XXXIV APPENDIX. 



Obs. A pretty little Olive, of a very regular oval 

 fonn, from the west coast of North America} its 

 smooth columella, callous at the upper part, and 

 having two small folds at the base, is its principal 

 characteristic mark. 



2333. OLIVA COLUMELLARIS. 



O. testa oblongA, depress^, fusca, apice, basi, fasciis- 

 que duabus albidis ; labio columellari albo, incras- 

 sato, calloso ', callo superne inter superiorem labii 

 externi partem et spiram interposito; plica unici 

 ad basim internam columellae; aperturd superne 

 acuta, subtus eflfusft, margine albido ; operculo te- 

 nui, lanceolato, corneo. Long. ~-^ lat. ,V unc. 

 Obs, The singularly incrassated, callous upper 

 part of the inner lip separating the spire from the 

 upper part of the aperture, gives to this shell a very 

 extraordinary appearance, and forms the character- 

 istic feature of the species. The inside of the aper- 

 ture is dark brown, with a single, nearly central yel- 

 lowish band. 



2467. CONUS CINGULATUS. 



C testa subcylindraceo-oblong^, ventricosiuscula, 

 alba, pallide roseo nubeculata ; spira sulcata, an- 

 fractuum marginibus elevatis : anfractu ultimo 

 supra infraque sulcato, medio cingulo planato ; 

 columella, basi subumbilicattl ; long. 2 unc. lat. 

 1 iV unc. 



Obs. This is a very delicate Cone, which we do 

 not find described by Lamarck nor figured in the 

 Encyclopaedia ; it approaches nearly in shape to Co- 

 nus buUatus, it is white with delicate rose-coloured 

 irregular markings J its spire, as well as the upper 

 and lower extremities of the last volution, is deeply 

 grooved. 



