OF CONCHOLOGY. G5 



to T, of the spire, with convex vertical sides below, and oblique 

 and concave above, with an obsolete obtuse rib on the angle, 

 ■which becomes prominent on four volutions below the apex ; re- 

 volving lines close,- alternated ; suture profoundly and widely 

 excavated ; labium profoundly concave, labrum slightly thick- 

 ened within on the submargin, and obscurely ridged or striated; 

 aperture profoundly patulous ; beak recurved. 



Fulgiir incile, Conrad, Auier. Journ. ScL, vol. xxiii, p. 343. 



Busycon Conradii, Tuomey and Holmes, Plio. Foss. of South 

 Carolina, p. 147, pi. 29, fig. 4. 



Locality. — Yorktown, Va., Sumpter, S. C. 



This is the largest, thickest, and most ventricose of the fossil 

 species, and one that I have not found north of Yorktown. 



BUSYCON, Bolten. 



13. maximum, Conrad. — PL 5, fig. 2. 



Description. — Pyriform, thick ; whorls 7, apex exserted, third 

 and fourth volutions tuberculated on angle near the base of the 

 whorls ; upper part of the whorls oblique, and slightly concave ; 

 lower part convex ; penultimate whorl obtusely rounded on the 

 low^er half; body whorl moderately ventricose, with distant, well 

 marked, longitudinal, subimbricate lines, on some of which an 

 obsolete acute spine occurs on the angle or shoulder ; revolv- 

 ing lines fine, close, alternated and obsolete on the ventricose 

 part of the body whorl ; labium of the beak flattened ; aperture 

 patulous, swelling opposite the middle of the beak, correspondino- 

 to a spiral external ridge ; labrum striate within, strioe obsolete 

 or wanting on the middle of the lip. 



Fulgur maximus, Conrad, Miocene Foss. (cover of No. 21) 

 1839, pi. 47. 



Locality. — Y T orktown, Ya. 



This is the largest fossil species known, the one figured in 

 " Miocene Fossils " measuring 7^ inches in length. 



NATICA, Lam. 

 N. Caroltniana, Conrad. — PI. 6, fig. 3. 



Description. — Obliquely oval ; body whorl slightly depressed 

 or concave below the suture ; umbilicus patulous, with a very 

 prominent central rib ; on the body whorl obsolete revolving 

 lines. 



