PLATE III. 

 CYCLOPORINA. 



(Page 504.) 

 Ctcloporina hemictcla, Hall (sp.). 



Fig. 1. Noncelluliferous face. x6. 

 Fig. 2. Celluliferous face. x6. 

 Fig. 5. Side view of a branch. x6. 

 Hamilton group. New York. 



CTCLOPOEmA SEMIROTUNDA, Hall (sp.). 



Fig. 3. Noncelluliferous face. x6. 

 Fig. 4. Celluliferous face. x6. 



- Hamilton group. I^ew York. 



FENESTRAPORA. 



(Page 506.) 

 Fbnesteapoea largioe, Hall (sp.). 



Fig. 6. Noncelluliferous face. xl8. 



Hamilton group. Moscow, N". Y. 



FeNESTRAPOEA BIPEEFOEATA/Hall. 



Fig. 7. An enlargement from the celluliferous face, showing the 



triangular pores. xl8. 

 Fig. 8. An enlargement from the noncelluliferous face. xlS. 

 Fig. 9. An enlargement from the celluliferous face, showing the cell 



apertures and the poriferous summits of the carinse. x6. 

 Fig. 10. A still further enlargement of the poriferous summits of the 



carinse. xl8. 

 Fig. 11. Side view of a branch. x6. 

 Fig. 12. End view of branches. x6. 



Hamilton group. Moscow, JV. Y, 



624 



