74 
CH1M2EH0IPET. 
facette occupjdng 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. Log. 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. 
43804. 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. Light and left mandibular teeth. Purchased, 1860. 
47955-8. Two fragmentary mandibular teeth. 
Presented by the Hon. Robert Mar sham , 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. Enniskillen Coll. 
P. 8004. Mandibular teeth, associated with the vomerine and palatine 
teeth of the right side. Purchased, 1889. 
35134, 35137. Three imperfect palatine teeth. Purchased, 1859. 
