Parapionosyllis brevicirra Day, 1954
Parapionosyllis brevicirra Day, 1954: 16, fig. 2 j–o; Hartmann-Schröder 1962: 98, figs. 81; Alós et al. 1983: 289, fig. 3; San Martín 2003: 281, figs. 153–155.
Material examined. INFUECO stations: BC3 0710, 1 specimen, 353 m depth; BC7 0710, 1 specimen, 270 m depth. INCOECO stations: BC1 0611, 1 specimen, 563 m depth; BC8 0611, 1 specimen, 589 m depth; BC11 0611, 1 specimen, 409 m depth; BC16 0611, 1 specimen, 182 m depth; BC3 0710, 2 specimens, 220 m depth.
Habitat. In sandy sediments of marine caves, from 8 to 15 m depth (Riera et al. 2016), and sandy sediments in deep areas up to almost 600 m.
Distribution. Uncertain distribution, records are limited to Tristan da Cunha in the Pacific Ocean, in the Mediterranean Sea (Çinar 2003; San Martín 2003) and Canary Islands (Riera et al. 2016).