GASTROPODA— BUCCINID2E. 

 Chesapeakean of Maryland. 



763 



CL. Neptunea Bolton. 



Fusoid shells with long, slender, many-whorled spire, and rather 

 short, often bent canal. Eocenic-Recent. 



522. N. bella (Conrad). Eocenic. 

 Small, high spired ; whorls round ; suture depressed ; canal short, 



strongly curved; ribs narrow, round, widely separated; spirals, 

 fine, regular. 



Claibornian of Alabama. 



CLI. Nassa Martini. 



Differs from Buccinum in its higher spire, shorter aperture 

 with short, reverted canal, and Urate outer lip. Cretacic-Recent. 



523. N. trivittatoides (Whitfield). (Fig. 11 12, a.) Miocenic. 

 Small (half an inch or less in length), with moderately high 



spire and faint sutures; whorls with strong ribs, cancellated by 



Fig. 1 1 12. a, A T assa trivittatoides, X 5 > ^> c i 

 N. peralta, X 2 - ( Md - Survey. ) 



FlG. 1 1 13. Nassa bidentaia, 

 X4-3- ( After Dall.) 



continuous strong spirals; canal very short; outer lip thick; lirae 

 strong; columella with faint plaits. 



Chesapeakean of Maryland and Shiloh of New Jersey. 



524. N. peralta (Conrad). (Fig. 1112, b.) Miocenic. 

 Larger and more elongate than the preceding; the ribs crowded 



and smooth; interspaces with fine spirals; a single small spiral 

 beads the ribs just below the suture. 

 Chesapeakean of Maryland. 



525. N. vibex Say. Pliocenic-Recent. 

 Rather small ; suture not impressed ; whorls almost flat, ribs and 



spirals obsolete or very faint; aperture subcicular. 



