PLATE LXin— Continued. 



Stictopora DIVBROENS. 



POKeSST. 

 Fig. 18. Fragments, natural size. 



Fig. 19. An enlargement, ehowing the form and aiTangement 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 apertui-es. (X 6.) 



Hamilton gi-oup. S/urre of Seiieca lake, N. T. 



Stictopora striata. 



Page 246. 

 Fig. 32. An enlargement, showing the form and arrangement of the cell apei-tui>e8, the sti-ong pei-istomes, 

 and numerous short striations. 



Hamilton group. Genesee valley, N. Y. 



Stictopora rectalinea. 



Page 24S. 

 Fig, 23. An enlargement, showing the form of the cell apertui-es, and their disposition in lonpituilitiMJ, 

 , .. parallel rows, 6eparate<l by stnated ridges. (X tJ.) 



Hamilton group. West Williaias, Ontario, Canada. 



,1 Stictopora ovata. 



Page«8. 

 Pig. 34. An enlargement, showing the form and arrangement of the cell apertui-es, the strong peristomes, 

 and the thin, angular, longitudinal .striations. (X t>.) 



Hamilton group. FaUrbrook, four miles eaut of Caiiaiuiaigiia lake, N. Y. 



