270 AMERICAN JOURNAL 



C. Icevigatum, Gmelin, Syat. Nat. 3251. 

 C. citrinuni, Wood, Gen. Conch, t. 54, f. 3, 1817. 

 C. oviputamen, Reeve, Zool. Proc. 168, 1844. Conch. Icon, 

 sp. 36. Romer, Conch. Cab. 91. 



West Indies to Rio Janeiro. 



Genus HEMICAEDIA, Klein. 



Ostracol. 137, 1753. 



Corculum (pars), Hebenstreit, Dissert. Conch. 1728. 



" Bolten, Mus. 188. 

 Cardissa, Muhlfeldt, Entwurf. 52, 1811. 

 Isocardia, Oken (non Lnm. nee Klein), Zool. 234, 1815. 

 Hemic ardium, Cuvier, Regne Anim. 479, 1817. 



1. H. cardissa, Linnaeus, Syst. Nat. edit, x, 678. 



Reeve, Icon. sp. 15. Romer, Conch. Cab. 113, t. 6, f. 11, 

 1869. Indian Ocean, Philippines. 



2. H. Dionaea, Brod. and Sowb., Zool. Jour, iv, 367, 1828. 



Reeve, Icon. sp. 122. lsl. Annaa. 



3. H. humana, Chemnitz, Conch. Cab. vi, 153, t. 14, f. 145, 



146. 

 Reeve, Icon. f. 15 a. Romer, Conch. Cab. 116, t. 6, f. 5, 



6, 9, 10. 



0. Junonice, Lamarck, Anim. s. Vert. 



C. roseum, Chemnitz, Conch. Cab. vi, 154, t. 14, f. 147, 148. 



Reeve, Icon. f. 15 b. 

 C. unimacidatum, Sowerby, Zool. Proc. 84, 1833. Reeve, 



Icon. sp. 114. Indian Ocean, Chinese Sea. 



4. H. monstrosa, Chemnitz, Conch. Cab. vi, 155, t. 14, f. 



149, 150. 

 Reeve. Icon. sp. 15. Romer, Conch. Cab. 117, t. 6, f. 



7, 8. 



C. inversum, Lamarck, Anim. s. Vert. Hast Indian Seas. 



Subgenus FRAGUM, Bolten. 

 Museum, edit, i, 189, 1789. 



Hemicardium, Swainson (not Cuvier), Malacol. Man. 373, 



1840. 



5. H. Adamsii, Reeve, Voy. Samarang, 77, t. 22, f. 2, 1848. 



Borneo. 



6. H. biangulata, Broderip and Sowerby, Zool. Jour, iv, 307. 



Reeve, Icon. sp. 29. Romer, Conch. Cab. 104, t. 14, f. 

 12, 13. 



