AT BRACKLESHAM BAY, SUSSEX. 25 



my visit, was opened for about fifty yards, I found Sanguin- 

 olaria Hollowasii, a rare and fragile, but very beautiful shell, 

 in a fine state of preservation. At about twenty or thirty 

 yards westward of the western end of this interesting patch of 

 shells there are large blocks of this bed, which, being of a 

 firmer texture than the surrounding parts of the deposit, have 

 suffered less from the action of the water, and project about 

 twelve or eighteen inches above the surrounding sand, and, 

 by presenting an obstruction to the ebbing tide, they usually 

 induce the formation ol" a small pool amidst which they 

 stand. At the south-eastern side of this pool, on one occa- 

 sion I found the stratum, which is usually covered by the 

 sand, completely exposed. At this spot there was scarcely 

 a specimen of Venericardia planicosta to be seen, but in- 

 stead of this shell, Turritella conoidea and edita were em- 

 bedded in a dark green marly sand ; and among them, toge- 

 ther with Fusus longmvus, and other well-known London- 

 clay shells, I found Venericardia acuticostata and mitis, and 

 a splendid specimen of Conus deperditus, fully equal in size 

 to the one figured by Deshayes. Westward of this point I 

 did not meet with anything particularly interesting. 



Proceeding eastward from this locality, I found, at about 

 midway between high and low water mark, Cerithium Cornu- 

 copicBy a Corhula, which I believe to be Corh. gallica, Cythe- 

 rea trigonula and sulcatarea, and a new species which I 

 cannot find in Deshayes' work ; and also Area duplicata and 

 a new species of Crassatella. 



About midway between Bracklesham bam and the Thomey 

 coast-guard station a series of patches of a deposit of chalk- 

 flints was exposed : the first of these was nearly at low water 

 mark, and the remainder of them ran, at short distances from 

 each other, in a diagonal line towards the coast, nearly in the 

 direction of a straight line drawn from their western extremity 

 to the Thomey station houses. Apparently, this stratum of 

 flints has not, at any time, exceeded eight inches or a foot in 

 thickness, they are indeed so thinly scattered as rarely to oc- 

 cur piled upon each other : very few of them have suffered 

 from attrition, and the greater part retain their original form 

 and whitened surface. They are firmly embedded in the same 

 light green marly sand, which I before described as occurring 

 at the bottom of the London clay, in the neighbourhood of 

 the little chine near Bracklesham bam. Amongst the flints 

 there are numerous remains of the roots of trees, in the state 

 of soft bog-wood; which indicate that this portion of the 

 strata has been very thinly covered by the superimposed clay. 



Vol. IV.— No. 37, n. s. e 



