Benson, W. H. (1852). Notes on the genus Cyclostoma; and characters of some new species from India, Borneo, and Natal. Annals and Magazine of Natural History. (2) 10: 268–272.
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Benson, W. H.
1852
Notes on the genus <i>Cyclostoma</i>; and characters of some new species from India, Borneo, and Natal