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Partridge Tun Video Stock Footage
The pattern and brownish colour of the shell is reminiscent of a partridge's plumage hence the common name. The size of an adult shell varies between 70 mm and 220 mm. The ovate-oblong shell is ventricose and pretty thin. It is of a reddish-brown color, pleasingly varied with white spots in transverse series, for the most part semi-lunar, and more or less distant. The conical spire is slightly projecting and, pointed. It is composed of from five to six whorls which are furnished with numerous ribs, often widened, feebly convex, and separated by furrows hardly apparent. The suture is very distinct and is slightly channeled towards the body whorl. The aperture is large, subovate, marked by transverse and slightly projecting bands, which correspond to the furrows of the exterior. The interior of this cavity is of a fawn color. The outer lip is thin, everted, a little undulated, and adorned with a white band the whole length of its interior, with the exception of the edge, which is of a deep brown. The inner lip is spread out over the body of the shell. It is very thin, transparent, and terminated below by a projecting plate which covers the umbilicus, and seems also to form a part of it. The columella is smooth, polished, and forms at the left of the umbilicus a thick rib, marked by transverse striae, which terminates at the emargination of the base. The ground color of the shell is a bluish white, covered with irregular spots of a red brown, bordering upon the v...
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