Cycloryx constrictus ( Benson, 1851 )

Cycloryx constrictus ( Benson, 1851) View in CoL

Fig. 20A–D

Cyclostoma constrictum Benson, 1851: 184–195 View in CoL .

Alycaeus constrictus var. minor Benson, 1859: 181 View in CoL .

Alycaeus constrictus View in CoL – Sowerby 1877: pl. 5, species 41.

Alycaeus ( Alycaeus) constrictus View in CoL – Kobelt 1902: 343.

Alycaeus ( Cycloryx) constrictus View in CoL – Godwin-Austen 1914: 347–349, pl. 147 figs 4, 4a, pl. 154 figs 1, 1a. — Gude 1921: 277–278.

Alycaeus ( Cycloryx) constrictus var. minor View in CoL – Godwin-Austen 1914: 348.

Cycloryx constrictus View in CoL – Ramakrishna et al. 2010: 70.

Pincerna constricta View in CoL – Páll-Gergely 2017: 218, fig. 1a. — Páll-Gergely et al. 2020: 171 View Cited Treatment .

Diagnosis

This species can be recognized based on the high conical shell shape, widely-spaced ribs, and thin peristome. R2 with several (ca 10) low ribs.

Type material examined

INDIA • holotype (see Fig. 20A–D and Preece et al. 2022); UMZC I.103745 .

Additional material examined

INDIA • 5 shells; Rungun Valley, Darjiling; NHMUK 1906.4.4.41.

Type locality

“ad Darjiling Himalayae Sikkimensis”.