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Note

Cephalopoda Glossary

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Abreviations and definitions

• AL - Arm length (arm I). Measured from the beaks to the arm tip.
• ALI - Arm length index (Arm length as % of TL or ML)
• CL - Length of longest cirrus; also CiL or MCL (max. cirrus length)
• CLI - Cirrus length index (Max. cirrus length as % of HW)
• ED - Eye diameter
• EDI - Eye diameter index (Eye diameter as % of HW)
• FL - Fin length (see illustration).
• FLI - Fin length index (Fin length as % of HW)
• FS - Fin span (see illustration)
• FW - Fin width (see illustration)
• FSI - Fin span index (Fin span as % of TL)
• HW - Head width (see illustration); distance between outer edges of lenses.
• HWI - Head width index (Head width as % of TL or ML)
• ML - Mantle length (see illustration)
• MLI - Mantle length index (Mantle length as % of TL)
• SD - Sucker diameter. Measured across largest diameter, whether of the outer rim (infundibulum) or sucker body (acetabulum) of the largest sucker; also MSD (max. sucker diam.) or ASD (arm sucker diameter).
• SDI - Sucker diameter index (Max. sucker diam. as % of HW)
• SDn - Maximum diameter of largest normal sucker.
• SDe - Maximum diameter of largest enlarged sucker (sexually dimorphic enlarged suckers are far larger than the typical suckers on the arm).
• TL - Total length. (see illustration)

References

Collins, M. A. In press. The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the North-east Atlantic, with descriptions of three new species.