47 



Genera undetermined. 

 Genus MACTEA, Linn. 



M. amygdala, Crosse and Fischer, Jour, de Oonch. iv. 3d 

 ser. o49, 1864. Amfralia. 



M. aequilateralis, Deshayes, Zool. Proc. 17, 1858. 

 lieeve. Conch. Icon. Monog. Mactra, f. 14, 1851. 



New Zealand. 

 M. angulifera, Deshayes, Zool. Proc. 70, 1854. FliiUppines. 



M. Cumingiana, Petit, Jour. Conch, iv. 359, pi. 12, f. 1, 2, 



1853. 3Iouth of the Gambia Miver, Africa. 



M. pulchella, Philippi, Abbild. ii. 71, pL 2, f. 3, 1845. 



( 'liina. 



