348 
SELACHII. 
6 
sf' 
Y‘ 
y 
removal of matrix since the publication of the original 
figure and description; and these exhibit the characters 
noted in the foregoing generic and specific diagnoses. 
Enniskillen Coll. 
^ Genus GIEJGLYiyEOSTOl^TAj Muller & Henle. 
[Syst. Beschreib. Plagiostom. 1841, p. 22.] 
Syn. Nebrius, E. Riippell, Neue Wirbeltli. Abyssinien, Fische, 1835, 
p. 62. 
Plicoclus, T. C. Winkler, Archiv. Mus. Teyler, vol. iii. 1874, 
p. 301. 
Acrodobatis, J. Leidy, Journ. Acad. Nat. Sci. Philad. [2] vol. viii. 
1877, p. 250. 
First dorsal fin above or partly behind the pelvics ; origin of 
second dorsal in advance of the anal. Teeth robust, with a broad 
depressed root, flattened and not divided into two radicles ; anterior 
face of the crown much larger than the posterior, produced down¬ 
wards and forwards mesially, the trenchant coronal border more or 
less coarsely denticulated. 
V* 
W 
Ginglymostoma serra (Leidy). 
0 
V 
/ J.V 1877. Acrodobatis serra, J. Leidy, Journ. Acad. Nat. Sci. Philad. [2] 
r V fnl T/iii "n 9n0 i'll vvviv firvcs 1 H IQ 
6?' 
Ntf A 
r/ 
- C 
- <$• * 
vol. viii. p. 250, pi. xxxiv. figs. 10-13. 
(?) 1877. Acrodobatis obliquus , J. Leidy, tom. cit. p. 250, pi. xxxiv. fig. 14. 
Type. Detached teeth. 
Median cusp of dental crown narrow, prominent; lateral serra¬ 
tions relatively small and numerous (about 7-9). 
Form. Sc Log. Eocene: South Carolina, Alabama, and (?) New 
Jersey, U.S.A. 
P. 1216. Two teeth, one shown of the natural size in PI. XVI. 
/MtlfC, e fig '- ; Clarke’s Co., Alabama. Egerto 7 i Coll. 
The following species have also been founded upon detached teeth, 
but there are no examples in the Collection:— 
Ginglymostoma minutum , W. Dames, Neues Jahrb. 1888, vol. ii. 
Beferat. p. 323. Hybodus minutus , H. Eorir, Ann. Soc. 
Geol. Belg. vol. xiv. (1887), p. 35, pi. ii. figs. 2, 3.— 
Danian ; Maastricht, Belgium. 2 z<r- 
(7' e ; Ginglymostoma tliielense J F. Noetling, Sitzb. Ges. naturf. Fr. Berlin, 
1886, p. 14, figs. 2, 3. Plieodus thielensis, T. C. Winkler, 
Archiv. Mus. Teyler, vol. iii. (1874), p. 301, pi. vii. fig. 5 ; 
, ibid. vol. iv. (1876), p. 20.—Brnxellian Eocene; Belgium. 
^crS. V fr go Aj, /. fif. viii A- ~/3j ? ~7^ 7 
/ 
^,'yc S’), A b-Jp.-Ay. a-/, jg 
, ePdPz-.'^-* — dsirP. AZZ. Pr't^s S ^ P~P, yC . p* -. AC, 
P~Z vfT App t -A 7 f ~7 
