Boysidia ringens van Benthem Jutting 1950

Boysidia ringens van Benthem Jutting, 1950 Fig. 110 Boysidia ringens van Benthem Jutting, 1950: 11–12, fig. 3. Type material examined. Malaysia • 23 paratypes; from the type locality; M. W. F. Tweedie leg.; RMNH Moll.137127. Additional material examined. Malaysia • 7 shells; Kedah, Gunung Keriang (N of Alor Setar), Oct. 1998, Hemmen, leg. Wiesbaden ex. coll.; coll. PGB • 1 shell; Kedah, Gunung Keriang, 7.5 km NW of Alor Setar; ex. coll. Maassen; coll. PGB. Type locality. “ Mount Keriang, Kedah ”, Malaysia. Cross-diagnosis. This species is not similar to any other congener. Distribution. This species is known only from the type locality.