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Verrill, 1873

Description
Hooks: 9-11; anterior teeth: 2-8; posterior teeth: 12-18.
Maximum adult body length: 30 mm; tail: 17-25 %.
Body firm, opaque; transversal musculature absent; head of medium width; hooks not serrated. Fin bridge absent. Anterior fins short, fully rayed, rounded; posterior fins of medium length, fully rayed, rounded. Collarette absent or very short; gut diverticula present. Small eyes with round pigment spot. Seminal vesicles conical; position of seminal vesicles: well separated from posterior fins, touching or close to tail fin. Ovaries short, narrow, reaching to posterior end of anterior fins; ova fairly large. Adhesive papillae and adhesive organs absent. Apical glands absent.

Distribution: distant neritic, epipelagic; subarctic.

Remarks:

Type locality:

Subspecies (only discriminating characters summarised):

? Sagitta elegans elegans Verrill, 1873

Hooks: 9-11; anterior teeth: 2-8; posterior teeth: 12-18. Maximum adult body length: 30 mm; tail: 17-25 %. Seminal vesicles conical; position of seminal vesicles: well separated from posterior fins, touching or close to tail fin. Ovaries short, narrow, reaching to posterior end of anterior fins; ova fairly large.

? Sagitta elegans arctica Aurivillius, 1873

Hooks: 10-13; anterior teeth: 2-10; posterior teeth: 16-25. Maximum adult body length: 44 mm; tail: 15-25 %. Seminal vesicles conical. Position of seminal vesicles: touching or close to tail fin, well separated posterior fins. Ovaries of medium length, narrow, reaching to region of ventral ganglion; ova fairly large.

? Sagitta elegans baltica Ritter-Záhony, 1911

Hooks: 8-10; anterior teeth: 4-6; posterior teeth: 11-15. Maximum adult body length: 20 mm; tail: 10-16 %. Seminal vesicles conical; position of seminal vesicles: touching or close to tail fin, well separated from posterior fins. Ovaries of medium length, narrow, reaching to region of ventral ganglion; ova fairly large.

Sagitta elegans