Dicharax oligopleuris ( Moellendorff , 1887)
Alycaeus oligopleuris Möllendorff , 1887a: 310-311.
Alycaeus oligopleuris - Möllendorff 1891: 342, pl. 30, figs 9, 9b.
Alycaeus (Chamalycaeus) oligopleuris - Kobelt 1902: 360-361.
Chamalycaeus (Chamalycaeus) oligopleuris - Zilch 1957: 144, pl. 5, fig. 9.
Dicharax oligopleuris - Páll-Gergely et al. 2017: 45, fig. 31E.
Type locality.
"Ad Buket Pondong".
Material examined.
Malakka: Perak, coll. Möllendorff , SMF 109226 (lectotype, designated by Zilch 1957); Same data, SMF 109227 (2 paralectotypes).
Remarks.
Protoconch low, without spiral striae; R1 with widely spaced, strong ribs, which are the most prominent near the suture and become lower away from it; R2 very short, consists of ca. 15 ribs, which are curved towards the aperture.