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.
...SIPHONOSTOMATA (Gr. siphon; and stoma, mouth). The division of Gasteropodous Molluscs in which the aperture of the shell is not "entire," but possesses a notch or tube for the emission of the ... — The Ancient Life History of the Earth • Henry Alleyne Nicholson
...
