Definition and descriptions of the two Pachyoliva species in older texts and recent identification keys

This document had been prepared as a Supplemental Materials file for a paper on the taxonomy of the subgenus Pachyoliva in the genus Olivella (Olividae, Caenogastropoda), published in Biota Neotropica in 2012 (https://doi.org/10.1590/s1676-06032012000200011). However, this supplement did not appear with the main paper for technical reasons, and is now made available here.