Vallonia costata (Müller, 1774) is recorded from Westcliff, Johannesburg, only the second record for South Africa. Additional notes on Cochlicopa lubricella (Porro, 1838) in southern Africa are supplied.

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Nederlandse Malacologische Vereniging

A.C. van Bruggen. (1998). Vallonia costata (Müll.) (Gastropoda Pulmonata) in South Africa, with additional notes on other alien species. Basteria, 61(4/6), 85–87.