COLTJMBELLA. Panama Shells. 83 



"We were indebted to the hermit crabs for 36 specimens, which 

 were taken, in a more or less perfect state of preservation, about 

 two miles east of Panama. 



79. Coluinbella Boivinii. 



Synonymy. 



Colutnbella Boivinii Kiener Iconog. p. 47. pi. 11. f. 1. 



Duel, in Chenu, 111. Conch, pi. 21. 



f. 19, 20. - - - - 1843. 



Sowb.The8.Concli.p.l26.No. 43. 



pi. 38. f. 100. - 1844. 



Desh. in Lam. An. sans Vert. 10. 



281. No. 28. - - - 1844. 



Station. — We foimd these moUusks between half and three 

 quarters tide, in the margin of water left by the ebbing tide in 

 cavities of the rooks. 



Habitat. — Unknown ; Kiener. 



Gulf of Nicoya ; Hinds 1 Sowerby. 

 Gulf of Nicoya ; Deshayes : also Jay. 

 Panama and Taboga ; C. B. A. 1 

 Our specimens were obtained chiefly on the rocks in front of 

 the fortifications in the sea wall of Panama. Immature indivi- 

 duals were quite nimierous, but only 50 adult specimens were 

 taken alive. 



80. Columbella conspicua. Nov. sp. 



Shell ovate-conic: with a broad white spiral band on the 

 convexity of the whorls, on each side of which is a broad band 

 of brownish orange ; anteriorly white with irregular brown 

 spots ; with deep brown spots near the summits of the alternate 

 ridges ; with, on each whorl, nine very prominent obtuse trans- 

 verse ridges, which are obsolete at the upper part of the whorls ; 

 with coarse spiral striae, which traverse the ridges except at 

 the summit of the middle and most prominent part : apex suba- 



