Family CONDYLOSTOMATIDAE Kahl in Doflein & Reichenow, 1929

Syns.

Bryometopidae, Condylostomidae

Body typically large, heavily ciliated, contractile; buccal ciliature, including paroral membrane, prominent; macronucleus long and moniliform in type-genus; body very elongate in some forms, nearly ellipsoidal in others; contractile vacuole often with long feeding canal; in various habitats: fresh-water, edaphic, and especially marine.

Bryometopus Kahl, 1932. Few species.
Condylostoma Bory de St. Vincent, 1826 (originally written as Kondyliostoma, then, for a few more years, as Kondylostoma). Many species.
Copemetopus Villeneuve-Brachon, 1940. Single species.
Incertae sedis:
Dellochus Corliss, 1960 (for Lochus). Single species.