Abstract
The genus Chloritis H. Beck, 1837 comprises 160 species in the world and is restricted to South-east Asia with numerous species having usually small distributional ranges. There were eight Chloritis species discovered in Vietnam. Specimens of Chloritis caseus (Pfeiffer, 1860) have been found in Dak Lak Province as a new record for the fauna of Vietnam, thus so far, there is a total of nine species of the genus Chloritis reveated for terrestrial molluscs of Vietnam. Chloritis caseus has some the following characters as: shell medium, dextral, yellowish-brown in colour; shell rather flat with slightly elevated spire; body whorl keeled, somewhat shouldered due to slight depression from ventrolateral direction; whorls 4½, convex, separated by impressively deep suture; approximately quarter of the last whorl turns obliquely downwards, so the aperture is directed toward umbilicus; aperture rounded, peristome expanded, reflexed and thickened; parietal callus present only; umbilicus open.
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