et. s </*- fz??- 
'I //V <'J i/ r /*{. •«/!' / 
/3 <- < -^-a) /(p-^—P ; a ^ - 
Z. /fy^* /^./i; 
CARCHARIID.3?. / ' ' 439 ColJ*^ 
mination. The following specimens, however, probably represent 
an unknown Eocene form : — 
P. 4104 a. Three small teeth, one showing three broad posterior 
denticulations ; Woolwich and Reading Beds, Chislehurst, 
Kent. Presented by Sydney 0. Cockerell , Escp, 1883. 
The following species has also been founded upon detached teeth, 
but there are no examples in the Collection: — 
JL. 
Carcharias (Hypoprion) sing-ularis , J. Probst, Wiirtt. Jahresh. 
vol. xxxiv. (1878), p. 123, pi. i. figs. 5, 6.—Molasse; 
Baltringen. - t ' / *" 3 
Zf2-? a /»- <r F” 1 -- 
Another tooth, from the Tertiary of Ngembak, Java, has been 
doubtfully assigned to this subgenus by K. Martin, Samml. geol. 
Reichs-Mus. Leiden, [1] vol. iii. (1883), p. 30, pi. ii. fig. 24. p * A /,> / o 
' V. PKIOjTODON. 2 .(/<}?/>. 
Carcharias (Prionodon) egertoni (Agassiz). 
1837. Carcharias minor, L. Agassiz in Egerton’s List of Fossil Fishes. 
1843. Corax eyertoni , L. Agassiz, Poiss. Foss. vol. iii. p. 228, pi. xxxvi. - f? 
. ( % s * 7 ; , . 
1847. Glyphis subulata , R. W. Gibbes, Proc. Acad. Nat. Sci. Philad. 
p. 268. 
/f It} 
p-21. 
1849. Galeocerdo eyertoni, R. W. Gibbes, Journ. Acad. Nat. Sci./ 
Philad. [2] vol. i. p. 192, pi. xxv. figs^3^-69. " - ' ^ 
1849. Glyphis subulata, Ii. AY. Gibbes, tom. cit. p. 194, pi. xxv. figs. 
86,87. /f*Z. fkL*. S-At. ^5, 2j> ^ §<? /^. 
Type. Detached teeth ; British Museum. r ^pf. / . 
Epper teeth broad, triangular, prominently serrated, both margins 
slightly concave. Lower teeth probably narrower than the upper, 
robust, and prominently serrated. 
Form. &f Loc. Eocene : South Carolina, U.S.A. Miocene: Mary¬ 
land, E.S.A V CtL+yScj^. & 
P. 2351. Type specimen, figured by Agassiz, tom. cit. pi. xxxvi. 
fig. 6; Maryland. Enniskillen Coll. 
P. 494. Larger tooth, figured ibid. fig. 7; Maryland. Ecjerton Coll. 
P. 2352. Still larger tooth; Maryland. Enniskillen Coll. 
41331. Two small teeth, one relatively narrow; Maryland. 
Purchased , 1869. 
P. 5746. Three teeth; probably from Maryland or South Carolina. 
47002. Tooth; Phosphate Beds, South Carolina. Purchased, 1876. 
