83 



* 



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



1835. 

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



Van Diemans Land. 



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



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

 Sjnzida 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. i)6, 1854. 



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



12. H. subtmncata, Da Costa, Brit. Conch. 198, 1778. 



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

 Triyonella subtrancata, Da Costa, Brit. Conch. 198, 1778. 

 Spizula subtruncata, 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. Euxiiiica, Krynicki, Bull de Moscow, No. 2, 63, 1837. 



Mediterranean, 



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



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

 Trigonella Tonaria, Da Costa, 1788. 

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

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



Europe. 



Sub-genus OXYPERAS, Morch. 



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



JVetv Zealand, 



17. H. transversa, Deshayes, Zool. Proc. 6Q, 1854. 



Reeve, Conch. 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, 



