ARCA. Panama Shells, 257 



412. Pectunciiliis maciilatus ? 



Synonymy. 



Pectunculus maculatus Brod. in Proc. Zool. Soc. Lond. p. 126. June 1832. 



- Reeve Conch. Icon. pi. 1. f. 4. Feb. 1843. 



/Station. In fine gravel in 11 fathoms water; Cuming! 

 Broderip. 



Habitat. Puerto Portrero ; Cuming ! Broderip : also Eeeve. 

 Panama ; C. B. A. ! 



We obtained only one specimen. It is nearly covered with 

 very large irregular spots and radiating lines of dark red ; it is 

 also very convex at the timbones, and in both of these charac- 

 ters appears to differ from the P. maculatus as described by Mr. 

 Broderip, and as figured by Mr. Eeeve. 



413. Area alterRata. 



Synonymy. 



Byssoarca alternata Sowb. in Proc. Zool. Soc. Lond. p. 17. Feb. 1833. 



- Mull. Syn. Test. Viv.p. 184. 1830. 

 Area Reeve Conch. Icon. pi. 13. f. 88. Apr. 1843. 



Hanley Descr. Catal. p. 156. 1845 ? 



- Orb. Voy. Amer. Mend. Moll. p. 638. 1846. 



Station. .Attached to stones, on a rocky bottom, at the 

 depth of 12 fathoms ; Cuming ! Sowerby : also Reeve. 



Habitat. West Columbia ; Cuming ! Sowerby : also Reeve. 



Equador; Cuming! Orbigny. 



West Columbia ; Hanley. 



Mazatlan ; E. Jewett ! Gould MSS. 



Panama and Taboga ; C. B. A. ! 

 4 specimens were collected. 



414. Area aviculoides I 



Synonymy. 

 Area auriculata Sowb. in Proc. Zool. Soc. Lond. p. 20. Feb. 1833. 



