Four Alycaeus species, all with keeled shells, are described from Thailand, Laos, Malaysia and Indonesia, viz. Alycaeus christae spec. nov., A. rolfbrandti spec. nov., A. carinata spec. nov., and A. wilhelminae spec. nov.

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Basteria

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Nederlandse Malacologische Vereniging

Wim J.M. Maassen. (2006). Remarks on Alycaeus species from South-East Asia, with the descriptions of four new species with keeled shells (Gastropoda, Caenogastropoda, Cyclophoridae). Basteria, 70(4/6), 133–139.