limacineann.

/lʌɪməˈsɪnɪən/Etymology: < modern Latin Limacinea, < Latin līmāc- (see limacine adj.) + -an suffix.
1839 XIII. 485/1 The second section of the Limacineans of M. de Blainville, or those which have the border of the mantle enlarged into a species of buckler.
This entry has not yet been fully updated (first published 1903; most recently modified version published online March 2018).