A HISTORY OF SUFFOLK B. PELECYPODA Dreissensia polymorpha (Pall.). Breydon Vnio pictorum (Linn.). Gt. Fakenham ; near Mildenhall ; near Oulton Broad Anodonta cygnaea (Linn.). Local, but widely distributed Sphaerium corneum (Linn.). Common — lacuitre (Mull.). Gt. Fakenham; Wal- sham-le-Willows ; Mildenhall ; Barton Mere ; Sudbury ; Mendlesham Piiidium amnicum (MqU.). Widely distributed Pisidium Henslowianum (Shepp.). Mildenhall; Needham Market — suhtruncatum, Malm. Mildenhall — pulchellum, Jenyns. Mildenhall — obtusale, Pfr. Wyverstone ; Mendlesham ; Lowestoft — nltidum, Jenyns. Wetherden ; Mendles- sham ; Mildenhall — Gassiesianum, Dupuy. Santon Downham j Lowestoft NOTE Since the compilation of the above list a flourishing colony of Helisi pomatta has been discovered in a large chalk pit at Rickinghall in the north of the county. 100
