Plate 3. 



[After Dybowski.] 



Trematopora cingulata, new species. 



Fig. 1. Fragment of zoarium, natural size. 

 16. Tangential section. 



Zone 1 [C], Kuckers, Sack. 



Trematopora cingulata var. nodosa, new variety. 



la. Fragment, X2/3. 



Zone 2 [D], Wait. 



Trematopora variabilis, new species. 



2. Portion of zoarium, about natural size. 

 2a. Tangential section. 



Zone 2 [D], Wassalem. 



Trematopora variabilis var. complanata, new variety. 



3. Fragment of a zoarium, X2/3. 

 3a. Tangential section. 



Zone 2 [D], Wassalem. 



Trematopora colliculata Eichwald. 



4. Transverse section. 

 4a. Tangential section. 

 46. Vertical section. 



4c. Tangential section showing arrangement of zooecia. acanthopores, and 

 mesopores. 

 Zone 2 [D], Worms, etc. 



Dittopora anulata Eichwald, sp. 



5. Tangential section. 



Zone 1 [B], Popowa. 



Trematopora pustulifera, new species. 



6. Tangential section. 



Zone 2 [D], Wassalem. 



Dittopora clavseformis, new species. 



7. Three zoaria, X2/3. 

 7a. Vertical section. 

 76. Tangential section. 



Zone 1 [B], Pulkowa. 



Orbipora arborescens, new species. 



8. Zoarium, X2/3. 



8a. Tangential section. 

 86. Transverse section of branch. 

 Zone 8 [Silurian], Lode. 

 354 



