EXPLANATION OF PLATE XXXII. 
VoOLuTA NEWCOMBIANA Whitf. (p. 211). 
Figs. 1,2. Two views of a specimen of the ordinary form. 
3. View of a shorter spired form showing cavities of the columellar folds. These are from 
the collection Am. Mus. Nat. Hist. 
VoLutTa VESTA Whitf. (p. 210). 
4,5. Two views of an imperfect cast. 
6. Represents the lower part of specimen shown by the faint line on Fig. 4, removed to show 
the folds on its lower surface. Am. Mus, Nat. Hist. 
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