EXPLANATION OF PLATE XII. 
TURBINOPSIS PLICATA Whitf. (p. 104). 
Figs. 1,2. Two views of a specimen showing the features of the species. Acad. Nat. Sci., Phila. 
TURBINOPSIS CURTA Whitf. (p. 102). 
3,4. Two views of a small cast showing the short spire. 
5,6. Views of a larger specimen. Acad. Nat. Sci., Phila. 
TURBINOPSIS HILGARDI Conrad. ? (p. 100). 
7-9. Views of three imperfect casts referred to this species. 
TURBINOPSIS ELEVATA Whitf. (p. 102). 
10,11. Two views of an imperfect cast. . 
12, An imperfect cast showing the isolated spots on the columella. 
13,14. Views of a more slender cast. All from the Acad. Nat. Sei., Phila. 
TURBINOPSIS MAJOR Whitf. (p. 103). 
15,16. Two views of a small specimen. 
21,23. Three views of a large cast. 
TURBINOPSIS ANGULATA Whitf. (p. 101). 
17,18. Two views of a cast showing the specific features. 
MOREA NATICELLA Gabb (p. 97). 
19,20. Two views of the type specimen. Acad. Nat. Sci., Phila. 
CANCELLARIA (MERICA) SUBALTA Conrad (p. 95), 
24. View of the shell somewhat restored. 
25. Enlargement from the colamellar lip. Acad. Nat, Sci., Phila, 
322 
