PLATE LXIII—Continued. 
Stictopora DIVERGENS. 
Page 257. 
Fig-. 18. Fragments, natural size. 
Fig. 19. An enlargement, showing the form and arrangement of the cell apertures, and the granulose 
striations. (X 6.) 
Hamilton group. Darien Centre, N. Y. 
Stictopora recubans. 
Page 260. 
Fig. 20. A fragment, natural size. 
Fig. 21. An enlargement, showing the form and arrangement of the cell apertures. (X 6.) 
Hamilton group. Shore of Seneca lake, N. Y. 
Stictopora striata. 
Page 246. 
Fig. 22. An enlargement, showing the form and arrangement of the cell apertures, the strong peristomes, 
and numerous short striations. 
Hamilton group. Genesee valley, N. Y. 
Stictopora rectalinea. 
Page 245. 
Fig. 23. An enlargement, showing the form of the cell apertures, and their disposition in longitudinal, 
parallel rows, separated by striated ridges. (X 6.) 
Hamilton group. West Williams, Ontario, Canada. 
Stictopora ovata. 
Page 248. 
Fig. 24. An enlargement, showing the form and arrangement of the cell apertures, the strong peristomes, 
and the thin, angular, longitudinal striations. (X 9.) 
Hamilton group. Fall-brook, four miles east of Canandaigua lake, N. Y. 
