33 



7. H. rufescens, Lam., An. sans Vert. (Desh. ed.) vi. 102, 



1835. 

 Reeve, Conch. Icon. Monog. Mactra, f. 9, 1858. 



Van Diemans Land. 



8. H. Sayi, Gray, Mag. Nat. Hist. 373, 1837. 



Reeve, Conch. Icon. Monog. Mactra, f. 33, 1858, 

 Spizula Sayi, Gray, Mag. Nat, Hist. 373, 1837. Florida. 



9. H. solida, Linn,, Syst, Nat. (12th ed.) 1126, 1767. 



Chemnitz, Conch. Cab. vi. f. 230, 1782. 



Europe, European Seas. 



10. H. SOlidissima, Chemn., Conch. Cab. x. 170, f. 1656, 



1788. 

 Reeve, Conch. Icon. Monog. Mactra, f. 8, 1854. 



Atlantic Coast of United States. 



11. H. sublanceolata, Deshayes, Zool. Proc. ()6, 1851. 



Reeve, Conch. Icon. Monog. Mactra, f. 74, 1854. 



12. H. subtruncata, Da Costa, Brit. Conch. 198; 1778. 



Reeve, Conch. Icon. Monog. Mactra, f. 90, 1854. 

 Trigonella subtruncata. Da Costa, Brit. Conch. 198, 1778. 

 Spizula subtrmicata, Gray, Loudon's Mag. Nat. Hist. 373, 

 1837. European Seas. 



13. H. tellinoides, Deshayes. 



14. H. triangula, Reneire. 



Philippi, Ena. Sicil. 11, 1836—44. Reeve, Conch. Icon. 

 Monog. Mactra, f. 94, 1854. 

 31. Euxiniea, Krynicki, Bull, de Moscou, No. 2, 63, 1837. 



Jllediterranean. 



15. H. truncata, Montagu, Test. Brit. Supp, 34, 1808. 



Reeve, Conch. Icon. Monog, Mactra, f. 42, 1854. 

 Trigonella Tonaria, Da Costa, 1788. 

 M. crassatella, Lam., An. s. Vert. vi. 107, 1835. 

 Spizula truncata, Gray, Loudon's Mag. Nat. Hist. 373, 1837. 



Eu 



'•ope. 



Sub-genus OXYPERAS, Morch, 



16. H. sequilateralis, Deshayes, Zool, Proc. 17, 1854. 



New Zealand. 



17. H. transversa, Deshayes, Zool, Proc. 66, 1854. 



Reeve, Couch. Icon. Monog. Mactra, f. 88, 1854. 



18. H. triangularis, Lam., An. sans Vert. vi. 103, 1835. 



Reeve, Conch. Icon. Mong, Mactra, f, 1, 1854. 

 Spizula triangularis, Gray, Loudon's Mag. Nat. Hist. 1837. 



