PLATE XXXII. 



PAGE. 



Fig. 1. PACHYDICTYA SPLENDENS Ulr 523 



1. An example of the ordidary size and shape, natural size. 

 1 a. Surface of same x!2. 



1 b. Tangential section cutting the zoarium just beneath the surface x!8. 



Cincinnati group, Wilmington, 111. 

 Illinois State Museum. 



Fig. 2. HOMOTEYPA GELASINOSA Ulr 41(1 



2. View of type specimen showing arrangement of the dimple like macula:'. 



2 a. Surface of same x!2. 



2 6. Tangential section x!8. 



2 c and 2 d. Vertical section natural size and a portion x!8. 



Cincinnati group, Wilmington, 111. 

 Illinois State Museum. 



Fig. 3. HOMOTBTPA PI/ABELLABIS Ulr 411 



3. A nearly complete example, natural size. 

 3d.. Surface of same x!2. 



3 6. Tangential section x!8. 



3 c. Vertical section showing the thin wavy walls and large cystiphragms 



x!8. 



Cin?inrati group, Wilmington, 111. 



Illinois. State Museum. 



Fig. "\. MONTICt'LIPOKA LAMEM/OSA Ulr .'.... 408 



4. Portion of the surface of a mass several inches in diameter x!2. 



4 a. Tangential section of the usual appearance xli?. 



4 6. Part of a vertical section, showing one layer complete and portions of 



twe others x!8. The walls have the peculiar structure common to the 



genus. 



Cincinnati group, Wilmington, 111. 



Fig. 5. HOMOTKTPEI.LA CONTEXTA Ulr 412 



5. The type specimen of the natural size. 



5 a. Tagential section of same, showing the rounded zooecia with their small 



acanthopores and cystiphragms, and the anugular mesopores x!8. 

 5 b. Vertical section of same xI8. The zooecial tubes have a series of cysti- 

 phragms, while the mesopoies only have straight diaphragms. 

 Cincinnati group, Wilmington, 111. 

 Illinois State Museum. 



