63 AMERICAN JOURNAL 



C. engonata, Conrad. — PI. 4, fig. 8. 



Description. — Short-fusiform, longitudinally ribbed, with 

 prominent revolving lines, about 12 in number, from the 

 shoulder to base; whorls 5 ; spire conical, scalariform ; aper- 

 ture lunate; columella throe-plaited, the middle one very 

 oblique. 



G. engonata, Conrad. — Jo urn. Acad. Nat. Sciences, Vol. 

 VIII., p. 188. 



Locality. — Calvert Cliffs, Md. 

 ( J. plagiostoma, Conrad. — PI. 4, fig. 15. 



Description. — Short-fusiform, with numerous prominent ribs, 

 and distant, prominent revolving lines; spire scalariform ; 

 whorls (I, with one prominent revolving line on the flattened 

 summit; aperture more than half the shell's length; colum- 

 ella three-plaited, the superior one very prominent, and con- 

 tinued into a ridge revolving to the base; base narrow, slight- 

 ly produced and twisted ; sub-umbilicated. 



G. plagiostoma, Conrad. — Journ. Acad. Nat. Sciences, Vol. 

 VII., p. 136. 



Locality. — James Eiver, near Smithfield, Virginia. 

 C. SCALARINA, Conrad. — PI. 4, fig. 17. 



Description. — Sub-fusiform; volutions 6; ribs numerous, 

 prominent; revolving lines very prominent, distant, four on 

 the penultimate whorl below the angle, and four or five close, 

 line lines above; spire scalariform, prominent; aperture less than 

 half the shell's length; labrum without lines, but with slight 

 furrows, corresponding to the ribs opposite ; columella three- 

 plaited, the two lower folds approximate; base slightly pro- 

 duced, sub-acute. 



Locality. — Virginia ? 



MURICID.E. 

 BUSYCON, Bolten. 

 13. alveati'M, Conrad. — PI. 3, tig. 7. 



Description. — Pyriform or sub-fusiform; substance mode- 

 rately thick; spire prominent, scalariform, angle of whorls 

 situated much above the middle, carinated on the angle : 

 summit channelled, the canal margined by a prominent line, 

 broad on the body whorl ; space between the two revolving 

 lines slightly concave; columella with a salient angle on its 

 lower half. 



Locality. — St. Mary's River, Md. 



