In the present regional monograph 2,168 specimens of Cerithiopsidae are analyzed. This material has been sampled by the MNHN during different expeditions: in 2014 in the Eastern Atlantic Ocean at the Îles du Salut (Salvation's Islands), French Guiana, in 2012 and 2015 in the Caribbean around Guadeloupe, and in 2016 in Martinique, also Caribbean. 1,916 specimens were identifiable at species level, resulting in a total of 52 species, of which 32 are new to science. Eight genera are represented: Belonimorphis (1), Cerithiopsis (40), Cubalaskeya (1), Prolixodens (2), Retilaskeya (3), Seila (2), Specula (1), Sundaya (1). New taxa: Cerithiopsis altiusae n. sp., Cerithiopsis bakisi n. sp., Cerithiopsis barthelati n. sp., Cerithiopsis bouchonorum n. sp., Cerithiopsis boutrini n. sp., Cerithiopsis brivalae n. sp., Cerithiopsis brugneauxae n. sp., Cerithiopsis cabritensis n. sp., Cerithiopsis chambardi n. sp., Cerithiopsis dannyi n. sp., Cerithiopsis demaziereae n. sp., Cerithiopsis desjobertae n. sp., Cerithiopsis domlamyi n. sp., Cerithiopsis dubreuili n. sp., Cerithiopsis etiennei n. sp., Cerithiopsis giuliafassioae n. sp., Cerithiopsis hielardae n. sp., Cerithiopsis michellegalli n. sp., Cerithiopsis michezae n. sp., Cerithiopsis natachae n. sp., Cerithiopsis oliviergrosi n. sp., Cerithiopsis pennecae n. sp., Cerithiopsis perigaudae n. sp., Cerithiopsis piaseckii n. sp., Cerithiopsis rabilleri n. sp., Cerithiopsis recourti n. sp., Cerithiopsis redferni n. sp., Cerithiopsis rostaingi n. sp., Retilaskeya valentini n. sp., Seila tissieri n. sp., Specula sassieri n. sp., Sundaya soubzmaignei n. sp.weiterlesen