PLATE LXVII 



PAGE 



Figs. 1-3. PLETJROTOMARIA (GYKOMA) CAPILLARIA Conrad 661 



1. Ventral view of large individual. X 2. Hamilton formation, New 



York. 



2. Dorsal view of small shell. Jennings formation, Parkhead member, 



Sideling Hill Creek, 2% miles above mouth, 1700. 



3. Exterior of portion of shell showing ornamentation and slit band. 



Associated with preceding. 



Fig. 4. HOBMATOMA BisTRiATA n. sp 663 



Dorsal view of type. X 2. Jennings formation, Parkhead member, 

 Sideling Hill Creek, 2% miles above mouth, 1700. 



FigS. 5-8. ECTOMAHIA MARYLANDICA n. SP 663 



5. Dorsal view of shell. X 2. The apical angle is too large in drawing. 



Western Maryland Railroad, 2 miles west of Pawpaw, 1597. 



6. Dorsal view of shell. X 2. Sideling Hill Creek, 2y 2 miles above 



mouth, 1700. 



7. Dorsal view of type specimen. Western Maryland Railroad, 2 miles 



west of Pawpaw, 1597. 



8. Cast of exterior of shell. The apical angle is much too small, due to 



cast. Same locality. 

 Jennings formation, Parkhead member. 



Figs. 9-12. ECTOMARIA ECCLESI.E n. sp 664 



9. A group of shells, natural size. Near Oakland. 



10. Dorsal view. X 3. Deer Park. 



11. Part of the spiral with the concentric striae obsolete. X 5. Near 



Oakland. 



12. An enlargement of part of the spire showing the surface orna- 



mentation. X 5. Polish Mountain. 

 Jennings formation, Chemung member. 



Figs. 13-16. BELLEROPHON NACTOIDES n. sp 665 



13-15. Dorsal, ventral, and side views of cast of exterior. National 



Road, west of Tonoloway Ridge. 

 16. Enlargement of portion of surface. X 3. Same locality. 



Jennings formation, Woodmont member, Ithaca fauna. 



Figs. 17-20. BELLEROPHON CLARKI n. sp 666 



17-18. Dorsal and side view of type specimen. X 1%. Williams Road, 

 Polish Mountain, 1660. 



19. Dorsal view. Western Maryland Railroad, 2 miles west of Paw- 



paw, 1597. 



20. Enlargement of exterior showing ornamentation. Polish Moun- 



tain. 



Jennings formation, Parkhead member. 



Figs. 21, 22. BUCANOPSIS M^RA (Conrad) 667 



Dorsal and side view of shell. Chemung formation, New York. 



Figs. 23-25. STRAPAROIXUS MARYLANDICUS n. sp 668 



23. Internal cast of type, dorsal view. 



24. Lower surface of specimen illustrated in fig. 23, showing large 



umbilicus. Sideling Hill Creek, 2% miles above mouth, 1700. 



25. Upper view of small shell. Williams Road, Polish Mountain, 1661. 



Jennings formation, Parkhead member. 



Fig. 26. PH^XEROTINUS LAXUS (Hall) 669 



Internal cast. Parkhead member, Sideling Hill Creek, 2V 2 miles above 

 mouth, 1700. 



Figs. 27-29. CYCLONEMA COXCIXNUM Hall 670 



27. Dorsal view showing ornamentation. Chemung member, Town 



Creek, 2228. 



28. Dorsal view of smaller specimen. Parkhead member, Western 



Maryland Railroad, 2 miles west of Pawpaw, 1597. 



29. Internal cast. Parkhead member, Sideling Hill Creek, 2 l / 2 miles 



above mouth. 



Jennings formation. 



150 



