Note
A taxonomic study of the marine diatoms belonging to the Suborder Araphidineae from the southwestern coast of
Puerto Rico is reported in this paper. Sixteen genera and thirty-one species were observed. A new genus, Fiorella, and
a new species, F. portoricensis, are described. Five taxa are new records for Puerto Rico and two for the Caribbean
Sea. Most of the encountered species are cosmopolitan forms in temperate-tropical neritic waters.