DENTITION OP LIVING SPECIES. 403 



cated, of a rudimentary incisor. There were, therefore, four incisors 

 below, deciduous in the adult animal, and which were in immediate 

 contiguity with the molar series without the interruption of a diasteme. 

 On the whole, the dentition of this skeleton reminds me very much of 

 that of the adult Rhinoceros bicornis of Africa. 



There is one peculiarity in the skull deserving notice, viz. that while 

 the suborbital foramen on the left side is single, on the right side there 

 are distinctly three foramina disposed in a triangle. The skin of the same 

 skeleton has been mounted, forming a very fine specimen. It presents 

 two horns, of which the nasal is 27 inches long, and 18^ inches in 

 girth at the base. The posterior horn is contiguous at the base with the 

 anterior. It is of large size, measuring about 13 inches in height and 

 17^ inches in girth at the base. On referring to the excellent figures 

 in Anderson's ' Lake Ngami ' (p. 386), it would seem that the Saffron 

 Walden skeleton is a R. Keitloa, both horns being of considerable 

 length ; in Anderson's figure they are subequal. 



II. — Note on Ehinoceros camus. 



In the same Museum there is also a skeleton of a. little Rhinoceros 

 Camus. Both jaws show seven molars on each side, the seventh in the 

 upper jaw being barely out. The front . of the lower jaw shows the 

 pits of four incisors which had fallen out, the pits being nearly filled 

 up ; the two outer are large, the two inner small. The alveolus of the 

 outer incisor is overarched by the first premolar, there being only two 

 lines of interval. 



III. — Note on dentition of Ehinoceros bicornis. 



Leeds, July 17, 1858. 



In the Natural History Museum there is a very fine skull of Rhino- 

 ceros bicornis in the best possible age for the comparison of the denti- 

 tion, but it has no lower jaw. All the permanent teeth are in place; 

 the premolars are well worn, and the last molar is just worn sufficiently 

 to show the pattern perfectly. The 3rd right premolar has three 

 distinct fossettes, and the 2nd, 3rd, and 4th have a distinct basal 

 bourrelet on the inner side very salient and marked, and continuous with 

 the anterior and the posterior bourrelet. There is no inner bourrelet 

 to the three last molars. The last molar has an interior bourrelet, but 

 only one or two warty tubercles posteriorly. The posterior barrel is 

 bifurcate. There is a very minute rudimentary incisor in the incisive 

 bone on the right side. 



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