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Scientific Name: Cerithium tenellum G. B. Sowerby II, 1855
English Name: Tenellid cerith
Local/Bangla Name: leza (লেজা), kata shamuk (কাটা শামুক)
Tenellid cerith - leza (লেজা), kata shamuk (কাটা শামুক)

Photo: (GBIF)

Classification:
Kingdom: Animalia
Phylum: Mullusca
Class: Gastropoda
Order: Caenogastropoda
Family: Cerithiidae
Description:
The shell is petite, slim, and delicate. The outer lip is thick with pronounced, serrated edges, and it forms a distinct, convex shape. The columella is adorned with a substantial callus. The shell’s surface displays multiple spiral ribs, and towards the upper part of the whorl near the periphery, you’ll find three rows of nodules that are of equal size. Additionally, the body whorls are marked by five primary spiral cords and a sizable varix opposite the aperture. The shell’s surface is predominantly white, with white nodules in chestnut or chocolate hues, sometimes featuring one or more thin, chocolate-colored spiral lines. The aperture typically appears in a purple-brown shade.
Habitat & Distribution in Bangladesh:
St. Martin’s island and the Sundarbans
Environment:
Marine
Main References:

Siddiqui KU, Islam MA, Kabir SMH, Ahmad M, Ahmed ATA, Rahman AKA, Haque EU, Ahmed ZU, Begum ZNT, Hassan MA, Khondker M, Rahman MM (2007) Encyclopedia of Flora and Fauna of Bangladesh, Vol. 17. Molluscs. Asiatic Society of Bangladesh, Dhaka 415 pp.

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