604 MR. H. BOLTON, F.R.S.E., ON [Juiie, 1904. 



Pisces. 



Fishes may be said to have dominated the Middle Coal 

 Measure period, as no less than 40 species are known, 

 belonging to 25 genera. 



The Lower Coal Measures have only yielded 17 species 

 belonging to 13 genera, and of thes3 no less than 12 species 

 and 10 genera live on into the Middle Coal Measures. 



A remarkable feature in connection with the occurrence 



of fish remains is their prevalence in the roof shales of coal 



seams, or in the case of Cannel, in the coal itself. Wherever 



a black shale lies upon a coal seam, there fish teeth and 



scales may be looked for with a considerable likelihood of 



success. Yery rarely are fishes found whole, more usually 



they are represented by teeth, isolated scales and defensive 



spines. 



Diplodus gihhosus (Binney). 



From 400-500 yards deep at Ashton Moss Colliery, 

 Audenshaw. (L. 2591 and L. 2599, e. coll. Cairns, M.M.) 



From Fulledge Colliery, Burnley. Horizon not known. 

 (e. coll. Kay-Shuttleworth, M.M.) 



From the Cannel Seam of Wigan. (e. coll. Bowman, 

 M.M.) 



From the Middle Coal Measures of Peel, Little Hulton. 

 Horizon not known (M.M.) 



From the Calif ornian or Thin Bed of Fulledge Colliery, 

 Burnley. (W. 907 and 902, e. coll. Wild, M.M.) 



From shale below the Stubbs Mine at Bardsley. (W. 

 901, e. coll. Wild, M.M.) 



From eight yards above the Old Mine at Bardsley. (W. 

 904, e. coll. Wild, M.M.) 



From the Meld Mine of Glodwick, Oldham. (W. 1203, 

 e. coll. Wild, M.M.) 



From Bispham Colliery. (Salter, Geol. Survey. Geology 

 of the Country around Wigan, p. 35.) 



