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LAMNID^E. 
421 
The type species of moderate size. Teeth comparatively broad, 
compressed, without indications of lateral denticles. Coronal apex 
often slightly curved outwards; external coronal face of the upper 
teeth often marked by few vertical wrinkles. 
As the result of Lawley’s researches, the fossil teeth here enume¬ 
rated may be regarded as pertaining to the existing species^— 
Form. Sf Loo. Pliocene : Italy, Sicily, and England."" (?) Miocene 
27029-30, 27520. Nine abraded teeth ; Red Crag, Sutton, Suffolk. 
Purchased , 1851-52. 
41341. Eight abraded teeth ; Red Crag, Suffolk. 
Brown Coll.—Presented by Sir Richard Owen , K.C.B. , 1859. 
zb 5* 
P. 5305. Tooth with scarcely abraded crown; Coralline Crag, 
Orford, Suffolk. Purchased. 
P. 2313. Imperfect tooth, much resembling those of this species; 
Older Miocene (?), New Zealand. By exchange , 1876. 
47022. Tooth and dental crown ; Orciano, Tuscany. 
Purchased , 1875. 
P. 5550. Four teeth, more or less imperfect; Piacenza, N. Italy. 
By exchange , 1888. 
48996. Seven teeth ; Newer Tertiary, Coquimbo, Chili. 
Presented by C. J. Lambert , Esq., 1878. 
The following species are also recognized upon the evidence of 
detached teeth, though it is not improbable that some of the names 
are synonyms of those recorded above :— 
Carcharodon brevis , H. Le Hon, Prelim. Mem. Poiss. Tert. Belg. 
(1871), p. 7, woodcut.—Pliocene ; Belgium. 
Carcharodon caifassii, R. Lawley, Nuovi Studi Pesci etc. Colline 
Toscane (1876), p. 23.—Pliocene : Tuscany. 
Carcharodon costce, G. G. Gemmellaro, Atti Accad. Gioenia Sci. 
Nat. [2] vol. xiii. (1857), p. 303, pi. v. a. figs. 1 a, 2 a .— 
Miocene ; Sicily. [? C. megalodon .] 
Carcharodon gibbesii, G. Michelotti, Miocene Inf. Italie Septen- 
trionale (Mem. Soc. Holland. Sci. Haarlem, 1861), p. 143, 
pi. xiv. figs. 5-7.—Miocene; N. Italy. 
Carcharodon leptoclon , L. Agassiz, Poiss. Eoss. vol. iii. (1843), 
p. 259, pi. xxviii. figs. 1-6.—Formation and locality 
unknown. 
