49 



NORFOLK MARINE MOLLUSCA. 



By ARTHUR MAYFIELD. 



(Read Iiefore the Society, Dec. 12, 1900). 



The sandy shores of Norfolk are not, by any means, a happy hunting- 

 ground for the collector of marine molluscs. The best localities are : 

 r. The AVash. 



2. The shore from W'clls-next-the-Sea to Hunstanton, where dead 

 shells are thrown up amongst the drift rubbish in great abundance, 

 but little variety. 



3. The neighbourhood of Cromer, Runton, and Sheringham, where 

 the chalk and flints form the beach between high- and low-water 

 marks. 



4. Breydon Water, a shallow brackish lake occupying 1,200 acres. 

 Along the eastern shores of East Anglia, from Palling-on-Sea to 



Felixstowe, there is a remarkable paucity of drift shells, doubtless owing 

 to the rarity of easterly gales. 



In the following list records marked "B." and "H." are given on 

 the authority of Mr. J. B. Beckett, of Gorleston, Great Yarmouth, and 

 Mr. F. W. Harmer, F.G.S., of Cringleford, Norwich, respectively. To 

 these gentlemen my sincere thanks are due for allowing me to quote 

 from their papers on this subject. There are also in Mr. Harmer's 

 list some records which are the result of dredging operations made in 

 1870 by Captain Calver, of H.M.S. ^^ Porcupine" in "Lynn Deeps." 

 These were sent to Mr. Harmer by Mr. Gwyn Jeffreys, and are herein 

 indicated by the initial "J." 



LIST OF SPECIES. 



AMPHINEURA. 



Craspedochilits onyx (Spengl. ) \_ = Chiton 

 cmeret(s\ Yarmouth (B.). 



C.cineteus (L. ) \_—C. inarginatns\ com- 

 mon. 



PELECYPODA. 



Niicula niuleus (L. ), common. 



N. nitida G. B. Sow., rare (H.). 



Nuculana minuta (Miill.), rare (H. ). 



Anomia ephippium L. , common. 

 V. aculeata Miill., The Wash (J.). 



Barbatia lactea (L.), rare (H.). 



Mytilus edulis L. , common. 



Modiolus modiolus (L.), common. 



M. barbatus (L.), rare (H.). 



Modiolaria juarmorata (Forb. ), The 

 Wash (J.). 



AI. discers (L. ), common. 



M. discrepans (Leach), rare (H.). 



Ostrea ednlis L., common. 



Pecten varins (L. ), common. 



V. nivea Macgill, rare (H.). 

 P. opercularis {L,.),ra.re. 

 Goodallia triangularis (Mont. ), rare (H. ). 

 Arctica islandica (L. ), fragments, Holk- 



ham. 

 Loripes lacteus (L. ), Yarmouth (B. ). 

 Lucina barealis (L.), rare (H.). 

 Montcuuta bidentata (Mont.), Yarmouth 



(B.). 

 Kelha stiborbtcularis (Mont. ), The Wash 



(J.). 

 Syndosmya nittda (Miill. ), Yarmouth (B. ). 

 6". alba (Wood), frequent. 

 Serobicularia plana (daC. ), plentiful. 

 Tellina donacina L., rare (H.). 

 T. tenuis (daC. ), plentiful. 

 T. fabula Gronov., rare (H.). 

 T. pusilla Phil., The Wash (J.). 

 Macoma bait hi (a (L. ), common. 



D 



