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Moltschanoff, 1909

Hooks: 8-10; anterior teeth: 9-10; posterior teeth: 16-21.
Maximum adult body length: 20 mm; tail: 16-20 %.
Body flaccid, tranparent; transversal musculature absent; head narrow; hooks not serrated. Fin bridge absent. Anterior fins short, fully rayed, rounded; posterior fins of medium length, fully rayed, rounded. Collarette absent or short; gut diverticula absent. Small eyes, with star-shaped pigment spot. Seminal vesicles with knob and trunk; position of seminal vesicles: separated from posterior fins, touching tail fin. Ovaries short, reaching to anterior end of posterior fins or slightly longer further; ova small. Adhesive papillae and adhesive organs absent. Apical glands absent.

Distribution: epipelagic; Black Sea.

Type locality: Black Sea.

Sagitta euxina