COLUMBELLA. Panama Shells. 



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. Columbella Boiviiiii. 



Synonymy. 



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

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



f. 19, 20. 1843. 



___ Sowb. Thes.Conch.p.l26.No. 43. 



pi. 38. f. 100. 1S44. 



_ - DesL. in Lam. An. sans Vert. 10. 



281. No. 28. 18 44 - 



Station. WQ found these mollusks between half and three 

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

 cavities of the rocks. 



Habitat. Unknown ; Kiener. 



Gulf of Nicoya ; Hinds ! Sowerby. 

 Gulf of Nicoya ; Deshayes : also Jay. 

 Panama and Taboga ; C. B. A. ! 



Our specimens were obtained chiefly on the rocks in front of 

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

 duals were quite numerous, but only 50 adult specimens were 

 taken alive. 



so. Colnmbella 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- 



