FOUND NEAR BLACKPOOL. 



127 



on towards Bispham, where they dip slightly to the south, 

 appear to occupy the place of the bed of clay last described. 

 At this place they consist of beds of coarse shingle and fine 

 gravel, parted by layers of sand, scarcely to be distinguished 

 from the pebbles found on the present beach at high water 

 mark. Nearly all the stones are well rounded, and exhibit no 

 marks of strite. Most of them consist of granites, traps, and 

 slates, with some few limestones, the softer stones, doubtless^ 

 having been destroyed by the action of water. At the highest 

 part of the cliff, these beds of gravel are full 60 feet in 

 thickness. 



The greater portion of the shells hereinafter described were 

 found by me in the deposits of sand and fine gravel near 

 Bispham. Many of them are in a perfect condition, and shew 

 every appearance of not having travelled or been conveyed 

 from a distance. Most probably they lived near the place 

 where they were found. 



Mr. Thomas Glover, of Manchester, who was so kind as to 

 examine my specimens, recognised the following: — 



Univalves. 



Nassa reticulata. — Not at the present time common on the Lancashire coast. 

 Purpura lapiilus. — Common on the rocky shores of North Wales, and ocea- 



eionally washed up at Blackpool. ; 



Buccinum undalum. — Common at Blackpool. 

 Fusus Bamfiiis. — Not common on the Lancashire coast. 

 Roitellaria pes pelecani. — Occasionally washed up at Blackpool. 

 Triton erinacetis.— Coxavaow at Hilbre Island, and often washed up at Blackpool. 

 LUtorina rwdw.— Common at Blackpool. 

 Natica monilifera. — Found at Blackpool. 



Nerita liltoralis. — Common on the Lancashire coast on stones and sea weed. 

 Turritella terelra. — Common at Blackpool. 

 Dentalium entalis. — Often washed up at Blackpool. 



Bivalves. 



Venus gallina.—0&.ein occurs at Blackpool. 

 Mactra subtruncata. — Common at Blackpool. 

 Mactra solida. — Common on the Lancashire coast. 

 Cardium edule. — Very common on the sand banks. 



