Joubin (1933) collected 18 young squid of this species but based his description on three specimens, 61 (arm tip to tail), 45 and 17 mm (tentacle tip to tail). All specimens, in spite of the rather large size, these are paralarvae that lack most subadult characteristics.
A mastigoteuthid ...
- with large tubercules in advanced paralarvae.
- with a fin that is longer than wide.
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