PLATE LVIII, 



FiSTULIPORA CONFERTIPORA. 



PaRe 211. 



Fig. 1. An enlargement, showing the form and disposition of the cell apertures and interapertural pits; 



also one of the monticules, the centers of which are destitute of apertures. (X 6.) 



Hamilton group. Tu>o milfs east of Alden, N. T. 



Fig. 2. A still farther enlargement, showing more distinctly the form of the cell apertures, the strong 



nodose peristomes and interapertural pits. (X 18.) 



Hamilton group. Moscow, Livingston county, N. T. 

 Fig. 3 An enlargement from another specimen, showing the cell apertures slightly oval, an unusual 

 occurrence. (X 6.) 



Hamilton group. 7V>o inilet south of Darien Centre, N. T. 

 Fig. 4. An enlargement of a natural vertical section, showing the corrugated walls of the cell tubes. ( X 6.) 

 Fig. 5. An enlargement of a translucent vertical section, showing the septate cell tubes, and the form 

 and disposition of the intereellular vesicles. (X 6.) 



Hamilton group. 2Vv) miles east of Alden, N. Y. 



FiSTULIPORA SERRULATA. 



Pago 214. 



Fig. 6. An enlargement, showing the form and disposition of the cell apertures and interapertural pits ; 



also a portion of one of the monticules destitute of cell apertures. (X 6.) 

 Fig. 7. A still farther enlargement, showing more distinctly the form of the cell apertures and inter- 

 apertural pits, and the opei-cula of the ajwrluitis. (X 18.) 

 Hamilton group. York, Livingston county, N. Y. 

 Fig. 8. An enlargement of a portion of another specimen, which has the interapertural pits obsolete. (X 18.) 

 Hamilton group. Moscow, Livingston county, N. Y. 



FiSTULIPORA VARIAPORA. 

 Pago 210. 

 Pig. 9. An enlargement of a transverse section. (X 18.) 

 Hamilton group. IVestem New York. 

 Fig. 10. .\n enlargement of one of the monticules, showing the form and disposition of the cell apertures 



and intera))ertural pits. (X 6.) 

 Fig. II. An etilai'gement of a vertical section, showing the septate cell tubes, and the intercellulai' vesicles 

 forming tubuli with very closely disjmsed septa. (X 6.) 



Hamilton group. West iVilliatas, Onlario, Canada. 

 Fig. 12 An enlargement of a natural vertical section, showing the form of the cell lubes, and the vesicles 



disposed as tubuli. (X 6.) 

 Fig. 13. An enlargement of a vertical section, showing the septate cell tubes, and the vesicles disposed as 



tubuli, with septa more distant than in Hg. 11. (X 6-) 

 Fig. 14. An enlargement of a vertical section. (X 6.) 



Hamilton group. York, Livingston county, N. Y. 



LlCHEJ^ALIA STELLATA. 

 Page 195. 

 Fig 15. An enlargement of one of the monticules, showing the form and disposition of the cell apertures. 

 (X6.) 



Hamilton group. West Bloomfield, Ontario county, jV. Y. 

 Fig. 16. An enlargement of a vertical section, showing the cell tubes, and the intercellular vesicles dis- 

 posed as tubuli. (X 6.) 



Hamilton gi-oup. West Williams, Ontario, Canada. 



