| Note: Maturity 4, subadult – sexual characters well distinguished but gonads and accessory organs not completely developed; Maturity 5, adult – sexually mature with spermatophores in Needham’s sac in males; ovaries, nidamental and oviducal glands fully developed and ripe, eggs sometimes in oviducts, in females; DML, dorsal mantle length (mm) – measured from anterior-most point of mantle to posterior end of mantle; VMLI, ventral mantle length index – ventral mantle length, measured from anterior border of mantle at ventral midline, to apex of mantle, expressed as a percentage of DML; HLI, head length index – dorsal length of head measured from point of fusion of dorsal arms to anterior tip of dorsal mantle expressed as a percentage of DML; HWI, head width index – greatest width of head at level of eyes expressed as a percentage of DML; NCI, nuchal commissure width index – width of nuchal commissure expressed as a percentage of width of mantle at the position of nuchal commissure; MWI, mantle width index – mantle width at mantle opening expressed as a percentage of DML; FuLI, funnel length index – length of funnel from anterior funnel opening to posterior border of funnel measured along ventral midline expressed as a percentage of DML; FuWI, funnel width index – width of funnel at junction of funnel and head just anterior to funnel locking cartilages expressed as a percentage of DML; FFuI, free funnel index – length of funnel from the anterior opening to the point of dorsal attachment to head expressed as a percentage of funnel length; FLI, fin length index – greatest length of a single fin expressed as a percentage of DML; FBLI, fin base length index – length of fin attachment to mantle expressed as a percentage of DML; FWI, fin width index – greatest width of a single fin expressed as a percentage of DML; A 1 LI, arm I length index – length of arm I expressed as a percentage of DML; A 2 LI, arm II length index – length of arm II expressed as a percentage of DML; A LI, arm III length index – length of arm III expressed as a percentage of DML; A LI, arm IV length index – length of arm IV 3 4 expressed as a percentage of DML; A LI, right arm I length index – length of right arm I expressed as a percentage of DML (only in males); TtLI, tentacle length index R1 – total length of tentacular stalk and club expressed as a percentage of DML; ClLI, club length index – length of club, measured from proximal-most basal sucker to distal tip of club expressed as a percentage of DML; CIRC, club row count – number of longitudinal rows of suckers across width of club; GLI, gill length index – length of gill expressed as a percentage of DML; GWI, gill width index – greatest width of gill expressed as a percentage of DML; GiLC, gill lamellae count – number of lamellae on outer demibranch, excluding terminal lamella;A SC, sucker counts of arm I – total number of suckers or sucker stalks on arm I; A SC, sucker counts of 1 2 arm II – total number of suckers or sucker stalks on arm II; A SC, sucker counts of arm III – total number of suckers or sucker stalks on arm III; A SC, sucker counts of 3 4 arm IV – total number of suckers or sucker stalks on arm IV; A R1 SC, sucker counts of right arm I – total number of suckers or sucker stalks on right arm I (only in males); ClSI, club sucker index – diameter of largest club sucker expressed as a percentage of DML; A 1 SI, arm I sucker index – diameter of largest sucker on arm I expressed as a percentage of DML; A SI, arm II sucker index – diameter of largest sucker on arm II expressed as a percentage of DML; A SI, arm III sucker index – 2 3 diameter of largest sucker on arm III expressed as a percentage of DML; A 4 SI, arm IV sucker index – diameter of largest sucker on arm IV expressed as a percentage of DML; SpLI, spermatophore length index – length of spermatophore expressed as a percentage of DML; SpWI, spermatophore width index – greatest width of spermatophore expressed as a percentage of spermatophore length; SpRI, sperm reservoir index – length of sperm reservoir expressed as a percentage of spermatophore length; CBI, cement body index – length of cement body expressed as a percentage of spermatophore length; NidGI, nidamental gland index – length of nidamental gland expressed as a percentage of DML. |