12 



Sowerby, Genera, f. 3, 4, 5. Blainville, Man. de Malacol. 

 574, t. 79, f. 5. Reeve, Conch. Syst. t. 20, f. 4, 5. 

 PJioJas Juans, Chemnitz, Conch. Cab. x. 364, t. 172, f. 1678, 



1679, 1788. Wood, Index Test., 2d edit., t. 2, f. "II. 

 Fistulana rupestris, Bosc. Hist. Nat. des Coq. ii. 205, 1824. 



West Indies. 



5. R. denticulata, Deshayes, London Zool. Proc. 327, 1854. 



Columbia. 



6. R. dentifera, Dufo, Ann. des Sc. Nat. 221, 1840. 



Seychelles and Admiral Is. 



7. R. difi&cilis, Deshayes, London Zool. Proc. 328, 1854. 



Western hidia. 



8. R. dubia, Pennant, Brit. Zool. iv. 82, t. 44, f. 19, 1777. 



Donovan, Brit. Shells, iii. t. 108. Wood, Gen. Conch. 



102, t. 25, f. 2, 3. Wood, Index Test., edit. 2, t. 2, f. 



23. Deshayes Traite Elem. i. pt. ii. 34, t. 2, f. 4, 5. 



Philippi, Wiegmann's Archiv. t. 7, f. 1 Adams' Genera, 



t. 91, f. 2. 

 Pliolas jmsilla, Poli, Test. utr. Sicil. i. 50, t. 7, f. 12, 13, 



1791. 

 CrastrocJicena Pholadia, Turton, Conch. Dithyra, 18, t. 2, f. 8, 



9, 1822. Brown, Brit. Conch, t. 48, f. 13, 14. 

 Chama parva, Da Costa, Brit. Conch. 234, 1778. 

 FJwlasfaba, Pultney, Dorsetshire Cat. 27,' 1779. 

 Mytilus amhiguns, Dillwynii, 304, 1817. 

 G-astrocJiceyia Mans, Fleming, Brit. Anim. 458, 1828. 

 Gastroclioina cimeiformis, Philippi, Enum. Moll. Sicil. i. 2, 



1836. 

 G-astrochoina Polii, Philippi, Enum. Moll. Sicil. ii. 3, 1844. 

 G-astrocha^na modiolina, Lamarck, Anim. s. Vert. v. 447, 1818. 



Sowerby, Genera, f. 1, 2. Sowerby, Conch. Man. f. 52. 



Crouch, Introd. Lamarck, t. 2, f. 12. Guerin's Magazine, 



t. 69, 70, 71, 1843. Reeve, Conch. Syst. t. 50, f. 1, 2. 



Leach, Moll. Gt. Brit. t. 3, f. 3. Forbes and Hanley, 



Brit. Moll. t. 2, f. 5—8. Woodward, t. 23, f. 15. 



Pngland, Mediterranean. 



9. R. huiuills, Deshayes, London Zool. Proc. 327, 1854. 



Philipj)ines. 



10. R. hyalina, Sowerby, London Zool. Proc. 22, 1834. 



Lord Hood's I. 



11. R. impressa, Deshayes, London Zool. Proc. 327, 1854. 



Hah.—? 



