LAND AND FRESH WATER SHELLS OF OXFORD. 201 



Paludina vivipara. Ditches and stagnant water. Common. Very large at 

 Blenheim. 



achatina. Streams. Common. Rarely with P. vivipara. The 



Cherwell, &c. 



Bithinia tentaculata. Very common. 



ventricosa. River near Godstow; in Port Meadow, but very 



sparingly ; ditch at Yarnton, but rare. 



Valvata piscinalis. Common in rivers and streams. Feny Hinksey, 

 Godstow, &c. 



cristata. River in Port Meadow; ditches at Yarnton and BuUingdon; 



rare. 



Vitrina pelluoida. Sandford ; Woodeaton. Not very common. 



Helix aspersa. Very common. 



hortensis. A vaiiety with hyaline bands, near Ferry Hinksey. 



nemoralis. Very common. 



hybrida. Not rare ; among nettles in Barton Lane. 



Pomatia. In a chalk pit between Handborough and Stonesfield. 



arhustorum. Common. A variety Avith white interior at Ferry Hinksey. 



Lapicida. Quarry at Stow^ Wood ; sparingly. Never found alive but 



in very wet weather, when it comes out on the stalks of brambles. 



pulchella. Common on walls and under stones; also the "V. Costata." 



Cantiana. Headington. Abundant. 



ftdva. Among moss at Stow Wood ; Childswell Farm. Not rare. 



aculeata. Stow Wood. Rare. Under stones in damp situations. - ■" 



granulata. Said to have been found on BuUingdon. " Zoologist." ■ 



hispida. Very common. t-vi»»S»«^ ~ 



concinna. Wytham, among damp moss. 



depilata. Not rare. Evidently both this and H. concinna are identical 



with H. hispida. rit nrAai tfU .»wrthu\v t<. 



rufescens. Common, "fhe^hite variety ifii Wo^ce^ter Coll. gardens.' ' 



virgata. Common. 



caperata. Equally common. Shotover, Cumnor, &c. 



ericetorum. BuUingdon, Woodeaton, &c. Common. 



Zonites rotundatus. Common in most places, under stones. 



umhilicatus Abundant on walls, at Woodeaton and Feny Hinksey. 



pygmceus. WaU at Woodeaton, with the above, from tlie young of 



which it differs materially, in being flatter and darker coloured. Rare. 



alliarius. Under Stow Wood ; easily recognised by the peculiar 



smell. Not rare. 



cellarius. Common. Often with the above, at Stow Wood. 



luddus. Rather rare. River bank, near Godstow. 



crystalUmis. In wet moss, at Stow Wood and Childswell Farm. 



Suceinea piitris. Common. Very tine at Iffly, in the wet meadows. 



K 2 



