142 SPECIFIC 



Specimen white with purplish brown points and 

 spots, and five whitish transverse bands irregularly 

 spotted ; interior surface polished, lilac j aperture 

 broad ; beak open, hollow. 



Inhabits the American and Indian Ocean, 

 This species resembles a Murex, but the canal 

 is wide and not contracted at its entrance to the 

 aperture, the latter gradually, and not, as in a true 

 Murex, suddenly opening into the beak ; the outer 

 lip is nearly straight, and not compressed towards 

 the columella at the lower part of the body. This 

 shell cannot therefore be considered as belonging 

 to Murex, or any other than the genus Bulla ; — no 

 other, besides these two, possessing an elongated 

 straight beak. 



Fig. 7. B. Ampulla. 



Shell rounded, opaque ; vertex unibilicate. 



Lister Conch, tab. 713. fig, GD. 



Specimen pale reddish brown, mottled with ci- 

 nereous sj)ots, and marked with two darker bands j 

 columella covered with the inner lij), white. 



Inhabits all seas. 



The variety to which the figured specimen be- 



