Southwest Florida Shells with Emphasis on Sanibel & Captiva
José H. Leal
(C.B. Adams, 1850)
Beautiful Top Snail
Shell size to 18 mm; shell turbinate, spire angle smaller than most Calliostoma. Whorls flat-sided to concave, shoulder well-defined, giving stepped aspect to spire. Whorls covered with finely beaded spiral lines. Color tan, mottled with reddish brown spots and irregular grayish streaks. Base of lighter color than spire, umbilicus lacking, central area of base whitish. Shell in the main image collected by Ken Piech on January 5, 2020 on Shell Island, to the south of Kice Island, Collier County, Florida. The specimen on the supplementary image has a narrower spire angle, and could belong to a separate species. Main photos by James F. Kelly.