45 . . 



MARGINELLA LARVATA, Tab. 16, fig. 12. 



Ovate, thick, gibbous above on the labrum ; spire obsolete ; la- 

 brum without a varix, margin acute. 



Syn. M. OVATA, M. SEMEN, (young) Lea* Con. p. 178, pi. 6, 

 /. 190, 191. OLIVA MINIMA?/. 200. 



Locality. Claiborne, Alab. No. 3, first ed. p. 33. 



MARGINELLA CRASSILABRA. Tab. 13, fig. 13. 



Subovate, thick ; spire slightly elevated ; suture indented and 

 margined beneath by a prominent line ; apex obtuse ; varix on the 

 outer lip very thick and extending upon the spire ; lip with very 

 numerous crenulations within ; columella with 9 or 10 folds. 



Syn. M. ANATINA, Lea, Con. p. 176, pi. 6, /. 186. 



Locality. Claiborne, Alab. 



The whorls of this species are slightly flattened above, and 

 the deposit on the spire is also continued widely over the labium ; 

 the folds cover a great portion of the columella, and the superior 

 ones are slightly deflected. No. 3, first ed. p. 33. 



MARGINELLA HUMEROSA, Tab. 16, fig. 14. 



Ovate, ventricose ; spire very short ; labrum much thickened, 

 margin straight, minutely crenulated within ; columella with 4 

 folds, the two inferior ones much the largest. 



Syn. M. CRASSILABRA, Lea, Con. p. 177, pi. 6, fig. 188. 



Locality. Claiborne, Alab. 



MARGINELLA COLUMBA. Tab. 16, fig. 16. 



p 



Ovate ; spire rather elevated ; labrum not greatly thickened, 

 regularly arcuated ; columella rectilinear, with 5 regular folds, the 

 4 inferior ones subequal. 



M. OOLUMBA, Lea, Con. p. 177, pi 6. /. 187. 



Locality. Claiborne, Alab. 



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