Adelomelon riosi, common name Rios's volute, is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes.
Description
The length of the shell varies between 200 mm and 315 mm. ==Distribution==
Distribution
This marine species occurs off the Atlantic coast of South America, from Brazil to Argentina. Sometimes trawled in 300–320 meters depth. ==References==