210 PROCEEDINGS OF THE GEOLOGICAL SOCIETT. [Jan. 8, 



upper molar labelled by Dr. Falconer " the penultimate." It belonged 

 to an animal in its full prime, and agrees exactly with the first 

 upper true molar figured. In Mr. Fitch's collection also, in '^ot- 

 wich, there is a fii'st upper true molar, togerther with one too much 

 worn to have its position in the jaw accurately determined. In the 

 British Museum there is an Etruscan left upper true molar 2, which 

 was formerly in the Layton collection. The black ferruginous matrix 

 which adheres to it proves that it was obtained from the Forest-bed, 

 while its waterwom condition shows that it has been exposed to the 

 waves of the sea. It was therefore most probably obtained from the 

 Xorfolk or Suffolk shore, or perhaps may have been dredged up from 

 the bottom of the German ocean oft' that coast. It agrees in eveiy 

 respect with the ti-ue molar which I have described above. This 

 list com]3rises all the Etruscan upper molars from British localities 

 which have passed through my hands. 



I wiU now pass on to the consideration of the teeth of Rhino- 

 ceros Etruscus from foreign localities. In a collection of Mammalia 

 in the British Museum, obtained by M. Bravard from PeroUes, are 

 two teeth described in his catalogue as those of the Tichorine species ; 

 they belong, however, beyond aU doubt, to the species under con- 

 sideration. The one, a left upper true molar 3 (PI. Till. fig. 5), agrees 

 in every respect with that of the jaw from Pakefield. The entrance, 

 however, to the anterior valley is rather wider and and more open. 

 The other is a left premolar 4 (PL YIII. fig. 2), very much worn, 

 that probably belonged to the same animal as the last true molar. 

 It presents all the characters ascribed above to the premolar series. 

 To M. Lartet I am indebted for evidence of the occurrence of the 

 species in a second locality in France, afforded by a first premolar 

 (Pm. 2), half worn, from the Pleiocene beds of Etampes (PI. YIII. 

 fig. 1). The entrances of the two valleys, a, b, are situated high 

 above the cingulum. The guard, o, is veiy stout, and especially on 

 the anterior aspect, and is removed from the cingulum by at least 

 0-3 inch. It sweeps round from the antero-extemal angle of the 

 tooth as far as the apex of the postero-intemal, and forms a pedestal 

 from which the two coUes, d and e, gradually taper upwards. The 

 external lamina, I, is tumid, and the second costa, Jc 2, is sti'ongly 

 marked. It presents one character not observable in any British 

 specimen, in the insulation of an accessory valley by two combing- 

 plates, h ; as, however, they spring from the anterior wall of the 

 second collis, e, they cannot be considered homologous with the an- 

 terior combing-plate, g, so characteristic of the Tichorhine species, 

 in which the latter invariably springs from the external lamina. 

 Both are therefore posterior combing-plates, h. A second specimen 

 sent by M. Lartet is a premolar 3, from Telay ; it agrees with the 

 description of the corresponding tooth from Xorfolk in all points, 

 except the great size of its posterior combing-plate, which is bounded 

 by a waved line of enamel. 



- The remains of the species are more abundant in Italy than any- 

 where else ; and there are several jaws and teeth from that country 

 in the Museums of Oxford and London. In the British Museum 



