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 MOLLUSCS Vitrea pura (Aid.) — radiatula (Aid.) — excavata (Bean). St. Leonards Forest ; Midhurst ; near Piplye — nitida (Mull.) — fulva (Mull.) Arion ater (Linn.) — hortensh, Fdr. — circumscriptus, John. | ^^^^ g^^^^^ — subfuscus (Drap.) ) Punctum pygmaum (Drap.) Pyramidula rupestrh (Drap.) — rotundata (Mull.) Helkella virgata (Da C.) — Itala (Linn.) — caperata (Mont.) — barbara (Linn.) Rare ; it was found at Eastbourne on a spot now built over — cantiana (Mont.) — cartuiiana (Miill.) Hygromia fusca (Moat.) Warrengrove and Warrinson Wood, near Lewes — granulata (Aid.) — htspida (Linn.) — rufescens (Penn.) Acanthinula aculeata (Moll.) Vallonla pulchella (Mull.) HeUcodonta obvoluta (Mull.) Up Park ; Graffham ; Storington ; Dunston ; Singleton, etc. Helkigona lapicida (Linn.) — arhustorum (Linn.) Helix aspersa. Mull. — nemora/is, Linn. — hortemis. Mull. Bul'iminus obscurus (Mull.) Cochlicopa lubrica (Moll.) A%eca tr'idem (Pult.) Ccecilianella acicula (Miill.) Pupa secale, Drap. — cylindracea (Da C.) — muscorum (Linn.) Sphy radium edentulum (Drap.) Vertigo antivertigo (Drap.) Lewes levels ; Eastbourne — pygfnaa (Drap.) Balea perversa (Linn.) Clausilia laminata (Mont.) — hidentata (Strom.) Clauiilia rolphii. Gray Succinea putris (Linn.) — e/egans, Risso. b. Basommatophora Carychium minimum. Mall. Melampus denticulatus (Mont.) Newhaven Alexia myosotii{}x^^.) Hastings; Newhaven; Shoreham Ancylus fluviatilis, MUll. VeUetia lacustris (Linn.) Limnaa auricularia (Linn.) — pereger (Mull.) — paluitrii (Mull.) — trimcatula (Miill.) — stagnalis (Linn.) — ghibra (Miill.) Near Mailing ; Hastings ; near Brighton ; Horsted Keynes Planorbis corneus (Linn.) — albus. Mull. — glaber, JefF. West Sussex — nautileus (Linn.) — carinatus. Mull. — marginatus, Drap. — vortex (Linn.) — spirorbis, Mull. — contortus (Linn.) — fontanus (Lightf.) — lineatus (Walker) Phyia fontinalii (Linn.) — hypnorum (Linn.) IL PROSOBRANCHIATA Paludestrina jenkinsi (Smith). Near Lewes — stagnalis (Bast.) Hastings Bithynia tentaculata (Linn.) The type is common ; but near Pevensey Mr. P. RufFord has obtained an interesting variety which is prettily marked with raised longitudinal brown stripes or bars — leachii (Shepp.) Pevensey level ; river Arun Vivipara vivipara (Linn.) Valvata piicinalis (Mull.) — crista ta, Mull. Pomatias elegans (Mali.) Acicula lineata (Drap.) Fairlight Glen ; Cog- hurst Wood Neritina fluviatilis (Linn.) B. PELECYPODA Unio pictorum (Linn.) — tumidus, Retz. Anodonta cygncea (Linn.) Spharium rivicola (Leach). Near Hastings, dead shells only — corneum (Linn.) — ovale (Fer.) Near Lewes, one specimen. — lacustre (Mall.) Pisidium amnicum (MUll.) — pusillum (Gmel.) — nitidum, Jenyns. Near Lewes ; Hastings ; Guestling ; Chidham — fontinale (Drap.) In addition to the type the variety P. henslowianum occurs at Pevensey Marsh — milium (Held.) Hastings 109