Lacuna carinifera (A. Adams, 1853)

Qi, Lu, Xu, Biyang, Kong, Lingfeng & Li, Qi, 2023, Checklist of the micromolluscs in the intertidal zone of the Yellow Sea and Bohai Sea, China, Biodiversity Data Journal 11, pp. 105444-105444 : 105444

Lacuna carinifera (A. Adams, 1853)

Native status

Lives on intertidal sandy mud, algae.

Distribution

China, Japan.

Notes

Stenotis lois (Yen, 1936) is very similar to Lacuna carinifera (A. Adams, 1853), but the aperture is wider, with angulate periphery on the underside of the outer lip, the umbilicus more open. This study thinks Stenotis lois (Yen, 1936) is the larva of Lacuna carinifera (A. Adams, 1853) and is a synonym.

Diagnosis

Shell minute (4.3 ± 0.76 mm in length, 1.2 ± 0.26 mm in width), conical, depressed or auricular (Fig. 4 ). Whorls 4, inflated. Spire low; body whorl large, sudden expansion of width, slightly tilted. Shell thin, smooth, except for weak growth lines, with tawny periostracum. Keel round the body whorl, with grooved suture. Aperture large, pyriform, oblique, with angulate periphery on the underside of the outer lip, inner lip thick. Umbilicus open. Protoconch usually eroded.

Figures

Figure 4. Lacuna carinifera (A. Adams, 1853).