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Euprotomus aurisdianae
''Euprotomus aurisdianae'', common name the Diana conch, is a species of small to medium-sized sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.
==Shell description==
The maximum shell length of this species is up to 90 mm, but it more commonly grows to 70 mm in size.〔Poutiers, J. M. (1998). Gastropods in: FAO Species Identification Guide for Fishery Purposes: The living marine resources of the Western Central Pacific Volume 1. Seaweeds, corals, bivalves and gastropods. Rome, FAO, 1998. page 469.〕
''Euprotomus aurisdianae'' has a thick and solid shell which has a nearly elliptical contour. The shell has a high pointed spire and an irregular body whorl, ornamented with large knobs and easily distinguishable and divergent ridges. The flaring outer lip has a characteristic posterior expansion, with an aspect similar to that of a spine, that extends itself posteriorly as far as half the length of the apex. Liration is present near the anterior and posterior ends of the outer lip. The inner lip is smooth with a thin callus. The siphonal canal is strongly bent,〔 and the stromboid notch is deep, easily distinguishable.
The shell color can vary from dull cream to pale grey, with irregular darker spots and lines. The ventral callus and inner lip are commonly glossy white. The aperture is rich orange or pink interiorly, and becomes paler towards the outer lip margin.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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