Arthritica

Arthritica is a genus of bivalves belonging to the family Lasaeidae.
The species of this genus are found in Australia and New Zealand.
Species:

Arthritica ambotruncata
Arthritica bifurca
Arthritica crassiformis
Arthritica crassitesta
Arthritica dispar
Arthritica elongata
Arthritica finlayi
Arthritica helmsi
Arthritica hulmei
Arthritica japonica
Arthritica perfragilis
Arthritica reikoae
Arthritica semen
''Arthritica whitechurchi''