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I SOLARIUM TRICOSTATUM. Tab. 17, fig 10. 



Subconical, with angular whorls and 3 or 4 prominent crenula- 

 ted revolving carinse; suture channelled; base with revolving 

 lines ; umbilicus small, carinated within near the margin. 



Syn. S. GKANULATUM, Lea, Con. p. 122, pi. 4, jig. 111. 



Locality. Claiborne, Alab. 



This species is rare. The name granulatuin being used by 

 Lamarck, I am obliged to substitute another. 



SOLARIUM LINEATUM. Tab. 17, fig. 12. 



Subconical ; whorls convex, with smooth regular prominent re- 

 volving lines ; area of the suture furrowed ; apex prominent ; base 

 convex, lineated ; margin of the umbilicus not crenulated ; aper- 

 ture orbicular. 



Syn. TDKBO LINEATUS, Lea, Con. p. 120, pi. 4, /. 116. 



Locality. Claiborne, Alab. Rare. No. 4, first ed. p. 44. 



PLEUROTOM A ALTERNATA. Tab. 17, fig. 13. 



Fusiform, with revolving close unequal wrinkled lines ; whorls 

 angular, carinated in the middle ; carina on the superior whorls 

 crenulated ; beak produced. 



Syn. I P. LESUERII, Lea, COM, p. 137, pi. 4, /. 133. 



Locality. Claiborne, Alab. No. 4, first edition, p. 46. 



! PLEUROTOMA TABULATA. Tab. 17, fig. 14. ? < 



Turrited, longitudinally undulated ; angle of the whorls carina- 

 ted ; revolving stritu* minute, cancellated by the lines of growth; 

 umbilicated. 



Syn. P. C.KLATA, Lea, Con. p. 132, pi. 4, fig. 123. 



Locality. Claiborne, Alab. 



This species most resembles the P. dentata, Lam. but is very 

 distinct. No. 4, first ed. p. 46. 



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