GASTROPODA— C0LUMBELLID7E—BUCCINID2E. 76 1 



Family Columbellhle Troschel. 



CXLVI. Columbella Lamarck. 



Small, ovate or fusiform shells, with narrow aperture, lirate or 

 denticulate outer lip. Tertiary-Recent. 



517. C. (Astyris) communis (Conrad). (Fig. 1107, c.) Miocenic. 



Rather high spire, smooth or with spirals visible only under 

 lens, except on spindle. Outer lip strongly denticulate within. 



Chesapeakean of Maryland and New Jersey. 



Family Buccinhle Troschel. 

 CXLVII. Buccinum Linn. 

 Stout inflated shells, smooth or ribbed and spiraled ; spire short, 





Fig. 1 108. Pyrula penita, X %• Fig. 1109. Buccinofusus parilis, X Yi- 



(After Conrad. ) (Md. Survey.) 



aperture wide, anterior canal short; outer lip sharp, thin, smooth; 



inner lip with callus. Tertiary-Recent. 



518. B. mississippiensis Conrad. Oligocenic. 



Small, spire rather high, with distant narrow ribs and raised 

 alternating spirals. Outer lip lirate within ; columella striate. 



Vicksburgian of Mississippi. 



