Heteropod a

(het-e-rop’6-dii), x. pl. [NL., neut. pl. of heteropus (-pod-): see heteropod.] In zodl., aname applied to several groups. (a) In Crustacea, a group of amphipods or isopods including forms with 14 feet, some of which are fitted for swimming. Latreiile, 1826. (b) A cla of Mollusca, or an order or a subcla of Gasteropod a; the nucleobranchiate mollusks, haying the foot (pro podium) modified into a swimming-organ or vertical fin lacking epipodia, the gills when present ma ed on the hinder part of the back, and the shell small or wanting. They are free-swimming pelagic organisms, of delicate, gelatinous, hyaline or transparent structure. There are two families, Firolide and Atlantide. The leading genera of the former are Firola (or Pterotrachea) and Car in aria, and of the latter Atlanta and the fo il Bellerophon. Car yob ranch i a is a synonym, (¢) A group of echinoderms, Also written Heteropodes. randt, 1885. heteropod an (het-e-rop’d-dan), ». Same as heteropod.