402 MR. H. BOLTON, F.R.s.E., ON [Feb., 1904. 



Lepracanthus colei. 



An interesting example of this fish spine from over the 

 Lower Mountain Mine (Grannister, H.B.) of Burnley is in 

 the Wild collection at the Manchester Museum. The 

 specimen possesses two rows of denticles on the hind border, 

 with the denticles of opposite sides alternating. (W958 

 e coll. Wild, M.M.) 



Gyracanthus formosus. 



From the roof of the Upper Mountain Mine at Hapton, 

 near Burnley. (L2170 e coll. Kay- Shuttle worth, M.M.) 



Listracanthus spinatus. 



This species is founded upon a spine enclosed in a " bawm- 

 pot " from the roof of the Mountain Four Feet or Bullion 

 seam, which was found by the writer in the collections of 

 the Salford Royal Museum, at Peel Park. The locality is 

 unknown, but undoubtedly Lancashire. 



A second specimen was found by the writer in the roof of 

 the Bullion mine, at Bacup. 



With the exception of an unknown species of Listracanthus 

 from the " marine band " of the Middle Coal Measures of 

 Dukinfield, these are the only recorded occurrences of the 

 genus in the English Coal Measures. 



Strepsodus sauroides. 



This species has beeA recorded from over the Lower and 

 Upper Mountain Mines of the Hapten valley, near Burnley. 



Also from the roof of the Bullion seam, Oldham. This 

 latter specimen is in the Dawkins collection of the Manchester 

 Museum. 



Rhizodopsis sauroides. 



As "Rhizodus granulatus'' this species is recorded by 

 Salter as follows : — 



