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LAND AND FRESHWATER MOLLUSCA 

 IN NORTHUMBERLAND, 



COLLECTED CHIEFLY AT CORBRIDGE-ON-TYNE AND ON 

 THE LOWER TWEED. 



Miss M. V. LEBOUR, 



Radcliffe House, Corbridge-on-Tyiie, Northumberland. 



The following- notes are the result of several years' collecting- in 

 the valley of the Tyne round about Corbridg'e and on the south 

 banks of the Tweed between Horncliff and Berwick, and 

 include some forms hitherto reg-arded as rare in Northumber- 

 land, but now shown to be abundant in some special localities. 

 The locality at which Succinea putris was found, is, however, 

 just north of Berwick, but still in England. 

 Arion ater (L. ). Very common, Corbridge. 

 Arion subfuscus (Drap.). Not common, Fell, Corbridge. 

 Limax maximus (L.). Common, Corbridge. 

 Agriolimax agrestis (L.). Common, Corbridge. 

 Vitrina pellucida (Mi'iller). Common, Corbridge, in the garden 



in damp places under roots of plants, and in woods under 



trees. Two specimens found in Aydon Dene with shell 



capable of containing- entire body. 

 Hyalinia cellaria (Mi'iller). Common, Corbridge, in the garden 



under stones and at the roots of plants. 

 Hyalinia crystallina (Mi'iller). Common, Corbridge, among 



moss and roots of plants, and under stones in the garden. 

 Hyalinia nitidula (Drap.). Very common, in moss and roots 



of plants and under stones, Corbridge. 

 Hyalinia pura (Alder). Common, in moss in old wall near 



station, Corbridge. 

 Helix rotundata (Mi'iller). Very common, Corbridge, in moss, 



roots, and under stones. 

 Var. turtoni (Flem.). Not common. 

 Helix aspersa (Mi'iller). Very common in all gardens. 

 Helix granulata (Alder). Not common, Aydon Dene, crawling 



up plants. 



Helix nemora/is (L.). Not common at Corbridge; very 



common on links on the coast. 

 Helix hortensis (Mi'iller). Very common, Corbridge, in hedges. 



Var. olivacea. One specimen. 

 1900 March _>. 1 



