Exotic molluscs in State of Paraíba, Northeast Brazil: a bibliographic survey

We present a list of exotic mollusc species recorded in the literature from State of Paraíba (PB), Northeast Brazil, as of April 2014. The total number of species of exotic mollusc recorded is seven, two Bivalvia and five Gastropoda. The Class Bivalvia's species was represented by Isognomon bicolor (Adams, 1845) and Corbicula fluminea (Müller, 1774), and Class Gastropoda's species by Achatina fulica (Bowdich, 1822), Melanoides tuberculata (Müller, 1774), Physella acuta (Draparnaud, 1805), Aplexa marmorata (Guilding, 1828), and Lymnaea columella (Say, 1817).