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38 NINETEENTH ANNUAL REPORT OF THE REGENTS. 



I. Contributions to Palaeontology — continued: 



2. Observations on the Genus Streptokhynchus, continued from 



the Sixteenth Report. 



3. On the Genus Strophodonta. 



4. On the Genus Chonetes, with a list of the species known in 



the New York formations. 



5. On the Genera Productus, Strophalosia, Aulosteges and Pro- 



DUCTELLA. 



6. On the Genera Spirifera, Cyrtina and allied genera. 

 1, On the Genera Athyrus, Merista and Meristella. 



8. Note upon the Genus Zygospira, and its relations to Atrypa. 



9. On the Genera Pentamerus and Stricklandia, and their sup- 



posed relations with Rensselaeria. 

 10. On the Genera Terebratula, Centronella, Cryptonella, etc. 

 •11. On the Genus Tropidoleptus. 



12. On the Genus Eichwaldia. 



13. Miscellaneous. 



14. Introduction to the Study of the GRAPTOLiTiDiE, with a list of the 



species known in the Palaeozoic formations of Canada and 

 the United States. 



15. Notes upon the Geology of some parts of Minnesota. 



16. Note upon the structure of the mountain region in the 



northern parts of Georgia and Alabama, and the adjacent 



parts of Tennessee. 

 It. Note upon the Geological relations of the oil-bearing strata 



of Canada West. 

 18. Index to geological and palaeoiitological subjects in the 



Reports on the State Cabinet. 



