12 GEOLOGICAL MEMOIRS. 



fragment of upper jaw, found in Pennsylvania, which bears not the 

 shghtest resemblance to that of the Rhinoceros, and indeed may well 

 be a work of art. Other specific names were produced by Kaup for 

 the Eppelsheim remains, together with Short Notices, in the * Isis,' 



1832, in Von Meyer's ^ Palseontologica,' 1832, and in the ' Jahrbuch,' 



1833. Amongst these was Rh. pachyrhinus, soon after re-named Rh. 

 Schleiermacheri, founded on two perfect skulls, jaws, and other 

 parts, and, according to Cuvier, belonging to Rh. incisivus. Rh. 

 hypsilorhinus was again transferred to the last-named species, and 

 Rh. Goldfussi was suppressed. The single incisor of Rh. leptodon, 

 from Wiesbaden, appeared to belong to Rh. Schleiermacheri, and the 

 four-toed, hornless Rh. incisivus served as the type of the new genus 

 Aceratherium. In 1834 the Third Part of Kaup's * Descript. Oss. 

 Foss.' appeared with a full description of the genus Rhinoceros. Rh. 

 Schleiermacheri, Rh. leptodon, Rh. minutus, and, under Acerathe- 

 rium, Rh. incisivus and Rh. Goldfussi, were referred to as individual 

 species. The same year was further distinguished by De Christol's 

 Memoir on the History of Rhinoceroses. With the aid of new ma- 

 terials this writer undertook a critical examination of Cuvier' s species. 

 Rh. tichorhinus retains incisors in the under, and probably in the 

 upper jaw ; Rh. leptorhinus is dissolved, its skull being given to Rh. 

 tichorhinus, the bones of its extremities to Rh. incisivus. The pe- 

 culiar characters which Cuvier could not recognise as satisfactory in 

 the remains of the Rh. incisivus he had at his command, are pointed 

 out in the Montpellier skull by De Christol, who thought that 

 on account of these newly found evidences of specific character it 

 should bear the new name Rh. megarhinus. In the same year also 

 Cortesi discovered a second skeleton in the Placentin ; and, mistaking 

 the humerus and femur, and the form of the tip of the jaw and of 

 the last upper molar, found in it new generic characters, the naming 

 of which, however, by the advice of Blainville, was postponed. On 

 the other hand, the well-known deposit of Sansan afforded numerous 

 bones which Lartel, also in 1834, distributed under the names of Rh. 

 brevimaxillaris, Rh. longimaxillaris, and Rh. quadridigitatus or 

 inermis. The description of these did not appear until 1836 *, and 

 then with some alterations of names — the species with four-toed 

 fore-feet and three-sided incisors appearing as Rh. tetradactylus lon- 

 gimaxillaris, the smaller one, with slender legs and shorter jaws, as 

 Rh. tetradactylus brevimaxillaris ; with a third, unnamed species. 



In Germany, in 1835-39, G. F. Jager was, like Kaup, busily engaged 

 in multiplying the specific names in his ^History of the Fossil Verte- 

 brates of Wiirtemburg.' The species he there gives are — Rh. Kirch- 

 bergensis, established on two upper and one lower molar, — acknow- 

 ledged by Kaup, and by him changed to Rh. Merkii, identified by 

 Owen as Rh. leptorhinus, and by Blainville placed with Rh. incisivus, 

 — Rh. choerocephalus, identified with Rh. incisivus by Jager himself, 

 who appears to have chosen this probably only as a provisional name, 

 — Rh. molassicus, which, according to the notice of Jager' s work in 



* Bulletin Soc. Geol. de France, vol. vii. 



