Helicarionidae
Mathewsoconcha albocincta Preston, 1913
Mathewsoconcha belli Preston, 1913
Mathewsoconcha compacta (Preston, 1913)
Mathewsoconcha elevata (Preston, 1913)
Mathewsoconcha microstriata (Preston, 1913)
Mathewsoconcha phillipii (Gray, 1834)
Mathewsoconcha suteri (Sykes, 1900)
Mathewsoconcha vexillum Preston, 1913
