146 Panama Mdls, MvnicmM. 



Panama, Gulf of iNiooya,: and we^«rn coast of 



Mexico ; Hinds I Eeeve. 

 Panama; Jay. 

 Panama ; C. B. A.1 

 8 specimens were obtained. 



179. Pleurotoma pallida. 



Synonymy. 



Pleurotoma pallida Sowb. in Proo. ZooL Soc. Lond. p. 137. Dec. 1833. 



,— Mull. Synop. Nov. Test. Viv. p. 113. May 183ft. 



Reeve ConcL. Icon. pi. 16. f. 134. Aug. 1843. 



Station, — -A sandy muddy, floor at tbe depth. c£ 13 fathoms ; 

 Cuming I Sowerby : also Eeeve. 

 Habitat. — Puerto Portrero; Oumingl Sowerby: also Eeeve: 

 also Miiller. 

 Panama ; C. B. A. 1 

 12 specimens in various stages of growth were obtained. 



180. Pleurotoma ri^ida. 



Synonymy. 



Clavatula rigida Hinds in Proc. Zool. Soc. Lond. p. 45. Mar. 1843. 



Hinds inVoy. Sulph. Moll. pi. 7. f. 18. 1844. 



Pleurotoma • Reeve Conch. Icon. pi. 25. f. 216. Oct. 1845. 



Station. — Unknown. 



Habitat. — Panama ; Hinds \ quoted by Eeeve. 



Panama ; C. B. A. 1 

 We collected 20 specimens of this species in some calcareous 

 sand near the sea wall of Panama. 



181. Pleurotoma rudis. 



Synonymy. 

 Pleurotoma rudis Sowb. in Proc. Zool. Soc Lond. p. 134. Dec 1833. 



