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.