148 SPECIFIC 



Specimen cinereous, with one whitish band ; 

 lips white and highly polished ; outer lip toothed 

 internally ; obliquely plaited. 



Inhabits the European Seas, 



Fig. 5. B. patulum. 



Shell muricate ; outer lip crenate ; columella 

 flattened, rather concave, sickle-shaped. 



Lister Conch. Tab. 989. Fig. 49. 



Specimen white, with dark brown transverse 

 striae, lines, and tubercles ; the brown striae more 

 or less confluent in parts, so as to form longi- 

 tudinal dark rays and transverse belts ; within 

 bluish, and shewing the external white belts 

 through the substance of the shell ; columellar lip 

 bright orange. 



Inhabits Africa and America. 



Fig. 6. B. spiratnm. 



Shell smooth ; whorls separated by a broad 

 canal; columella abrupt, perforated. 



Lister Conch. Tab. 981. Fig. 41. 



Specimen white, with ochraceous spots ; aper- 

 ture ovate, emarginate at the top ; umbilicus 



