Mantle slender, muscular. Fins sagittate, relatively short, length about 40 to 45% of mantle length. Funnel groove with foveola, no side pockets. Tentacular club expanded, robust, long; median manal sucker rings with sharp, triangular teeth alternating with flat, truncate platelets. Arms relatively short; arm sucker rings smooth proximally, toothed with about 10 to 14 graded, sharp teeth distally; right arm IV hectocotylized in distal third with suckers and stalks modified into low, conical...