UNGULATA. 39 



The upper true molars and lower cheek teeth of the Crag 

 Rhinoceros are much less certainly determinable. 



Rhinoceros incisivus seemed to have lived in Europe from the 

 Middle Miocene to the Lower Pliocene,. 



RHINOCEROS SCHLEIERMACHERI, KAUP. 

 PLATE VI., FIG. 4 a, b. 



Although the specimens of Rhinoceros upper cheek teeth 

 referred by Sir R. Owen (Quart. Journ. Greol. Soc., Vol. XII., 

 p. 217 and 231, 1856) to this species are probably more correctly 

 identified by Mr. Lydekker with R. incisivus (Quart. Journ. Geol. 

 Soc., Vol. XLIL, p. 366, 1886), yet there are specimens of upper 

 premolars from the Nodule-bed of the Red Crag of Suffolk without 

 any inner cingulum, and these I think should still be referred to 

 R. Schleiermacheri ; the distribution of this species is much the 

 same as that of R. incisivus. 



RHINOCEROS ETRUSCUS, FALCONER. 



(Vert. Forest Bed, p. 38. PLATE VIII.) 



This species was founded by Dr. Falconer (Pal. Mem., Vol. II., 

 p. 309, 1868) for a Rhinoceros found in Italian Pliocene Strata, 

 and its presence in the Forest-bed is well established. It has been 

 suggested that some of the Red Crag Rhinoceros remains might 

 belong to R. etruscus (Lankester, Quart. Journ. Geol. Soc., Vol. 

 XXVI, p. 510, 1870, and Lydekker, ibid., VoL XLIL, p. 366, 

 1886), but there is no definite evidence that such is the case. 



Rhinoceros etruscus in Britain seems to have been restricted 

 to the Forest-bed ; on the continent it has been found in the 

 Upper Pliocene of France, Spain, and Italy ; and some specimens 

 found near Rome may be of Pleistocene age. 



RHINOCEROS MEGARHINUS ? CHRISTOL. 



(Vert. Forest Bed, p. 40. PLATE IX., FIG. 1.) 



A single upper tooth from the Forest-bed was referred by 

 Dr. Falconer (Pal. Mem., Vol. II., p. 398, 1868) to this species, 

 but no further evidence of its occurrence at this horizon in Britain 

 has since been obtained (Dawkins, Quart. Journ. Geol. Soc., Vol. 

 XXIIL, p. 214, 1867). The species is met with in Caves and in 

 the Pleistocene gravels of the Thames Valley. In Europe the same 

 form under different synonyms has been recorded from Pliocene 

 Beds in France, Germany, and Italy. Dr. Falconer (loc. cit., 



