DONDERSIIDAE Simroth, 1893
Type genus. -- Dondersia Hubrecht, 1888.
Description. -- With a thin cuticle, without skeletal spicules, loosely
defined by varying combinations of characters: radula monostichous with
2, 3, or 4 upright denticles fused at tips or not fused, or radula lacking;
with two types of upright spicules or one type of adpressed spicules; ventral
salivary glands goblet cells, or simple tubular, or compound; with or without
posterior end drawn out into fingerlike projection; with or without copulatory
spicules. Nine genera, five monotypic: Dondersia Hubrecht, 1888,
Nematomenia Simroth, 1893, Ichthyomenia Pilsbry, 1898, Stylomenia
Pruvot, 1899, Heathia Thiele, 1913, Micromenia Leloup, 1948,
Lyratoherpia Salvini-Plawen, 1978, Helluoherpia Handl &
Büchinger, 1996, and Squamatoherpia Büchinger & Handl,
1996.