CEPHALASPID-E. 
183 
Shield sharply rounded in front, broad, and characterized by the 
peculiar curvature of the outline (fig. 22) ; orbits placed nearly mid¬ 
way between the anterior and posterior margins; cornua short, 
Pig. 22. 
Cepkalaspis powriei, Lank.—Outline of shield, after Lankester. 
broad, acute, and slightly curved inwards. Superficial tubercula- 
tions relatively small, closely and irregularly arranged. Scaly trunk 
about two and a half times as long as the shield. 
Form. § Loc. Lower Old Red Sandstone: Forfarshire and Ayr¬ 
shire. 
P. 492. Small well-preserved fish, lateral aspect, figured by Agassiz, 
tom. cit. pi. i. a. fig. 1, as C. lyelli, and noticed by Lan¬ 
kester, op. cit. p. 48; Forfarshire. Egerton Coll. 
50003. Typical shield, in counterpart; Kinbly them out, Forfarshire. 
Trevelyan Bequest. 
Gephalaspis pagei, Lankester. 
1870. Eucephalaspis pagei, E.R. Lankester, Fishes OldRed Sandst. pt. i. 
(Pal. Soc.), p. 49, pi. x. figs. 3, 4, pi. xi. fig. 4, woodc. figs. 21, 22. 
1870. Eucephalaspis asper, E. R. LankeetSr, ibid. p. 50, pi. x. fig. 5 
woodc. fig. 23. [Collection of J. Powrie, Esq,, Reswallie.] sr 
Type. Imperfect fishes; collection of J. Powrie, Esq., Reswallie. 
Shield sharply rounded in front; orbits placed nearly midway 
between the anterior and posterior margins ; cornua short, acute, 
and slightly curved inwards. Superficial ornamentation consisting 
