CESTKACIONTID^. 
335 
the teeth of the series next to the largest in front are also 
about equal in size to the latter, and then follows a still 
narrower row, the teeth (PI. XI. fig. 26) measuring 0*003 
in length. A few displaced teeth, with an irregular orna¬ 
mentation, are situated near the anterior extremity of the 
left mandibular ramus, and one is shown, of twice the 
natural size, in PI. XI. fig. 27. Capron Coll. 
49771. 
Imperfect remains of a small head preserved in the two 
halves of a block of chalk; Upper Chalk, Southeram Pit, 
Lewes, Sussex. Capron Coll. 
^39060. Pragments of cartilage with three teeth; (?) Kent. 
BowerbanTc Coll. 
/ 
P. 1293. Pragments of cartilage and about three teeth; Bromley, 
Kent. Egerton Coll. 
v / 49734. Portion of a vertebral column, with two dorsal fin-spines 
and remains of cartilage and shagreen, ascribed to this 
species by Sir Philip Egerton, Mem. Geol. Surv. loc. cit. 
pi. ix. fig. 2 ; Upper Chalk, Glynde, near Lewes. An 
anterior tooth of C. canaliculatus is artificially attached to 
the specimen, and may have been found associated. The 
first dorsal fin-spine is broken, but restored in Egerton’s 
figure, and is not so much curved as in the fossil in the 
"Willett Collection, Brighton. Capron Coll . 
Cestracion rugosus (Agassiz). 
1839. Acrodus rngosus , L. Agassiz, Poiss. Foss. vol. iii. p. 148, pi. xxii. 
figs. 28, 29. 
1887. Frepanephorns, A. S. Woodward, Geol. Mag. [3] vol. iv. p. 103. 
1888. JDrepanephoras, A. S. Woodward, Proc. Geol. Assoc, vol. x. 
p. 290. 
Type. Detached tooth : Palaeontological Museum, Munich. 
A larger species than the foregoing, the principal teeth moderately 
elevated mesially, and the extremities sometimes narrowed, but 
either abruptly truncated or pointed. 
Form. Sf Loc. Senonian : S.E. England. Danian : Holland. 
4166. Nearly perfect tooth, shown, of the natural size, in PI. XI. 
fig. 29 ; Lewes, Sussex. Mantell Coll. 
w P. 323. A smaller narrower tooth; Charing, Kent. 
Harris Coll. 
