Dicharax planorbulus (Heude, 1885)

Alycoeus [sic] planorbulus Heude, 1885: 96, pl. 24, figs 2, 2a-c.

Alycaeus (Chamalycaeus) planorbulus - Kobelt and Möllendorff 1897: 149; Kobelt 1902: 361.

Dicharax planorbulus - Páll-Gergely et al. 2017: 68, figs 21B, C, 42E, F, 44.

Type locality.

"in ditione Tchen-k’eou” .

Material examined.

China, Tchen-K’eou , MCZ 167136 (10 syntypes).

Remarks.

Protoconch low, rather matte; R1 regularly, densely ribbed, ribs low; ribs becoming slightly more widely spaced towards end of R1; R2 very densely ribbed, ribs curved towards the aperture.