Wikipedia
                    Hapalogastridae
                    
                        
                
                                                                    Hapalogastridae is a family of decapod crustaceans, 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