10, 11. 
12-14. 
15, 16. 
17, 18. 
19, 20. 
21. 
310 
EXPLANATION OF PLATE VI. 
ODONTOFUSUS TYPICUS Whitf. (p. 66). 
. Views of casts, more or less imperfect, from Crosswicks Creek, New Jersey. 
. View of a cast from Cream Ridge, New Jersey, showing the extent of the beak. 
ODONTOFUSUS ROSTELLAROIDES Whitf. (p. 68). 
. Two views of the most perfect cast seen. 
ODONTOFUSUS SLACKI Gabb’s sp. (p. 66). 
. Opposite views of the type. Acad. Nat. Sci., Phila. 
Fusus HOLMDELENsIS Whitf. (p. 62). 
Views of opposite sides of the only. specimen seen. 
VOLUTOMORPHA (PIESTOCHILUS) MUCRONATA Gabb (p. 75). 
Opposite sides of a large specimen from Freehold, New Jersey, and front view of a smaller 
one from Crosswicks, New Jersey, the latter from the collection at Columbia College. 
VOLUTOMORPHA (PIESTOCHILUS) BELLA Gabb. (p. 74). 
Two views of a medium sized cast. 
Similar views of a large cast, probably the type. All from collection Acad. Nat. Sci. Phila. 
VOLUTOMORPHA (PIESTOCHILUS) KANEI Gabb. (p. 76). 
Two views of the type specimen. Acad. Nat. Sci., Phila 
VOLUTOMORPHA Conrapbi Gabb. (p. 71). 
Front view of the type specimen. For other figures of this and other specimens see 
Pl. vu. 
