Phylum Chaetognatha Leuckart, 1854 - chaetognaths Genus Sagitta Quoy & Gaimard, 1827 Sagitta planctonis Steinhaus, 1896 see Solidosagitta planctonis (Steinhaus, 1896) Sagitta planctonis f. zetesios Fowler, 1905 see Solidosagitta zetesios (Fowler, 1905)