SIPHONOSTOMATA

‖Si′pho‐no‐stom″a‐ta (?), n. pl. [[NL. See Siphon, and Stoma.]] (Zoöl.) (a) A tribe of parasitic copepod Crustacea including a large number of species that are parasites of fishes, as the lerneans. They have a mouth adapted to suck blood. (b) An artificial division of gastropods including those that have siphonostomatous shells.