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Shell of the Week: The Costate Horn Snail

  • Writer: José H. Leal
    José H. Leal
  • Apr 4
  • 1 min read

Cerithideopsis costata grows to 15 mm (about 0.6 inch). The shell may have around 12 round whorls and a sculpture of low, rounded axial ribs that decrease in size in the last two whorls, The outer lip is flaring in adult shells. The color is light- to dark-brown with spiral bands of lighter color. The species thrives around mangroves and protected areas of Southwest Florida and neighboring areas. The illustration represents a shell collected in March 1963 on North Captiva Island by William C. Brumbach.


Cerithideopsis costata from NOrth Captiva Island, Florida. Illustration: José H. Leal.
Cerithideopsis costata from NOrth Captiva Island, Florida. Illustration: José H. Leal.
 
 
 

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