232 Heports and Proceedings. 



tion to the section at Belangh (mentioned by Mr. Samuel "Woodward 

 in his " Geology of Norfolk"), a mile distant from Horstead and 

 Coltishall ; and since then, having found that it presented such a 

 different aspect, palseontologically, to the Norwich and Chillesford 

 Crags, and such a resemblance to that of Weybourne, which extends 

 along the base of the cliffs near Cromer, Mr. Wood, sen., has sifted 

 a large quantity of material obtained from Belaugh, and the result 

 proves it to belong to the newer deposit ; and, with this conclusion, 

 the stratigraphical evidence seems completely to concur. 



Mr. S. V. Wood, Jun., has for some years maintained that the Crag 

 at Weybourne (full of Tellina soUdula) had no identity with the 

 Norwich Crag. As this bed is often referred to by geologists as 

 identical with the Norwich Crag, the author felt it important that the 

 matter should be thoroughly investigated, and, the cause of con- 

 fusion to all, and of error to one side or the other, removed. 



The shells obtained from Belaugh and Weybourne, and identified 

 by Mr. S. V. Wood, Sen., are as follows : — 

 Mytilus eduHs. 

 Tellina solidula (or Balthica). 

 Tellina lata (or calcarea^. 

 Tellina obliqua, 

 Donax anatinus. 

 Cyprina Jslandica. 

 Scrobicularia piperata. 

 Leda limatula. 

 Cardium edule. 

 Cardium Grcenlandicum. 

 Macta ovata. 

 Mya truncata. 



To these have since been added 



Nucula Cobboldice. 



Astarte borealis. 



Astarte compressa. 



Tellina prcetenuis (very rare). 



Lucina borealis. 



The important peculiarity of this fauna is the profusion, both at 

 Belaugh and Weybourne, of the Tellina solidula. which does not 

 exist either in the Norwich or Chillesford Crag. This shell, which 

 is now extremely common on our coasts, and in the higher latitudes 

 throughout the whole Northern Hemisphere, literally swarms in these 

 beds, as it always does wherever it is found ; a handful of shells 

 gathered at random either on Yarmouth beach, or in the Weybourne 

 or Belaugh bed, consisting principally of it. It is also found 

 throughout the whole Glacial Series, being common to the Till, the 

 contorted drift, the middle Glacial sands, and the upper Glacial 

 deposits at Bridlington. It also occurs in the Post-glacial deposits of 

 the Nar Valley and of Kelsea Hill, in Yorkshire. Its first occurrence 

 seems to mark a well-defined geological horizon, and it is that which 

 Mr. Wood has adopted, as dividing the Glacial series from the Crag ; 

 the lower Glacial beginning with the Belaugh and Weybourne beds. 



All the rest of the shells found (with the exception of a univalve, 

 not yet identified,) are forms occurring in the Crag, but they consist 

 principally of the more boreal forms of the Crag MoUusca, some 



Mya arenaria. 

 Saxicava rugosa. 

 FJiolas crispata. 

 Corbula nucleus. 

 Scalaria Grcenlandica. 

 Purpura crispata, 

 Liitorina littorea. 

 Littorina rudis. 

 Natica catena. 

 Natica helicoides. 



Pinna (probably pectinata), and a 

 Jialanus. 



Anomia striata. 

 Anatina phaseolina. 

 Fusus striatus and 



Trophon antiquum, both dextral and 

 sinistral varieties. 



