Costosyrnola nitidissima is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies. The species is one of two known species to exist within the genus, Costosyrnola. The other species being Costosyrnola thailandica. Distribution Much like many other mollusks in this family of gastropods, this species occurs mainly throughout the Red Sea. References External links To World Register of Marine Species Pyramidellidae Gastropods described in 1869