272 AMERICAN JOURNAL 



21. H. speciosa, Adams and Reeve, Voy. Samarang, 77, t. 22, 



f. 9, 1848. China Sea. 



22. H. tumorifera, Lamarck, Anim. s. Vert. 

 Delessert, Recueil, t. 11, f. 7. 



C. Guichardi, Bernardi, Jour. Conch, vi, 53, t. 2, f. 4, 1857. 

 Romer, Conch. Cab. 109, t. 14, f. 14, 15. 



Hew Caledonia, Australia. 



23. H. unedo, Linnseus, Syst. Nat. edit, x, 680. 



Reeve, Icon. sp. 13. Roemer, Conch. Cab. 101, t. 4, f. 11, 



12. Ceylon, Philippines, Australia. 



24. H. venusta, Dunker, Zeit. Mai. 32, 1862. Antilles. 



25. H. Virgo, Reeve, Zool. Proc. 1845. 



Icon. sp. 120. Hab.—f 



Subgenus LUNULICARDIA, Gray. 

 Annals and Mag. Nat. Hist, xi, 40, 1853. 



26. H. auricula, Forskal, Faun. Arab. 122. 



Reeve, Icon. sp. 39. Roemer, Conch. Cab. 120, t. 14, f. 

 18, 19. 

 C. retusum, var. 2, Lamarck, Anim. s. Vert. Red Sea. 



27. H. retusa, Linnreus, Syst. Nat. edit, xii, 1121. 



Reeve, Icon. sp. 103. Roemer, Conch. Cab. 118, t. 6, f. 

 1—4. 

 C subretusam, Sowerby, Zool. Proc. 110, 1840. Reeve, Icon, 

 sp. 100, 1845. Indian Ocean, China. 



Genus ADACNA, Eichwald. 



Br. Jahrbuch, 734, 1838. 



Hypanis, Pander, Beitr. Geogn. Russ. 1830. 

 Pholadomya, Agass. et Middendorff (not Sowerby). 



1. A. COlorata, Eichwald, Zool. Spec, i, 279, t. 5, f. 4, 1829. 



Caspian Sea. 



2. A. edentula, Talks, Reise, i, No. 93, 1771. Caspian Sea. 



3. A, lseviuscula, Eichwald, Zool. Spec, i, 279, t. 5, f. 1, 



1829. 

 Adams, Genera, iii, t. 112, f. 4. Caspian Sea. 



4. A. plicata, Eichwald, Zool. Spec, i, 279, t. 5, f. 2, 1829. 



Caspian Sea. 



5. A. vitrea, Eichwald, Zool. Spec, i, 279, t. 5, f. 3, 1829. 

 Amphidesma Caspia, Kryn. Caspian Sea. 



