32 



Genus MACTRA, Linn. 



Sjst. Nat., ed. xii. 1125, 1767. 



1. M. Gaudelupensis, Recluz. Journ. de Conch., iii. 249, 



1852. 

 M. grandis, Lam., An. sans Vert. (Desh. ed.), vi. 99, 1835. 

 M. Lamarckii, Philippi, Abbild. ii. 73, 1845. Guadaloupe. 



2. M. maxima, Chemnitz, Conch. Cab., vi. 229, pi. 23, f. 288, 



1782. 

 31. grandis, GmeL, p. 3259, Philippi, Abbild. ii. 73, 1845. 



3. M. nitida, Schroeter, Einl. Conch., iii. pi. 8, f. 2, 1783. 



lleeve's Conch, f. 46. 

 M. strammea, Lam. 



4. M. Spengleri, Linn., Syst. Nat. (12th ed.), 1125, 1767. 



lleeve Conch. Icon. Monog. Mactra, f. 40, 1854. 



Cajje of Good Hope. 



5. M. tumida, Chemnitz, Conch. Cab., vi. 218, f. 210, 212, 



1782. 

 Reeve's Conch. Icon. Monog. Mactra, f. 21, 1858. 



Island of jSt. Thomas. 



Genus HEMIMACTRA, Swainson. 



1. H. aspera, Sowerbj, Tankerville Cat. Appen. 2, 1825. 



Reeve, Conch. Icon. Monog. Mactra, f. 65, 1854. 

 SpizuJa tenera, Humph. ? Gray, Loudon's Mag. Nat. Hist. 

 1837. Fhilippbies. 



2. H. Dysoni, Deshayes. 



3. H. elliptica, Brown, 111. Conch. Brit. 109, pi. 41, f. 6, 



184o. 



Reeve, Conch. Icon. Monog. Mactra, f. 101, 1854. 



British and French Seas. 



4. H. elongata, Quoy and Gaim., Voy. Astrolabe, pi. Ill, f. 



5, 8, 1834. 

 Reeve, Conch. Icon. Monog. Mactra, f. 43, 1854. 

 Spizida elongata, Gray, Loudon's Mag. Nat. Hist. 1837. 



New Zealand. 



5. H. Mariae, A. Adams. 



6. H. rostrata, Spongier, Skrivt. Nat. Selskab. v. 115, 1799. 



Reeve, Conch. Icon. Monog. Mactra. f. 104, 1854. 



• 3Ioreton Bay, Australia. 



