Benthic samples collected along the Brazilian coast yielded the description of four new species from three genera of Typhlotanaidae: one Hamatipeda (H. prolata), one Meromonakantha (M. mauri) and two Paratyphlotanais (P. apletos and P. bessai). A new genus Targaryenella is erected to accommodate Meromonakantha anarsios and differences between Targaryenella and Meromonakantha are given. This study increases the total number of Tanaidacea species known for Brazil by 8% (50 to 54 species); the family Typhlotanaidae off the coast of Brazil is now represented by four known genera. Identification keys to the three genera are provided.
Keywords: Tanaidomorpha, taxonomy, Revizee, Oceanprof, Habitats, Ambes, Southwestern Atlantic, Crustacea.