Dicharax tangmaiensis (Chen & Zhang, 2001) Fig. 17

Chamalycaeus tangmaiensis Chen & Zhang, 2001: 184-185, 188-189, figs 1-4.

Dicharax (?) tangmaiensis - Páll-Gergely et al. 2017: 107-108.

Type locality.

"Tongmai Town, (30°01'N, 95°E), Bomi County, Tibet Autonomous Region, China".

Material examined.

CASIZ TM 0010054 (holotype) deposited in IZCAS: Tong-Mai Town, Bo-Mi County, Tibet Autonomous Region, China, leg. Chen De-niu, 1980.6.20; CASIZ TM 0010056 (paratype): same as holotype.

Remarks.

Protoconch low, without notable sculpture; R1 rather dense, low ribs, no spiral striae visible; R2 + R3 90° combined; R2 with low ribs, ribs similar to those on R1; R3 with a prominent, blunt swelling.

The shell of Dicharax tangmaiensis is similar to some other northeastern Indian Dicharax species with fringed peristome (e.g., D. cucullatus ). Future investigation should reveal whether this species is really distinct from other Himalayan species, since no comparisons were made in the original description.