Comprehensive Description

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Description

 Shell small for genus (height up to 47.9 mm, Table 1), thick, solid, fusiform, chalky white to pale brownish, inside of aperture pale orange. Shape broad, angulate, length of aperture and canal more than half length of shell, width/height ratio 0.53 to 0.56, whorls convex apart from slightly concave sutural ramp, suture shallow but impressed. Spire angle 63° to 68°. Protoconch and upper teleoconch whorls missing, remaining whorls about 4.5, last 3 with sculpture intact with 7–9 primary spiral cords, interspaces each occupied by one narrow, well defined secondary cord. Last whorl with 16–18 spiral cords, more prominent at periphery of shell than elsewhere, forming a distinct keel. Spire whorls with 24–28 pronounced axial ribs, interspaces deep, each almost equal to a rib in width. Last whorl with 14–15 such ribs. Ribs more pronounced towards the anterior end of shell. Aperture ovate. Parietal and columellar area well-defined, glazed; outer lip thin, slightly crenulated, without lirae or teeth. Siphonal canal short, open, directed slightly to left. Operculum large, thin, dark brown, elongate, nucleus terminal, tip sharp.  Aeneator martae sp. n. measurements of specimens. (%) means percentage compared to the total length of the shell. Maximum length (mm) Maximum width (mm) Length of aperture Width/Length Holotype 47.9 25.6 26.8 (56 %) 0.53 Paratype 1 44.0 23.6 27.9 (57 %) 0.54 Paratype 2 41.7 23.4 23.0 (57 %) 0.56 Paratype 3 40.2 22.1 22.6 (56 %) 0.55 Average 43.4 23.6 25.1 (56 %) 0.54

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© Juan Francisco Araya

Source: ZooKeys

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