266 
SELACHII. 
P. 2792, P. 2794. Seventeen teeth, two having the central eminence 
cleft, and two with the crown divided near one extremity 
(PI. IX. fig. 3)X> 2-9^4 j Enniskillen Call. 
Hybodus reticulatus, Agassiz. 
1822. Fossil jaw with a triple row of teeth, H. T. De la Beche, Trans. 
Geol. Soc. [2] vol. i. p. 44, pi. v. fig. 3. 
1837-43. Hybodus reticulcitus , L. Agassiz, Poiss. Foss. vol. iii. pp. 50, 
180, pi. ix. figs. 1-9 l , pi. xxiv. fig. 26, pi. xxii. a. fi gs. 22, 23, ^ 
(?) 1837. Hybodus formosus , L. Agassiz, tom. cit. p. 51, pi. ix. figs. 10,1L \ 
Tigpe. Associated teeth, cartilage, and dorsal spines; Oxford J 
Museum. 
Teeth narrow, with a relatively high crown, the median eminence 
and all the lateral cones slender and sharply pointed; superficial 
coronal wrinkles fine and numerous, often not extending to the 
apex. In the anterior and principal teeth, the height of the median 
eminence is often equal to two-thirds or even three-quarters of the 
long diameter of the tooth ; and this cone is almost invariably much 
bent both backwards and laterally. The root is of very loose 
texture. 
Form. Sf Loc. Lower Lias: Lyme Regis, Dorsetshire. 
P. 3163. Crushed head, showing the partially distorted outlines of 
one pterygo-quadrate cartilage and a number of scattered 
teeth. Enniskillen Coll. 
40335. Portion of crushed head, showing shagreen and a few of 
the anterior teeth. Some of the teeth (PI. X. figs. 16-18) 
are of a more prehensile character than any figured by 
Agassiz. Purchased , 1867. 
P. 2198. Small specimen of associated cartilage, shagreen, and 
teeth. Egerton Coll. 
P. 2198 a. Portions of the cartilages of the jaws, associated with a 
few teeth, and one “ Eplienonehus.” Egerton Coll. 
P. 2198 b. Two groups of teeth. Egerton Coll. 
P. 2203 a. Fragmentary teeth associated with two “ Sphenonchi.” 
Egerton Coll. 
P. 2203 b. Three broken teeth, associated with fragments of sha¬ 
green and two “ Sphenonchi.” Egerton Coll. 
1 Some of these spines may pertain to Aerodus. 
