Inella granicostata Kosuge, 1962

Albano, Paolo G., Bakker, Piet A. J. & Sabelli, Bruno, 2019, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London, Zoosystematics and Evolution 95 (1), pp. 161-308 : 161

Inella granicostata Kosuge, 1962

Figure 52

Inella granicostata Kosuge 1962b: 121, pl. 8, fig. 11, text fig. 7.

Type locality.

Ankyaba, Setouchi-machi, Amami Islands.

Type material.

Holotype: TZM Mo. 12128 (fide Kosuge 1962b, not seen; illustrated in Higo et al. 2001: 50, G1676). Paratype: NHMUK 1966137: 1 specimen, Amami Islands, Japan .

Original description.

Shell of medium size, conical, rather cylindrical in lower part of spire. Protoconch of 2 whorls, mammillate, suture distinct and grooved. Sculpture of 3 rows of granules, furrows between rows deep. Granules elongate and beset close together, connected by axial threads and spiral keels and appear like somewhat indented costae, 22-24 to a whorl. Upper row slightly larger and blackish brown, lower two light brown and sometimes whitish. 2 extra rows of granules on the body whorl.

Length: 8.5 mm.

Remarks: This species is allied to T. angasi Crosse, though the latter has a white band in lower granules of body whorl and also differs from T. marmoratus Pease in details of sculpture of body whorl.

Figures

Figure 52. Inella granicostata Kosuge, 1962, Amami Islands, Japan. A Original figure. B-F, H Paratype, NHMUK 1966137: front (B, C), side (D E), back (F), aperture (H). G NHMUK label. Scale bars: B-F: 2 mm; H: 0.5 mm.