{[wuaireaves] : FOSSIL FISHES OF THE DEVONIAN ROCKS 285 
In the Geological Magazine for January, 1890, Dr. Traquair pointed 
out, (1) that the portion of the side of the head of a specimen that 
was inadvertently referred by the writer to Phaneropleuron curtum, 
in the Transactions of this Society for 1888 (vol. vi, sect. iv, p. 91, 
pl. x, fig. 1), is really referable to Husthenopteron F'oordi; and (2) that 
the wedge-shaped plates round the eye of this and other specimens of 
FE. Foordi, are sclerotic plates and not cireumorbitals. If this latter 
view be correct, Dr. Traquair adds, “ we have in Husthenopteron a con- 
dition almost unique among fishes, for though sclerotic ossifications are 
not uncommon amongst them, in no fish except certain Cælacanths do 
they assume the form of a continuous ring of quadrangular plates, as 
they do in certain birds and lizards, and in extinct Ichthyosauria and 
Stegocephala.” 
(11). CHETROLEPIS CANADENSIS, Whiteaves. 
Cheirolepis Canadensis. Whiteaves. 1881. Canad. Nat. & Quart. Journ. Se. 
vol. 10, no. 1, p. 33; and (1889) Trans. Roy. Soc. 
Canada for 1888, vol. v, sect. iv, p. 90, pl. viii. 
% # A. Smith Woodward. 1891. Cat. Foss. Fishes Brit. 
Mus:, pt. ii, p. 457, 
Type.—An imperfect fish in the Museum of the Geological Survey 
at Ottawa. 
“ A larger species than °C. Trailli, closely similar in proportions, 
but differing in the more advanced position of the pelvic fins and the 
more remote situation of the dorsal. Scales and joints of fin-rays 
pectinated.”—A. S. Woodward, op. cit. supra. 
B.—Revised list of the fossil fishes of the Lower Devonian 
rocks at Campbellton, N.B. 
SUB-CLASS I. SELACHII. 
Genus Proropus, Woodward. 
Pro‘odus, A. Smith Woodward. 1852. eol. Mag., dec. 3, vol. viii, p. 1. 
“ A genus known only by detached teeth. Dental crown consisting 
of a single robust, solid, conical cusp, invested with gano-dentine ; roc! 
large, undivided, laterally expanded, and antero-posteriorly compressed. 
“That the tooth thus defined is not the laniary of a Crossoptery- 
gian attached to its basal bone is proved by the examination of a 
microscopical section, which leaves little doubt as to its elasmobranch 
relationships. Protodus is thus the earliest tooth referable to the 
