PLATE II. 



Fig. 1. — Fenestella ovatipora Rogers. 



1. Obverse, X 27. 



Fig. 2. — Fenestella missouriensis Rogers. 



2. Obverse, X 27. 



Fig. 3. — Polypora aspera Rogers. 



3. Portion of zoarium, X6. 



3a. Obverse face of portion of branch, X27. 

 Fig. 4. — Polypora flexuosa Rogers. 



4. Obverse, X 27. 



Fig. 5. — Thamniscus tenuiramus Rogers. 



5. Specimen, natural size. 

 5a. Obverse face, X27. 



Fig. 6. — Pinnatopora pyriformopora Rogers. 



6. Specimen, natural size. 

 6a. Obverse face, X27. 



