376 RHINOCEROS. 



discovery that the molars of the Rhinoceros from Kirch- 

 berg belonged to a distinct species which had already 

 received its appropriate name ; and he therefore proposes 

 to denominate it '''Rhinoceros Kirchbergense" * (sic, p. 

 179). 



Dr. Kaup has given a reduced and reversed view of the 

 same molar tooth in his ' Akten der U-rwelt, 1 8vo., 1841, 

 taf. i., fig. 4 ; he equally appreciates the distinction of its 

 structure from the corresponding molars of the Rhino- 

 ceros tichorhinus, and at the same time recognizes its speci- 

 fic identity with the molars from Crozes. The means of 

 identifying it with the Rh. leptorhinus were equally want- 

 ing to the Palaeontologist of Darmstadt, who, notwith- 

 standing a name had been already attached to the species 

 by Professor Jager, proposes to call it Rhinoceros Merckii. 

 The last molar tooth of the left side, which is retained 

 in a portion of the upper jaw from the fresh-water deposits 

 at Clacton, closely resembles the corresponding less worn 

 molar of the right side from Kirchberg, figured by Pro- 

 fessor Jager in the work cited, pi. xvi., fig. 32, and, like 

 it, differs from the corresponding tooth of the Rh. ticho- 



Fossiles,' torn. ii. pt. 1. pi. vi. fig. 5, in which the enamel island is formed by 

 the insulation of one lobe of the expanded termination of the valley (6), is thus 

 described : " On y voit aussi tres-bien la fossette, resultant de 1'union du crochet 

 posteiieur avec la colline anterieure, et 1'echancrure posterieure commence a etre 

 cernee." P. 57. The molar tooth of the leptorhine Rhinoceros, figured in pi. 

 xiii. fig. 4, in which the enamel island is due to the insulation of the entire un- 

 expanded end of the valley (6), is thus described, " Le trou anterieure y est deja 

 distinct par 1'union du crochet de la colline posterieure avec la colline anterieure, 

 mais Techancrure posterieure n'y est point encore cernee." Ib. p. 58. 



* The nomina trivialia, formed by latinizing German names of individuals 

 or places, grate harshly upon the ear. One regrets the obligation to adopt 

 such a name as SchJeiermacheri in place of megarhinus, but the law of 

 priority is absolute. With regard to names derived from particular localities, 

 they are obnoxious to the graver objection of indicating very partially and im- 

 perfectly the geographical range of the extinct species to which they are 

 applied. 



