r 
10 ACAXTHODJI. 
P. 4058. Imperfect pectoral fin-spine and scattered scales ; Eskdale. 
Purchased , 1883. 
P. 5979. Greater portion of a smaller fish, preserved in counterpart, 
with indications of slender calcified neural arches; 
Eskdale. Purchased , 1889. 
A fragment of squamation from the Calciferous Sandstones of 
Wardie, near Edinburgh, is named Acanthodes sulcatus, L. Agassiz, 
Poiss. Eoss. vol. ii. pt. i. (1835) p. 125, pi. i c. figs. 1, 2. The 
specimen is preserved in the University Museum, Oxford, and must 
be regarded as specifically indeterminable. Under the same name, 
however, more satisfactory Acanthodian fossils have been briefly 
noticed by R. H. Traquair (Proc. Eoy. Soc. Edinb. 1890, p. 392) 
from the Calciferous Sandstones of several localities in Eife and the 
Lothians, these being regarded as distinguishable from A. wardi 
only by “ a somewhat greater straightness and slenderness of the 
‘ styliform ’ bone.” 
Acanthodes pygmaeus, Eritsch. 
1875. Acanthodespygmceus, A. Fritsch, Sitzungsb. k. bohm. Ges. Wiss. 
p. 74. 
Type. Nearly complete fish ; Eoyal Bohemian Museum, Prague. 
A small species, about 0’08 in length, not yet defined, but to be 
described in a forthcoming part'of Eritsch’s ‘ Fauna der Gaskohle.’ 
The scales are relatively large and smooth, and the median fin- 
spines long and slender. 
Form. Sf Loc. Lower Permian : Bohemia. 
P. 4157. Imperfect caudal region, showing dorsal and anal fin- 
spines, labelled by Prof. Dr. E. Roemer ; Nyran, near 
Pilsen. Enniskillen Coll. 
Acanthodes concinnus, Whiteaves. 
1887. Acanthodes concinnus, J. F. Whiteaves, Trans. Roy. Soc. Canada, 
vol. iv. sect. iv. p. 107, pi. x. fig. 1. 
1889. Acanthodes concinnus , J. F. Whiteaves, ibid. vol. vi. sect. iv. 
pi. v. fig. 2. 
1890. Acanthodes concinnus , R. H. Traquair, Geol. Mag. [3] vol. vii. 
p. 16. 
Type. Imperfect fish ; Geological Survey of Canada, Ottawa. 
A small species, attaining a maximum length of about 0G5 ; 
head occupying approximately one sixth of the total length. Fin- 
spines short and slender in proportion to the size of the fish, each 
