420 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [May 20, 



posed Ornithichnites of Derry as spurious has by no means led me 

 to doubt the genuineness of those that I formerly examined in the 

 red sandstone of the Connecticut valley, and which have been so 

 fully described by Professor Hitchcock. On the contrary, those 

 fossil foot-prints were found under circumstances in all respects 

 analogous to those which lead me to believe in the reality of the 

 Cheirotherium which has been discovered in the coal strata near 

 Greensburg. These reptilian tracks occur in one locality only ; no 

 others have yet been found in the same place, nor under similar 

 circumstances elsewhere. 



3. Description of an Upper Molar Tooth o/'Dichobune cervinum 

 from the Eocene Marl at Binstead, Isle of Wight. By Prof. 

 Owen, F.R.S., F.G.S. &c. 



Dichobune. 



Moschus. 



Dichobune. 



Dichobune. Moschus. 



(Lower Molars.) 



Moschus. 



The species of Anoplotherian quadruped described in the * Geolo- 

 gical Transactions,' second series, vol. vi. p. 41, and in my 'British 

 Fossil Mammalia,' p. 440, under the name of Dichobune cervinum, 

 has hitherto been known only by the fragment of lower jaw with 

 three molars, first described and figured by S. P. Pratt, Esq., F.R.S., 

 in the third volume of the same series of ' Geol. Trans.,' p. 451. As 

 the lower molar teeth are less characteristic of the aberrant Ano- 

 plotheriidae and less distinct from those of the Ruminantia than the 

 upper ones, the opportunity of examining an upper molar tooth of a 

 Dichobune was much to be desired, more especially since Cuvier had 

 not been able to obtain more than one small fragment of the upper 

 jaw, with two premolars, of this subgenus, from the Eocene forma- 

 tions in France *. 



I am indebted to Hugh Strickland, Esq., F.G.S., for the desired 

 opportunity of examining the upper true molar, either first or se- 

 cond of the left side, here figured (figs. 1, 2). It was obtained at 

 Binstead, in the Isle of Wight, from the same quarry as the lower 

 jaw of the Dichobune cervinum above referred to, and it presents 



* See * Ossemens Fossiles,' 4to, 1825, vol. iii. pi. Ivi. fig. 7. 



