The Nautilus Log
Bistolida stolida

Bistolida stolida

NameBistolida stolida
Scientific NameBistolida stolida
Common NameStolid Cowry
FamilyCypraeidae
GenusBistolida
Speciesstolida
Geographic DistributionWidespread throughout the Indo-Pacific region, including the Red Sea, Indian Ocean, and various Pacific islands, extending from East Africa to the Western Pacific.
Habitatintertidal
Average Size (mm)Approximately 20 mm to 40 mm in length.
Identifying FeaturesKey identifying features include the ovate, glossy shell with its characteristic dorsal brown blotch. In living specimens, the mantle is covered with numerous, often branched, tree-like papillae, which are typically extended to partially or fully cover the shell, aiding in camouflage.
Raritycommon
Author Citation(Linnaeus, 1758)

Description

The image displays a living specimen of the Stolid Cowry, *Bistolida stolida*, with its mantle partially extended over the shell. The shell, where visible, is ovate and glossy, exhibiting a pale, whitish base color with a prominent, irregular brown to orange-brown blotch on its dorsal surface. The mantle is mottled, appearing translucent to brownish, and is densely covered with numerous small, branched, tree-like papillae, which serve as camouflage. The animal is situated on a rocky or sandy substrate, indicative of its natural marine habitat.

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