° AMERICAN JOURNAL 



2. Melampus bidentatus, Say. 



Plate 18, figure 5. 



Obovate, epidermis longitudinally wrinkled, with very minute 

 revolving striae ; spire short, obtuse, suture distinct ; whorls 6, 

 the last obtusely angulated near the suture ; aperture long anil 

 narrow, lip with or without laminae within, when present some- 

 times terminating in an obtuse white callus running parallel with 

 and slightly within the margin ; parietal wall and columella each 

 with a fold. Horn color or brownish, with generally four or 

 five narrow reddish bands. 



Length 10 mill., diam. 5*5 mill. 



Whole Atlantic Coast of the United States. 



3. Melampus flavus, Gmelin. 



Plate 18, figure 6. 



Obconic, smooth ; spire short, convex, suture slightly impres- 

 sed ; whorls 9-10 ; aperture narrow, lip with about ten transverse 

 ribs within, parietal wall and columella each with a prominent 

 fold. Chestnut color, with three equidistant revolving light 

 colored bands. 



Length 13, diam. 8*6 mill. 



Florida. (From West Indies.) 



4. Melampus coffea, Linneus. 



Plate 18, figures 7, 8. 



Obconic, solid, smooth and shining, with microscopic revolv- 

 ing lines ; spire short conic, apex black, pointed ; whorls 9-10, 

 the last angulated obtusely below the suture ; aperture narrow, 

 lip thickened within, with from 15-22 transverse laminae, colu- 

 mella with a prominent fold, and two teeth on the parietal wall. 

 Dark brown with three or four white revolving bands. 



Height 19, diam. 10 mill., usually smaller. 



Florida (from West Indies.) 



