iPLEUROTO'MA. Panama Shells. 141 



Pleurotoma, turricula Reeve Conch. Syst. pi. 233. f. 6. 1842. 



Reeve Conch. Icon. pi. 6. f. 49. 



(non pi. 19. f. 162.) Feb. 1843. 



Sowerbyi Reeve Conch. Icon, in " Errata" 



Pleurot. Apr. 1846- 



Station. Sandy mud at 10 fathoms depth ; Cuming ! Sow- 

 erby., 



Habitat. Bay of Montija, and Puerto Portrero ; Cuming i 



Sowerby : Miiller. 

 Taboga; C. B. A.I 



."3 specimens were obtained. 



169. Pleurotoma discors. 



Synonymy. 



Pleurotoma discors Sowb. "in Proc. Zool. Soc. Lond. p. 137. Dec. 1833. 



Mull. Synqp. Nov. Test. Viv. p. 113. May 1836. 



Reeve Conch. Syst. pi. 235. f. 14.* 1842. 



Reeve Conch. Icon. pi. 6. f. 38. Feb. 1843. 



Station. Coral sand at the depth of 17 fathoms; Cuming.! 

 .Sowerby .: also Reeve. 



Habitat. I. of Plata; Cuming! Sowerby : also Reeve. 



West Columbia-; Jay. 



Panama ; C. B. A. ! 

 We were indebted -to the hermit crabs for 5 specimens, 



170. Pleurotoma duplicata. 



Synonymy., 



Pleurotoma, duplicata 'Sowb. in Proc. Zool. Soc. Lond. 



p. 188. . . . Dec. 1833. 

 Reeve, Conch. Icon. pi. 9. f. 78. Apr. 1843. 



Station. A sandy muddy floor at 10 fathoms depth ; Cum- 

 ing ! Sowerby : also Reeve. 



* The citation in the Conch. Icon, f fig. 10. in pi 234 of Conch. Syst. is eyi- 



dently a misprint for fig. 14. 



