Natica patula

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Amauropsis islandica, common name the Iceland moonsnail, is a species of predatory sea snail, a marine gastropod mollusk in the family Naticidae, the moon snails. Description The maximum recorded shell length is 40 mm. (Description of Amauropsis purpurea) The shell is elongate-globose, coated with a yellowish epidermis, and exhibits a purple-brown hue that weathers to a purplish-white tone.

Polinices es un género de caracoles marinos depredarores. Se trata de moluscos gasterópodos de la familia Naticidae, conocidos como caracoles luna. ​ Sus conchas son grandes y sólidas, normalmente de color blanco brillante y aspecto de porcelana.