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Southwest Florida Shells with Emphasis on Sanibel & Captiva

By José H. Leal

Family Cymatiidae

Ranularia cynocephala

(Lamarck, 1816)

Dog-head Triton

Shell size to 65 mm; very distinctive shell with solid, globular last whorl, square whorl shoulders, and relatively long siphonal canal. Usually with only one varix other than the thickened lip. Well-preserved shells have the outer lip and parietal wall (region opposite the outer lip) colored peach. Parietal wall with a dark-brown spot. The shell in the main picture was found in October 2016 by Gary Tucker on 0.5 m water on the eastern end of Sanibel. The supplementary image is of a shell found in February 2014 by Jeanne Risher on Kice Island. There are other records from Sanibel.