A HISTORY OF BERKSHIRE Wellington ; Streatley Wellington Vitrea pura (Aid.) radiatula (Aid.). excavata (Bean). nltida (Mull.) fufaa (MQll.) Anon ater (Linn.) hortenstS) FeV. circumscriptus, John. Near Oxford Punctum pygmeeum (Drap.) Pyramidula rupestris (Drap.). Sandford rotundata (Mall.) Helicella virgata (Da C.). Streatley ; Cum- nor ; etc. itala (Linn.) caperata (Mont.) cantiana (Mont.) Hygromia granulata (Aid.) hispida (Linn.) rufescens (Penn.) Acanthinula aculeata (Mtill.) lamellata QefF.). Theale Lock, near Reading Vallonia pulckella (Mull.) Helicigona lapicida (Linn.) arbustorum (Linn.) Helix aspersa, Mull. nemora/is, Linn. hartensts, Mull. Buliminus obscurus (Mttll.) Cochlicopa lubrica (Moll.) Ciecilianella adcula (Mtlll.) Streatley Pupa secale, Drap. Unhill, near Streatley cylindracea (Da C.) muscorum (Linn.) Sphyradium edentulum (Drap.) Vertigo antivertigo (Drap.) pygm&tf (Drap.) Eaka peruersa (Linn.) Clausilia laminata (Mont.) bidentata (Strom.) rolphii, Gray. Newbury ; S. Hinksey ; Sulham Succinea putris (Linn.) elegans, Risso. Near Reading b. BASOMMATOPHORA Carychium minimum, Mttll. Ancylus fluviatilh, Mtlll. Velletia lacustris (Linn.) Limntsa auricularia (Linn.) pereger (Mull.) palustris (Mtlll.) truncatula (Mtlll.) stagnalis (Linn.) glabra (Mtill.). Ditch near Kennington Amphipeplea g/utinosa (Mtlll.). Near Reading Planorbis corneus (Linn.) - albus, Mtlll. glaber, JefF. Wellington ; Bulmershe Park, near Reading nautileus (Linn.). Bulmershe Park, near Reading ; Chieveley - carinatus, Mtlll. marginals, Drap. vortex (Linn.) spirorbis, Mtlll. contortus (Linn.) fontanus (Lightf.). Wellington ; Bul- mershe Park, near Reading Physa fontinalii (Linn.) hypnorum (Linn.). Near Reading, Ken- nington II. PROSOBRANCHIATA Bithynia tentaculata (Linn.) leachii (Shepp.). Near Reading Vivipara vivipara (Linn.) contecta (Millett) Valvata piscina/is (Mtlll.) - cristata, Mtlll. Pomatias elegans (Mtlll.) Neritina ftuviatilis (Linn.) B. PELECYPODA Dreissemia polymorpha (Pall.) Unto pictorum (Linn.) tumidus, Retz. Anodonta cygntea (Linn.) Sphterium rivicola (Leach) corneum (Linn.) Sphisrium lacustre (Mull.). Near Reading Pisidium amnicum (Milll.) puiillum (Gmel.). Near Reading nitidium, Jenyns. fontinale (Drap.) 70
