138 
ACTINOPTERYGII. 
quarter of the total length of the fish; the external bones orna¬ 
mented with numerous coarse, rounded tuberculations not fused 
into rugae. Marginal teeth very stout and obtuse, the majority 
slightly bifid. Scales comparatively thick and nearly smooth, with 
few sparse punctations and extremely delicate transverse striae ; 
hinder border not serrated. 
Form. Sf Log. Lower Lias : Leicestershire. 
The following specimens were all obtained from Barrow-on-Soar:— 
P. 7423-24. Two fine large specimens, much fractured but exhibit¬ 
ing the principal characters of the species. Purchased. 
P. 7425. A smaller more imperfect fish displaying one of the pelvic 
fins and some teeth. Purchased. 
P. 7426. Very imperfectly preserved head and trunk with traces of 
the fins. Part of the dentition is conspicuous, the tubercles 
on some of the head-bones are shown in impression, and 
a few of the haemal spines are exposed at the base of the 
caudal fin. Purchased. 
P. 3549-a. Two small specimens, the second wanting the caudal fin 
and the greater part of the head, but displaying the orna¬ 
ment on some of the suborbital and opercular bones, many 
well-preserved scales, and the dorsal and anal fins. 
Enniskillen Coll. 
18789. Portion of small head and trunk showing the depth of the 
dorsal fin. Purchased , 1845. 
Dapedms dorsalis (Agassiz). 
1836. Tetragonolepis dorsalis, L. Agassiz, Poiss. Foss. vol. ii. pt. i. p. 211, 
pi. xxi. figs. 1, 2, pi. xxi. a. fig. 1. 
1836. Tetragonolepis monilifer , L. Agassiz, ibid . p. 212, pi. xxi. a. 
figs. 2-5. [Fish, wanting head ; Bristol Museum.] 
1844. Tetragonolepis striolatus, L. Agassiz, ibid. p. 304 (name only). 
[British Museum.] 
1854. jEchmodus dorsalis, J. Morris, Catal. Brit. Foss. p. 316. 
1854. Eapedius monilifer, J. Morris, ibid. p. 324. 
1890. Eapedius dorsalis, Woodward & Sherborn, Catal. Brit. Foss. 
Vertebrata, p. 58. 
1890. Eapedius monilifer, Woodward & Sherborn, ibid. p. 59. 
1890. Eapedius dorsalis, M. Browne, Trans. Leicester Lit. & Phil. Soc. 
n. s., vol. ii. p. 202. 
Type. Nearly complete fish; British Museum. 
