TABLE OF CONTENTS 



Preface 177 



Introduction 178 



Family ARCIDAE 1 79 



Subfamily ARCINAE 179 



Genus Area Linne 1758 179 



Area pacifica (Sowerby) 1833 179 



Area mutabilis (Sowerby) 1833 180 



Genus Barbatia Gray 1842 180 



Subgenus Barbatia s. s 182 



B. (Barbatia) lurida (Sowerby) 1833 182 



Subgenus Cueullaearea Conrad 1865 184 



B. {Cueullaearea) reeveana (Orbigny) 1846 185 



Subgenus Calloarea Gray 1857 186 



B. {Calloarea) alternata (Sowerby) 1833 186 



Subgenus Fugleria Reinhart 1937 187 



B. {Fugleria) illota (Sowerby) 1833 187 



Genus Aear Gray 1857 188 



Acar gradata (Broderip and Sowerby) 1829 189 



Aear bailyi Bartsch 1931 190 



Aear pusilla (Sowerby) 1833 191 



Genus Areopsis von Koenen 1885 192 



Arcopsis solida (Sowerby) 1833 192 



Subfamily ANADARINAE Reinhart 1935 193 



Genus Anadara Gray 1847 193 



Subgenus Anadara s. s 195 



A, {Anadara) tubereulosa (Sowerby) 1833 195 



Subgenus Larkinia Reinhart 1935 195 



A. {Larkinia) grandis (Broderip and Sowerby) 1829 ,... 195 



A. {Larkinia) multieostata (Sowerby) 1833 196 



