Vol XXviii.] PALEONTOLOGY OF LANCASHIRE COAL MEASURES. 389 



Posidoniella minor. 



This species is a smaller form than the last and often 

 confounded with it, and has an equally wide range. 



Eoof of Mountain Four Feet, at Trawden, near Colne. 

 (W 629, e coll. Wild, M.M.) 



In shale above the Upper Rough Eock at Tower Clough, 

 Cliviger. Collected by the Author, and e. coll. Dugdale, 

 M.M. 



Eoof of Bullion or Upper Foot seam, Heighters Hey, near 

 Sharneyford. (e coll. Dugdale, M.M.) 



In shales below the Old Lawrence or Tumbling Cob rock, 

 and above the Gannister or Lower Mountain Mine at Heighters 

 Hey, near Sharneyford. ' Collected by the Author. 



Eoof of Bullion or Upper Foot Seam throughout Eossen- 

 dale. Collected by the Author, and collections in the 

 Museum of the Bacup Natural History Society. 



Fosidoniella subquadrata. 



This species is very rare, and so far is only recorded from 

 two Lancashire localities. As the shales at these localities 

 are very f ossilif erous, careful search will almost certainly 

 result in the finding of more. 



Eoof of Mountain and Four Foot Seam at Colne. 



Eoof of Bullion or Upper Foot Seam at New Hey, near 

 Eochdale. (P 1779 e coll. Dawkins, M.M.) 



Eoof of Bullion Seam at Dearnley, near Eochdale. 

 (Dr. Hind, op. cit., p. lOL) , \ 



Posidoniella laevigata. 



As Posidonia laevigata recorded by Salter from above the 

 Bullion Coal at Sholver, two miles north-east of Oldham. 

 (Salter. Geol. Mem. Surv., Geology of the Country around 

 Oldham, p. 62.) 



