The malacofauna of French Guyane is now well-known since the book of Massemin et al., published in 2009. In the latest issue of Folia Conchyliologica (#8, http://www.cernuelle.com/download.php?lng=fr) a paper was published that also gives an overview of the land and freshwater snails of that country. It appears to be a revised manuscript, originally drafted in 2003.
As part of the revision to update the manuscript, a table has been prepared comparing the taxonomy from the earlier work of Tillier in 1980 and the recent overview by Massemin et al. Besides eight colour plates (figuring many species in an old-fashioned way upside-down), there are many text figures on living snails.
Thouvenot, M., 2011. Escargot et limaces de Guyane. – Folia Conchyliologica 8: 4-30.