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Doncaster, 1902

Description
Hooks: 6-8; anterior teeth: 4-5; posterior teeth: 8-14.
Maximum adult body length: 6 mm; tail: 27-29 %.
Body slender, opaque; transversal musculature absent; head wide; hooks not serrated. Fin bridge absent. Anterior fins of medium length, fully rayed, rounded; posterior fins of medium length, fully rayed, angular. Collarette absent; gut diverticula present. Large eyes, with star-shaped pigment spot. Seminal vesicles with knob and trunk; position of seminal vesicles: touching posterior fins, but separated fom tail fin. Ovaries long, reaching to neck region; ova large. Adhesive papillae and adhesive organs absent. Apical glands absent.

Distribution: epipelagic;

Remarks:

Type locality:

Sagitta septata