﻿58 CHIM^EOIDEI. 



P. 600. Type specimen, almost detached from matrix and much 



abraded externally. Egerton Coll. 



P. 5152. Right mandibular tooth exhibiting relatively larger tritors, 



but probably of this species, shown, of the natural size, in 



PI. I. figs. 11 a, b. Egerton Coll. 



P. 3105. Imperfect left mandibular tooth, outer aspect. 



Enniskillen Coll. 

 A supposed distinct species is founded upon a right mandibular 

 tooth exhibiting only the outer aspect; but it is not capable of 

 definition and precise separation from G. rugulosus. The original 

 specimen was described as Chimara curvidens, Egerton, Proc. Geol. 

 Soc. vol. iv. (1843), p. 154, and subsequently named Iscliyodus 

 curvidens, Egerton, ibid. p. 156, and Ganodus curvidens, Egerton, 

 Quart. Journ. Geol. Soc. vol. iii. (1847), p. 352 ; it is placed first in 

 the following series of teeth from the Stonesfield Slate, which repre- 

 sent the " species " in the collection : — 



P. 599. Type specimen, shown, of natural size, in PI. I. fig. 12. 



Egerton Coll. 

 P. 3104. More imperfect left mandibular tooth of similar form. 



EnnisTcillen Coll. 

 28595. Small right mandibular tooth ; Eyeford, Gloucestershire. 



Purchased, 1853. 



Ganodus sp. 



[Plate I. fig. 13.] 

 A single example of a palatine tooth from the Stonesfield Slate 

 (P. 3107. EnnisTcillen Coll.) indicates an unusually large species of 

 Ganodus. The specimen is of the right side and is shown, of the 

 natural size, from the oral aspect, in PI. I. fig. 13 ; the inner tritors 

 are few, large, and well-separated, and the outer tritors have only 

 three minute representatives. It is possible that the fossil pertains 

 to the same species as the imperfect right mandibular tooth described 

 as CTiimcera bucklandi, Egerton, Proc. Geol. Soc. vol. iv. (1843), 

 p. 153, Iscliyodus bucklandi, Egerton, ibid. p. 156, and subsequently 

 described and figured by Agassiz, Poiss. Eoss. vol. iii. (1843), p. 343, 

 pi. xl. c. fig. 19, under the name of Cliimcera (IscJiyoclon) bucklandi, 

 afterwards assigned to Ganodus by Egerton, Quart. Journ. Geol. Soc. 

 vol. iii. (1847), p. 352. This specimen, however (P. 478. Egerton 

 Coll.), is too imperfect both for generic and specific determination. 



To Ganodus, also, must probably be assigned the following small 

 dorsal fin-spines from the Stonesfield Slate, all obtained from Stones- 

 field, unless otherwise stated : — << 



