympanic is a distinct bone, and has been disarticulated on the right side 

 from the neighbouring ones. The premaxillaries have been broken off. The articulation 

 between the basi- and pre-sphenoids still remains. The ectocarotid canals, postglenoid, post- 

 tympanic and paroccipital processes, are present, as in the other skulls of Rhinoceros. 



The first small premolar is retained with the second and third deciduous molars, which are 

 much worn ; the fourth deciduous molar is likewise present, hut has not been much used. 

 The first true molar has come into place, and the edges of its crown are slightly abraded : 

 the second true molar is in its formative cavity, almost ready for use. 



2976. The lower jaw. 



There is a small hole behind the symphysis, extending for some distance into the bone. 

 The first small premolar is in place, and is slightly used ; the second and third deciduous 

 molars are more worn ; the fourth deciduous molar is not much worn. The first true molar 

 is in its pkce, with the crown but little abraded ; the second and third true molars are in 

 their formative sockets. 



3u 



