OP CONCHOLOGY. 



273 



Spurious Species. 



A. parvula, Dunker, Zeit. Mai. 36, 1862. 



Ins. Chiloe, Magellan s Straits. 



This is an immature shell, probably, and certainly not an 

 Adaena. 



Subgenus MONODACNA, Eichwald. 



Faun. Casp. Mar. 1838. 



6. A, Caspia, Eichwald, Faun. Casp. 274, t. 39, f. 4. 



Reeve, Conch. Icon', sp. 96, 1845. Caspian Sea. 



7. A. pseudocardia, Deshayes, Mem. Soc. Geol. Franc, iii, 59, 



t. 1, f. 1,2, 1838. 

 A. Pontica, Eichwald, Faun. Casp. 219, 1841. Caspian Sea. 



Subgenus DIDACNA, Eichwald. 

 Faun. Casp. Mar. 1838. 



8. A. crassa, Eichwald, Zool. Spec, i, 283, 18,29. 



Faun. Caspio-Caucasica, 218, t. 39, f. 6, 1841. 

 Cardium Mchwaldi, Kryn, Bullet. Moscow, 61, 1837. 



Caspian Sea. 



9. A. trigonoides, Pallas, Reise, i, 478, 1771. 



Eichwald, Faun. Caucas. 217, t. 39, f. 5, 1841. 

 C. trilaterum, Gmelin, Reise Russl. pt. iii, 248, 1774. 

 C. lineatum, Gmelin. Caspian Sea. 



Undetermined Species of Cardium. 

 M. Deshayes has published in the Zool. Proc. 330 et seq., 1854, 

 short Latin diagnoses of the following species. Having no spe- 

 cimens, figures or comparative characters to assist me, I will not 

 attempt to classify them : 

 C. sbrrulatum, Guinea. C. .equale, Hab. — ? 



" Gossei, W. Indies. " mirabile, Philippines. 



" bicolor, Hab. — ? " debile, Chinese Seas. 



" Hudsoniense, Hudson's Bay. " transversale, Alboran. 



" tumidum, Moluccas. " PRODUCTUM, Torres Straits. 



" Mauritianum, Mauritius. " scrupulosum, Malacca. 



" festivum, New Ireland. " lobulatum, Philippines. 



Genus BUCARDIUM, Muhlfeldt. 



Entwurf, 52, 1811. 



Isocardia, Lamarck (not Klein), Prod. Syst. 86, 1799. 

 Crlossus and Grlossoderma, Poli, Test. utr. Sicil. ii, 114, 1795. 



