390 THE ZOOLOGIST. 



" from mud thrown out of a ditch in the level of the Arun 

 between Burpham and Arundel" (W. Borrer). 



Uniopictorum, Linne\ — Widely distributed. 



U. tumidiis, Eetzius. — Very local. Ouse, Cuckmere, and East 

 Bother districts (Jenner) ; Hastings district (Hastings Phil. Soc); 

 in the muddy bottom of the Brede Biver, abundant (B. Tate). 



Anodonta cygncsa, Linne. — Widely distributed. 



Var. anatina, Linne. — Sometimes classed as a species. 

 " Burton and Wisboro' Green, have taken the var. complanata at 

 Burton (W. Jeffery) ; Cowdray Park (D. Taylor) ; Landport, near 

 Lewes (Jenner) ; Plumpton and Norlington (C. H. Morris) ; 

 Pevensey Sluice (Eastbourne Nat. Hist. Soc); Crowhurst and 

 Bobertsbridge (Hastings Phil. Soc). 



Var. incrassata, Sheppard. — Powder Mill, Battle (Jenner). 

 Specimens in the Hastings Museum were obtained from this 

 locality by Mr. E. J. Bailey. 



Corbicula fluminalis, Miiller. — It has been recorded by Mr. 

 J. P. Johnson from the Pleistocene at West Wittering. A widely 

 distributed fossil on the Continent ; in Britain not known out- 

 side of the Thames-Bhine system. 



Spharium rivicola, Leach. — Sluggish rivers and streams. 

 Bare in Sussex. Near Hastings, rare (Bev. E. N. Bloomfield) ; 

 Arun at Burpham, near Arundel (W. Borrer). 



S. corneum, Linne. — Generally distributed in ponds and 

 ditches. 



Var. nucleus, Studer. — Lewes Marshes (J. H. A. Jenner). 



Var. flavescens, Macgillivray. — Millstream at Burton, near 

 Petworth (W. Jeffery) ; Cockshute, Lewes (C. H. Morris). 



S. lacustre, Miiller. — Widely distributed. 



Var. brochoniana, Bourguignat. — Botham, near Chichester 

 (W. Jeffery). 



Var. ovalis Ferussac — Landport Marshes, near Lewes (J. H. 

 A. Jenner). 



Pisidium amnicum, Miiller. — Common in lakes, ponds, rivers, 

 and canals. 



P. henslowianum, Sheppard. — Ponds, ditches, and sluggish 

 streams ; apparently rare. Lewes Levels (W. C. Unwin) ; North- 

 chapel (D. Taylor) ; Surrey and Sussex Canal, near Alfold 

 (E. W. S.). 



