Unfortunately two errors have crept into the above paper (Basteria 42: 15-26, 1978) for which printers and editors wish to apologize. On p. 20 under the genus Trochonanina the text should read as follows:


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Nederlandse Malacologische Vereniging

Bernard Verdcourt. (1978). Notes on East African land ans freshwater snails. 11. Miscellaneous records from Kenya and Tanzania including the description of two new species. Errata. Basteria, 42(4/6), 77–77.