Figs. 1,2. 
3, 4. 
7-9. 
10, 11. 
12, 13. 
16, 17. 
344 
EXPLANATION OF PLATE XXIII. 
CARICELLA PLICATA Whitf. (p. 182). 
Views of the opposite sides of the specimen described. 
PLEUROTOMA FARMINGDALENSIS Whitf. (p. 185). 
Two views of the type specimen showing all there is preserved of the cast. 
TURRITELLA PUMILLA Gabb (p. 187). 
Two views of a specimen presumed to be of this species. Acad. Nat. Sci., Phila. 
PLEUROTOMARIA BRITTONI Whitf. (p. 188). 
Lateral, vertical, and basal views of the onl y cast observed. 
ROSTELLITES BICONICUS Whitf. (p. 188). 
Two views of a large characteristic specimen. showing the features of the aperture very 
distinctly. 
BULLA CONICA Whitf. (p. 189). 
Two views of a very perfect cast from Shark River. Collection of Columbia College. 
VOLUTODERMA INTERMEDIA Whitf. (p. 184). 
Front view of the best cast observed, showing the three plications. 
Outline of a fragment showing the imprint of the exterior surface on the inside of the 
outer volution. 
ROSTELLARIA NOBILIS Whitf. (p. 186). 
Two views of the cast described. 
