Yol. XXviii.] PALEONTOLOGY OF LANCASHIRE COAL MEASURES. 401 



Pisces. 



The fishes of the Lower Coal Measures are mainly 

 represented by detached scales and teeth, whole fishes being 

 extremely rare. A few have been found in the nodules 

 overlying the Mountain Four Feet seam, and fragmentary 

 remains in the ironstone nodules lying over the Bullion 

 seam. 



It is a curious fact that fish teeth, scales, &c., 

 always occur in greatest profusion in the shales lying 

 immediately upon the coal seams, and most of all in their 

 lower layers, and even upon the upper surface of the coal 

 itself. 



Possibly this can be accounted for by the conditions 

 being unfavourable to life in those waters which lay over 

 the peaty mass representing the present coal seams after their 

 subsidence. 



Hybodopsis Wardi. 



This rare species is represented by a mass of teeth and 

 six bone fragments from over the Mountain Four-Feet of 

 Colne. The specimen is in the Wild Collection (W978) 

 of the Manchester Museum. 



Only one other example is known. It is in the collection 

 of Mr. John Ward, of Longton, Staffordshire. 



Sphenacanihtis hyhodoides. 



A tooth from the Lower Coal Measures (Mountain Four- 

 Feet) of Colne is in the Wild Collection of the Manchester 

 Museum (W452). 



Acanthodes Wardi. 



This species has been found in the shales over the 

 Mountain Four Feet seam at Colne. (W1145 e coll. 

 Wild, M.M.) 



