304 
SELACHII. 
28447. A nearly perfect similar spine, the exserted portion measuring 
0*08 in length, and exhibiting very prominent lines of 
growth. Cunnington Coll. 
44847. More slender nearly perfect spine, of the same type, the 
exserted portion measuring 0*067 in length. 
Presented by Benjamin Bright , Esq., 1873. 
48375. Short small spine, probably of the same species. 
Purchased, 1877. 
P. 2170. A very typical spine of H. strictus. Egerton Coll. 
P. 2835. Three nearly perfect similar spines, and one less complete. 
Enniskillen Coll. 
P. 2836. Basal half of a slightly larger specimen. 
^ Enniskillen Coll. 
P. 2837. S mailer imperfect spine, probably young. 
Enniskillen Coll. 
(b) Cephalic Spine. 
P. 2^ Exserted portion, and fragment of the base of a cephalic 
spine. Egerton Coll. 
VII. V'ealdex. (a) Dorsal Fin-spines. 
2686, 2689. Type specimens of Hybodus striatulus , Agassiz, Poiss. 
Foss. voi. iii. (1837), p. 44, pi. viii. b. fig. 1, the largest 
described as the dorsal fin of a fish allied to Silurus , in 
Mantell’s Foss. Tilgate Forest (1827), p. 58, pi. x. fig. 4; 
Tilgate Forest, Sussex. Mantell Coll. 
2686 a, 2687, 2689 a, 2703, 2708. Five fragmentary spines, referable 
to Hybodus subcarinatus , Agassiz 1 ; Tilgate Forest. 
Mantell Coll. 
26036, 28418, 28421. Abraded nearly complete specimen, and two 
fragments of similar spines ; Tilgate Forest. 
Mantell Coll. 
P. 4992. Incomplete spine ; St. Leonards, Sussex. 
Presented by J. E. Lee, Esq., 1885. 
P. 4318. Two fragmentary similar spines; Hastings. 
Dawson Coll. 
1 Poiss. Foss. vol. iii. (1837), p. 46, pi. x. figs. 10-12. See also figure in 
Trans. Geol. Soc. [2] vol. ii. (1829), pi. vi. fig. 9. 
