wellburn : fish fauna of lower carboniferous rocks. 387 
Family Osteolepid^. 
Genus Megalichthys Agassiz, Pois. Foss., vol. iii., pp. 89, 154. 
J/. Hibberti Agassiz, I.e., p. 89. 
Jaw, Teeth, and Scales : York Mus. and Mr. Home's col. 
(Laburn). 
Form and Loc: Carbonif. limestones, Wensleydale. 
Family Pal^oniscid.^:. 
Genus Elonichthys Giebel, Faun, der Vorwelt Fische, p. 249, 
1848. 
E. Aitkcni Traquair, Geol. Mag. (3), vol. iii., p. 440. 
Scale : Author's col. 
Form and Loc: Carbonif. limestones (Crow), Laburn ' 
Family Platysonid^. 
Genus Cheirodus M'Coy, Arm. Mag. Nat. Hist., vol. ii., 
p. 130, 1848. 
Syn.: Heinicladodus Davis, Quart. Jour. Geol. Soc, vol. xl., 
p. 620 
Cheirodus sp. ? 
Syn.: H. uniciispidatiis Davis, I.e., p. 620. 
Pterygoid or Splenial Bones : York Mus. 
Form and Loc: Carbonif. limestones, Wensleydale and 
Richmond. 
