Hapalogastridae

Hapalogastridae is a family of decapod crustaceans, belonging to king crabs in the broadest sense, containing the following species:
 * Acantholithodes Holmes, 1895
 * Acantholithodes hispidus (Stimpson, 1860)
 * Dermaturus Brandt, 1850
 * Dermaturus mandtii Brandt, 1850 — wrinkled crab
 * Hapalogaster Brandt, 1850
 * Hapalogaster cavicauda Stimpson, 1859
 * Hapalogaster dentata (De Haan, 1849)
 * Hapalogaster grebnitzkii Schalfeew, 1892
 * Hapalogaster mertensii Brandt, 1850
 * Oedignathus Benedict, 1895
 * Oedignathus inermis (Stimpson, 1860) — granular claw crab
 * Placetron Schalfeew, 1892
 * Placetron wosnessenskii Schalfeew, 1892 — scaled crab