﻿7-4 CHIM^EROIPET. 



facette occupying at least one third of the inner aspect ; beak-tritor 

 composed of a series of laminae, the other tritors consisting of 

 numerous tubules ; median tritor divided [in unabraded specimens] 

 into two small, widely- separated parts, of which the anterior is 

 placed upon the edge of the symphysis, and the posterior behind 

 the anterior outer tritor. Palatine tooth with very large tritors, the 

 two inner being broad, and the posterior of these tending to overlap 

 the narrow outer tritor. Vomerine tooth with a concave or grooved 

 symphysial surface ; the anterior tritor much larger than the 

 others. 



A specimen obtained by Mr. Charles Potter from the Chalk of 

 Lewes, and described by Newton, op. cit., makes known the com- 

 plete dentition of this species. 



Form. $• Loc. Neocomian : Isle of Wight. Albian : Kent. Ceno- 

 manian : Cambridgeshire, Norfolk, and Kent. Turonian : Kent 

 and Sussex. (?) Senonian : Norfolk. 



(i.) Gault, Folkestone. 



P. 23. Pair of mandibular teeth with very long beak. 



Gardner Coll. 



47183, P. 24. Two right mandibular teeth, one being imperfect. 



Gardner Coll. 



43604, Left mandibular tooth. Purchased, 1859. 



P. 25. Pair of palatine teeth. Gardner Coll. 



(ii.) Cambridge Greensand, Cambridge. 

 30252. Left mandibular tooth of moderate size. Purchased, 1855. 



35136. Very robust, large right mandibular tooth. 



Purchased, 1859. 



35399, 35400. Eight and left mandibular teeth. Purchased, 1860. 



47955-6. Two fragmentary mandibular teeth. 



Presented by the Hon. Robert Marsham, 1877. 



P. 1144. Portion of a very large right mandibular tooth. 



Egerton Coll. 



P. 3083-4. Small right mandibular tooth, and one of the left side 

 very small. EnnisTcillen Coll. 



P. 6004. Mandibular teeth, associated with the vomerine and palatine 

 teeth of the right side v Purchased, 1889. 



35134, 35137. Three imperfect palatine teeth. Purchased, 1859. 



