\Pro*bos`ci*dif"e*ra\, n. pl. [NL. See
{Proboscis}, and {-ferous}.]
1. (Zo["o]l.) An extensive division of pectinibranchiate
   gastropods, including those that have a long retractile
   proboscis, with the mouth at the end, as the cones,
   whelks, tritons, and cowries. See Illust. of {Gastropoda},
   and of {Winkle}.
2. (Zo["o]l.) A subdivision of the t[ae]nioglossate
   gastropods, including the fig-shells ({Pyrula}), the
   helmet shells ({Cassis}), the tritons, and allied genera.