8ELACHII. 
4:i(i 
iii. A^jrioTwdon, Gill (Ann. Lyc. Nat. Hist. New York, vol. vii. 
1802, p]>. 401, 411). Aprion, Miillcr & llcnlc, op. oil. 
p. 31. 
Teeth narrow, on a broad base ; the lower erect, the upper 
erect or only slightly oblique. 
11. Some or all of the teeth serrated. 
iv. Hypoprion, Miillcr & lleiile {op. cit. p. 34). 
Lower teeth not serrated, upper only serrated at the base. 
V. Frionoclon, Muller & Ilonlc (o^j. cit. p. 35). Olyphis, L. 
Agassiz, Poiss. Foss. vol. iii. 1843, p. 243. 
Some or all the teeth entirely sci’ratcd. 
i. SCOLIODON. 
Carcharias (Scoliodon) orpiensis (Winkler). 
1870. Notidanua orpiensis, T. 0. Winkler, Archiv. Mus. Teyler, vol. iv. 
p. 12, pi. i. figs. 13-17. 
1870. Notidumis orpiensis, A. Rutot, Ann. Soc. Roy. Malacol. Relg. ^ 
vol. xi. p. 29, pi. i. fig. 3. 
Type. Detached teeth. 
Teeth with a broad, low crown, the anterior margin arched and 
the posterior margin deejdy notched. Faint truces of serrations 
occasionally observable upon the anterior coronal margin, more fre- 
quently upon the posterior margin below the notch. 
Form. ^ hoc. Lower Eocene : Belgium and England. 
P. 4104. Twe teeth ; Woolwich and Reading Beds. 
Presented by Sydney C. Cockerell, Esq., 1883. 
P. 5742. Two teeth ; Lower Hcersian Beds, Orp-le-Grand, Belgium. 
Presented hy G. F. Harris, Esq., 1888. 
Carcharias (Scoliodon) eocsenuS) sp. nov. 
Tyqte. Detached teeth ; British !Museum. 
Teeth of considerable size, broad and triangular, much com- 
pressed ; dental crown with very slightly excavated posterior 
margin. 
Form. 4' Toe. London Clay : Highgato, London. 
43135. Two type specimens, the larger measuring O'Ol across the 
base ; llighgate Archway. Wetlierell Coll. 
The foUowing specimens also appear to bo referable to this sub- 
genus : — 
40242. Fifteen minute teeth ; Barton Clay, High Cliff, Hampshire. 
Edwards Coll. 
