- Arms
- Arm suckers with about 8-10 sharply pointed teeth on distal margins of inner rings
- Tentacles
- Club about 80% of length of tentacle.
- Club exhibits characteristics of the chiroteuthid families:
- Keel absent.
- terminal pad absent.
- club not expanded.
- Club straight.
- Club suckers in six regular series.
- Suckers
- Club sucker ring bears approximately six small, conical, widely-spaced teetn on the distal margin.
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Figure. Drawings of oral and aboral views of the tentacular club of a subadult B. scolops (holotype), 51 mm ML, Antarctic waters. Clubs of larger squid are unknown. Drawings from Young and Roper, 1968.