PLATE LVIII 
Fistulipora confertipora. 
Page 211. 
1. An enlargement, showing the form and disposition of the cell apertures and interapertural pits; 
also one of the monticules, the centers of which a,re destitute of apertures. (X 6.) 
Hamilton group. Two miles east of Alden, N. Y. 
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. Y. 
3. An enlargement from another specimen, showing the cell apertures slightly oval, an unusual 
occurrence. (X 6.) 
Hamilton group. Tivo miles south of Darien Centre, N. F. 
4. An enlargement of a natural vertical section, showing the corrugated walls of the cell tubes. (X 6.) 
5. An enlargement of a translucent vertical section, showing the septate cell tubes, and the form 
and disposition of the intercellular vesicles. (X 6.) 
Hamilton group. Two miles east of Alden, N. Y. 
Fistulipora serrulata. 
Page 214. 
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.) 
7. A still farther enlargement, showing more distinctly the form of the cell apertures and inter¬ 
apertural pits, and the opercula of the apertures. (X 18.) 
Hamilton group. York, Livingston county, N. Y. 
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. 
Page 210. 
9. An enlargement of a transverse section. (X 18.) 
Hamilton group. Western New York. 
10. An enlargement of one of the monticules, showing the form and disposition of the cell apertures 
and interapertural pits. (X 6.) 
11. An enlargement of a vertical section, showing the septate cell tubes, and the intercellular vesicles 
forming tubuli with very closely disposed septa. (X 6.) 
Hamilton group. West Williams, Ontario, Canada. 
12 An enlargement of a natural vertical section, showing the form of the cell tubes, and the vesicles 
disposed as tubuli. (X 6.) 
13. An enlargement of a vertical section, showing the septate cell tubes, and the vesicles disposed as 
tubuli, with septa more distant than in fig. 11. (X 6-) 
14. An enlargement of a vertical section. (X 6.) 
Hamilton group. York, Livingston county, N. Y. 
Lichenalia stellata. 
Page 195. 
15. An enlargement of one of the monticules, showing the form and disposition of the cell apertures. 
(X 6.) 
Hamilton group. West Bloomfield, Ontario county, N. F. 
16. An enlargement of a vertical section, showing the cell tubes, and the intercellular vesicles dis¬ 
posed as tubuli. (X 6.) 
Hamilton group. West Williams, Ontario, Canada. 
