Prossek — Hamilton and Chemung Series. 115 



1. Tropidoleptm carmat/us (Con.), Hall. (a) 



2. Cho/ietes coronata (Con.), Hall. (c) 



3. Chonetes mucronata, Hall. (it) 



4. Spirifer granulosus (Con.), Hall and Clarke. (a) 



5. Spirifer audacnlus (Con.), Hall and Clarke (?). (r) 



Internal impressions. 



6. Spirifer mucronatus (Con.), Bill. (rr) 



7. Stropheodonta, sp. (part of an internal impression), (rr) 



8. RhyTwlumellcty sp. (rr) 



9. Orthis, sp. ( it) 



10. Productella, sp. (rr) 



11. An impression of a Terebratuloid. (rr) 



12. Ambocodia wmhonata (Con.), Hall. (it) 



13. Athyris (Spirit/era) spiriferoides (Eaton), Hall. (rr) 



14. Cyrtina Hamiltonensis, Hall. (rr) 



15. Orthotheies Chemung ensis (Con.), Hall and Clarke, (rr) 



16. Orbiculoidea, sp. (rr) 



External impression of the dorsal valve. 



17. Nuoula bellistriata (Con.), Hall. (r) 



18. Niiadites oblongatus, Con. (rr) 



19. Nuculites triqueter, Con. (r) 



20. Leda rostellata (Con.), Hall. (rr) 



21. Leda diver sa, Hall. (rr) 



22. Palaioneilo constricta (Con.), Hall. (c) 



23. Palceoneilo muta, Hall. (rr) 



24. Palaioneilo emarginata (Con.), Hall. (rr) 



25. Palwoneilo tenuistriata, Hall. (rr) 



26. Modiella pygmcea (Con.), Hall. (rr) 



27. Microdoii (Cypricardelld) bellistriatus, Con. (rr) 



28. Paracyclas tenuis, Hall. (rr) 



29. Modiomorpha mytiloides (Con.), Hall. (rr) 



30. Cimitaria, sp. (rr) 



31. Grammysia arcuata (Con.), Hall. (rr) 



32. Grammysia obsoleta, Hall (?). (rr) 



Internal impressions poorly preserved. 



33. Schizodus appressus (Con.), Hall. (r) 



34. Goniophora rugosa (Con.), S. A. Miller. (rr) 



35. Phthonia cylindrica, Hall. (rr) 



