﻿10 ACAOTHODII. 



P. 4058. Imperfect pectoral tin-spine and scattered scales ; Eskdale. 



Purchased, 1883. 



P. 5979. Greater portion of a smaller fish, preserved in counterpart, 

 with indications of slender calcined neural arches ; 

 Eskdale. Purchased, 1889. 



A fragment of squamation from the Calciferous Sandstones of 

 Wardie, near Edinburgh, is named Acanthodes sulcatus, L. Agassiz, 

 Pois8. Foss. 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. Roy. Soc. Edinb. 1890, p. 392) 

 from the Calciferous Sandstones of several localities in Fife and the 

 Lothian s, these being regarded as distinguishable from A. wardi 

 only by " a somewhat greater straightness and slenderness of the 

 ' styliform ' bone." 



Acanthodes pygmseus, Fritsch. 



1875. Acanthodes pygmceus, A. Fritsch, Sitzungsb. k. bohm. Ges. Wiss. 

 p. 74. 



Type. Nearly complete fish ; Royal Bohemian Museum, Prague. 



A small species, about 0"08 in length, not yet defined, but to be 

 described in a forthcoming part of Fritsch's ' Fauna der Gaskohle.' 

 The scales are relatively large and smooth, and the median fin- 

 spines long and slender. 



Form. &f Loc. Lower Permian : Bohemia. 



P. 4157. Imperfect caudal region, showing dorsal and anal fin- 

 spines, labelled by Prof. Dr. F. Roemer ; Nyfan, 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. Aca?ithodes 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 0-15 ; 

 head occupying approximately one sixth of the total length. Fin- 

 spines short and slender in proportion to the size of the fish, each 





