PLATE LIV. 
PAGE 
Fig. 1. Odostomia (Chrysallida) melaxoidis (Conrad) 220 
1. Ventral view. St. Mary's River. Cornell University. 
Fig. 2. Pyramideixa (Chrysallida) graxui.ata (H. C.Lea) 220 
2. Ventral view of type specimen. Petersburg. Virginia. Acad. Nat. 
Sci., Phila. 
Figs. 3, 4. OnosTOMiA co.^oidea (Brocchi) 219 
3. Ventral view. Jones Wharf. 
4. Ventral view. St. Mary's River. 
Fig. 5. OnosTOMiA (Evai.ia) mariaxa n. sp 221 
5. Ventral view. St. Mary's River. 
Fig. 6. Ono.sTOMiA (Syrnola) marylanpica n. sp 221 
G. Ventral view. St. Mary's River. Cornell University. 
Figs. 7, 8. Odostoma (Pyrgulina) calvektexsis n. sp 221 
7. Ventral view. Plum Point. 
8. Ventral view of another specimen. Same locality. 
Figs. 9, 9a. Etjlimella (Anisoctcla) MARYLAxmoA n. sp 222 
9. Ventral view. St. Mary's River. 
9a. Nucleus of the same specimen, much enlarged. 
Fig. 10. TuRBONiLLA (CiiEMNiTziA ) NiviA Stimpson 222 
10. Ventral view. St. Mary's River. 
Figs. 11, 12. TuRBONiLLA (Chemnitzia) nivea Stimpson var 223 
11. Ventral view. Cove Point. 
12. Ventral view. St. Mary's River. 
Figs. 13, 14. TuRBON'iixA (Pyrgiscus) interrupta (Totten) 224 
13. View of specimen from Greensboro. 
14. Ventral view. St. Mary's River. 
Fig. 15. Tttrbonilla (Tragula) gubernatoria n. sp 224 
ID. Ventral view. Governor Run (lower bed). 
