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ANCILLARIA 8UBGLOBOSA. Table 10, Jig. 3. 



Subglobose or suboval; spire convex, with the tip suddenly 

 exserted and subulate ; apex acute ; suture obsolete ; columella 

 profoundly callous, and projecting in the middle. 



Locality. Claiborne, Alab. Middle Tertiary. 



This singular species is perhaps the most 'ventricose of the 

 genus, but has all the characters of Ancillafia. As several in- 

 dividuals were sent among other shells collected at random, 

 they are probably abundant. 



ANCILLARIA SCAMBA. Tab. 10, Jig. 4. 



Subulate, turreted ; spire elevated ; suture obsolete ; columel- 

 la concave and callous ; aperture about half the length of the 

 shell and effuse at the base ; right lip emarginate at the superior 

 termination ; callus at the base elevated and defined by two 

 angular lines. 



Locality. Claiborne, Alab. Middle Tertiary. 



ANCILLARIA STAMINEA. Tab. 10, Jig. 5. 



Cylindrical, with strong longitudinal lines and minute re- 

 volving wrinkled striae ; a slight elevation crowns the whorls, 

 defined by a separating line ; spire very short, apex rather ob- 

 tuse; suture distinct; inferior portion of the columella with an 

 elevated profoundly striated callus, above which are three or 

 four lines revolving to the base; aperture gradually contracted 

 above and effuse at the base. 



Locality. Claiborne, Alab. Middle Tertiary. 



Of the species described by Lamarck, this shell approaches 

 nearest to A. canalifera. These two species do not correspond 

 entirely with the genus Ancillaria, as the aperture is much 

 longer, the shells are striated, and the suture is somewhat chan- 

 neled. They might constitute a separate genus by the name 

 of OLIVULA, and woukl connect Ancillaria with Oliva. 



[43] 



