Dioryx amphora (Benson, 1856)

Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D., 2020, Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue, ZooKeys 981, pp. 1-220 : 1

Dioryx amphora (Benson, 1856) Fig. 26

Alycaeus Amphora Benson, 1856: 226.

Alycaeus amphora - Reeve 1878: pl. 2, species 15.

Dioryx amphora - Kobelt and Möllendorff 1897: 146; Kobelt 1902: 336-337; Gude 1921: 198-199, fig. 31.

Alycaeus (Dioryx) amphora - Godwin-Austen 1914: 429-430, pl. 153, figs 11, 11a, 11b.

Type locality.

"ad Moulmein, et in valle Tenasserim".

Material examined.

UMZC I.102850 (1 syntype); NHMUK 1906.5.5.23 (figured by Godwin-Austen; this sample contains 2 Dioryx amphora shells, and a third shell of another Dioryx species).

Remarks.

Protoconch matte, without spiral striae; R2 with regular spiral striation, and weaker, irregular radial lines; the overall sculpture is weak; R2 very long, reaches 150°, its surface smooth, with alternating narrow light and slightly thicker dark stripes.

Figures

Figure 26. Dioryx amphora (Benson, 1856), probable syntype (UMZC I. 102850; type species of Dioryx). Photographs: Harold Taylor (NHM).