Aborjinia profunda sp. nov. Light microphotographs of transverse sections A buccal cavity at the upper level of the head (h) B buccal cavity surrounded with pharyngeal glands C pharyngeal region tightly filled with pharyngeal glands bodies D midbody with intestine and gonad E posterior region at the level of distal part of spicules F posterior region close to cloacal opening. Abbreviation: bc – buccal cavity, c – cloaca, cu – cuticle, gc – germinal cells, h – heilostoma, i – intestine, lc – lateral chords, pg – pharyngeal glands, s – spicules, vc – ventral chords. Scale bars: 20 µm (A–C); 50 µm (E, F); 100 µm (D).