SHERBURNE HORIZON WEST OF CHENANGO VALLEY 43 < 



of Xew York as well. The fifth column shows the species also found in 

 the Naples beds^ and the sixth those also found in the Chemung. In 

 column 7 the forms also occurring in the lowan region are listed, while 

 the final column, 8, contains those also found in the eastern Ithaca. 



In the following table, rr = very rare ; r = rare ; re = fairly common ; 

 c = common ; cc = very common ; x = present. 



Table II. — Ithaca Species of Ithaca 



Coelenterata 



1. Stromatopora 



2. Aulopora 



3. Cladochonus 



4. Zaphrentis simplex Hall 



Bryozoa 



5. Callopora sp 



6. Cystodictya meeki Nich 



Brachiopoda 



7. Ambocoelia umbonata Conrad. 



8. Atrypa reticularis Linne 



9. A. spinosa Hall 



10. Camarotoechia contracta Hall. . 



11. C. eximia Hall 



12. C. stephani Hall 



13. Chonetes lepidus Hall 



14. C. scitulus Hall 



15. Craniella hamiltoniae 



16. Cryptonella eudora Hall . 



17. Cyrtina hamiltonensis Hall . . . . 



18. Liorhynchus mesicostalis Hall. , 



19. Lingiila complanata H. S. W. . 



20. L.ligeall3[\ 



21. L. punctata Hall 



22. L. spatulata Hall 



23. Orbiculoidea neglecta Hall 



24. Productella hallana "Walcott . . 



25. P. speciosa Hall 



26. Pugnax pugnus (Martin) 



27. Roemerella grandis ? Hall 



28. Schizophoria impressa Hall. . . . 



29. Spirifer angusta Hall 





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3 



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4 



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X 

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X 

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X 

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X 



X 

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X 

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X 



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X 

 X 



X 



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X 

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X 

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