- f yt. 3«y. 
4-'. 
CARCHAEIIDjE. 
f£(.s fyy* , i jsj J> kP (**-*> 
Genus GALEOCERDO, Miiller & Henle. 
[Syst. Peschreib. Plagiostom. 1841, p. 59.] 
Syn. Gale odes, J. J. Heckel, Sitzungsb. matb.-nat. Cl. k. Akad. Wiss. 
MTen, vol. xi. (1854), p. 324. 
Snout short; mouth crescent-shaped, the labial groove incon¬ 
spicuous. Spiracles minute. A pit on the tail, above and below, 
at the commencement of the caudal fin; the latter with a double 
notch. Teeth subequal in both jaws, oblique, serrated on both 
margins, with a deep notch posteriorly. 
The fossil teeth of this genus, being found detached, can often be 
only doubtfully separated from those of certain species of Car- 
charias. 
Galeocerdo contortus, Gibbes. 
1849. Galeocerdo contortus, R. W. Gibbes, Journ. Acad. Nat. Sci. 
Philad. [2] vol. i. p. 193, pi. xxv. figs. 71-74. 
Type. Detached teeth. 
A species of moderate size. Teeth very robust, with elevated 
crown ; the apex above the posterior notch elongated, produced to a 
sharp point, more or less twisted ; anterior margin arched, some¬ 
what sinuous, and finely serrated; margin below the posterior 
notch short, with comparatively small serrations. 
Form. 6f Log. Eocene : South Carolina and Alabama, U.S.A. 
Miocene : Virginia and Maryland, U.S.A. 
28100. Thirty -three teeth, some imperfect; Eocene, South Caro¬ 
lina. Purchased , 1852. 
47001. Tooth; South Carolina. Purchased, 1876. 
P. 1213. Two teeth ; South Carolina. Egerton Coll. 
P. 2347. Three teeth ; probably from South Carolina. 
Enhislcillen Coll. 
P. 4098. Six teeth ; Charleston, South Carolina. 
By exchange , 1883. 
P. 5748. Six teeth ; probably from South Carolina. 
35610. Eive teeth, more or less imperfect; Eocene, Alabama. 
Presented ly Prof. J. W. Mallet , 1859 
2349. Tooth ; Alabam a. ; Enniskillen Coll. 
P. 2348. Tooth ; Miocene, Maryland. ' Emtiskillen Coll. 
41333. Tooth; Miocene, Maryland. Purchased , 1869. 
