45 



8. S. fragilis, Chemnitz, Conch. Cab. vi. 236, pi. 24, f. 235, 



1782. 

 Reeve, Conch. Icon. Monog. Mactra, f. 47, 1854. 

 3Iactra Braziliana, Lam., An. s. Vert. vi. 106, 1835. 

 M. oblomja, Say, Jour. Acad. Nat. Sci. Phila. ii. 310, 1821. 

 Spisula fragilis, Gray, Loudon's Mag. Nat. Hist. 1837. 



Honduras, Florida. 



Sub-genus MACTROMERIS. 



9. S. ovalis, Gould, Amer. Jour. Sci. (2d ser.) xxxviii. 196, 



1840. 

 Inverteb. of Mass. 53, f. 32, 1841. 

 S. ponderosa^ Philippi, Abbild. iii. 1845. 

 S. similis, Gray, not Say. 

 S. grandis, Deshayes, not Chemnitz. 



10. S. Ovata, Gray, Fauna of New Zealand, 251, 1843. 



Reeve, Conch. Icon. Monog. Mactra, f. 30, 1854. 

 iS2}isula ovata, Gray, Loudon's Mag. Nat. Hist. 1837. 



New Zealand. 



11. S. planulata, Conrad, Jour. Acad. Nat. Sci. vii. 240, 1834. 



/Sta. Barbara. 



12. S. Sayi, Gray, Mag. Nat. Hist. 373, 1837. 



SjHsula Sayi, Gray. Florida. 



13. S. silicula, Deshayes, Zool. Proc. 69, 1854. 



Reeve, Conch. Icon. Monog. Mactra, f. 108, 1854. 



Luzon, Pkilippines. 



14. S. striatella, Lam., An. sans Vert. vi. (Desh. ed.) 98, 1835. 



Reeve, Conch. Icon. Monog. Mactra, f. 12, 1854. 



15. S. velata, Philippi, Zeits. f. Malak. 153, 1848. 



Abbild. iii. 137, pi. 3, f. 5, 1845. Reeve, Conch. Icon. 

 Monog. Mactra, f. 20, 1854. Panama. 



Sub-genus MEROPE, H. and A. Adams. 



16. S. -ffigyptiaca, Chemnitz, Conch. Cab., ii., 218, pi. 200, 



f. iy5y-6. 

 Reeve, Conch. Icon. Monog. Mactra, f. 112, 1854. 



17. S. Anatinoides, Reeve, Conch. Icon. Monog. Mactra, f. 



123, 1854. 



18. S. capillacea, Deshayes, Zool. Proc, 69, 1854. 



Reeve, Conch. Icon. Monog. Mactra, f. 117, 1854. 



Philippines, and mouth of Indus. 



