255 



4. Corynotrypa delicatula (James) a 



5. Corynotrypa inflata (Hall) a 



6. Corynotrypa turgida Ulrieh a 



7. Crinoid segments aa 



8. Dalmanella testudinaria (Dalman) aaa 



9. Diploelema trentonense Ulrieh r 



10. Eridotrypa cf exigua r 



11. Gastropod fragments r-c 



12. Hallopora angularis (Ulrieh.) r 



13. Hemiphragma tenuimnrale Ulrieh r-c 



14. Isotelus gigas de Kay r-e 



15. Leptaena eharlottae W. & S a 



16. Leptaena unicostata (M. & W) . . . aa 



17. Lioclema vetustum (Bassler) r 



18. Mitoelema? mundulum Ulrieh c 



19. Nematopora ovalis Ulrieh r-e 



20. Orthoeeras fragments r 



21. Ostraeod fragments r-c 



22. Pachydictya acuta (Hall) r-c 



23. Pachydictya pumila Ulrieh r 



24. Pianodema subaequata conradi (Winchell) r 



25. Platystrophia trentonensis n. sp c 



26. Plectambonites sericeus (Sowerby) a 



27. Prasopora n. sp c 



28. Prasopora conoidea Ulrieh r-e 



29. Prasopora insularis Ulrieh aa 



30. Prasopora simulatrix Ulrieh a 



31. Rafinesquina alternata (Emmons) c 



32. Rafinesquina deltoidea (Conrad) a 



33. Rhinidietya sp 2 



34. Rhinidietya paupera Ulrieh c 



35. Rhynchotrema increbescens' (Hall) r 



36. Stigmatella n. sp aa 



7. Interval from top of High Falls to lop of Mill Dam Falls. 



From these thin-bedded fossiliferous strata were collected the following 

 species : 



