CESTRACIONTIDiE. 
297 
tour rounded and much elevated, often notably smooth, being marked 
only by a few sharp wrinkles. Anterior teeth with distinct indi- 
cations of lateral prominences. 
Form. Lot. Gault : Kent. 
47293a, P. Ha, P. 11 b. Two type specimens, and a tooth with a 
smoother coronal surface, shown, of twice the natural 
size, in PI. XIV. figs. 5-7 ; Folkestone. Oardner Coll. 
47223,47293-4, P. 11, P. 17. Six teeth; Folkestone. Gardner Coll. 
Acrodus nitidus, A. S. Woodward. 
1888. Acrodus A. S. Woodward, .‘X.nn. Mag. Nat. Hist. [C] 
vol. ii. p, 135. 
Type. Detached tooth ; British Museum. 
An imperfectly recognizable species, founded upon the unique 
tooth shown, of thrice the natural size, in PI. XIV. fig. 8. The 
dental crown is low and rounded and remarkably smooth, the faint 
wrinkles being only exhibited near the margin, though perhaps 
partly destroyed by abrasion. 
Form. ^ Loc. Upper Cretaceous: Bahia, Brazil. 
P. 5536. Type specimen. Presented by Joseph Mawson, Esq., 1888. 
Acrodus (?) illingworthi, Dixon. 
18-50. Acrodus iUinyioorthi, F. Dixon, Foss. Suss. p. 301, pi. xxx. 
figs. 11, 12, pi. xxxii. fig. 9. 
1887. Acrodus (?) iUinyioorthi, A. S. Woodward, Geol. Mag. [3J 
vol. iv. p. 101. 
1888. Acrodus (?) illinyworthi, A. S. Woodward, Proc. Geol. Assoc, 
vol. X. p. 200. 
Type. Imperfect detached teeth ; British Museum. 
A species of uncertain generic position founded upon teeth much 
like those of Acrodus, but more elongated, and some very suggestive 
of Orodus. Mosially, each tooth is considerably elevated, and there 
are faint indications of numerous lateral denticles ; the coronal 
wrinkles are numerous, prominent, and sharp. 
Form. Loc. Chalk : Sussex, Surrey, and Kent. 
25777-8. Two imperfect teeth, the type specimens figured by Dixon, 
op. cit. pi. xxx. figs. 11, 12 ; Southeram, Sussex. 
Dixon Coll. 
49858. Typical tooth ; L. Chalk, Guildford, Surrey. Capron Coll. 
39059. Typical tooth ; Dorking, Surrey. Bowerhank Coll. 
