Trochus stellatus

The size of this large, heavy, top-shaped shell varies between 18 mm and 40 mm. The shell has wrinkled plaits and concatenated dots. The sutures of the upper whorls are spinous and radiated.[3] The shell has a yellow tint to it and has brown stripes.[4] The inside of the shell is a glossy white.

(Description as Trochus incrassatus) The height of the shell attains 30 mm, its diameter also 30 mm. The, thick, heavy, solid shell has a conical shape. It is, whitish, radiately striped above and below with purplish red. The outlines of the spire are convex. The 7 to 8 whorls are coarsely granulose in about 5 or 6 spiral series, of which the upper series is most prominent. The periphery is rounded. The base of the shell is a little concave, with about 7 concentric granulose or subgranulose lirae. The aperture is strongly lirate within upon the parietal and outer wall. The basal margin contains four or five teeth. The columella is dentate. The umbilical tract is nearly smooth or obsoletely spirally plicate.[5]

This marine species occurs off India, Sri Lanka, the Philippines, Japan, Oceania, New Caledonia, and Australia (the Northern Territory, Queensland and Western Australia); also in the Indian Ocean off Madagascar.

The upper part of the Trochus stellatus.

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• Rajagopal, A.S. & Mookherjee, H.P. 1978. Contributions to the molluscan fauna of India. Pt. I. Marine molluscs of the Coromandel Coast, Palk Strait and Gulf of Mannar - Gastropoda: Archaeogastropoda. Records of the Zoological Survey of India 12: 1-48
• Short, J.W. & Potter, D.G. 1987. Shells of Queensland and The Great Barrier Reef. Drummoyne, NSW : Golden press Pty Ltd 135 pp., 60 pl.
• Wilson, B. 1993. Australian Marine Shells. Prosobranch Gastropods. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp.
• Sasaki, T. (2000) Family Trochidae. In: Okutani, T. (ed.), Marine Mollusks in Japan. Tokai University Press, Tokyo, 55-83 (in Japanese)

• "Trochus stellatus". Gastropods.com. Retrieved 16 January 2019.
• Great Barrier Reef Invertebrates: Trochus stellatus
• Atlas of Living Australia: Trochus stellaris

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