Plate 8. 



Pachydictya fldbellum (Leuchtenberg). 



Fig. 1. A nearly complete zoarium, Xl-5. 



Wesenberg limestone (E), Wesenberg, Esthonia. 



Graptodictya proava (Eichwald). 



2. Surface of portion of a branch, X18, Bbowiag striated noncelluliferoua border 



and several adjoining rows of zooecia. 

 Wassalem beds (D3), Uxnorm, Esthonia. 



Graptodictya bonnemai, new species. 



3. Magnified view, X18, of branch. 



Kuckers shale (C2), Baron Toll's estate, Esthonia. * 



Graptodictya ohliqua, new species. 



4. Surface of the type-specimen, X8. 



Lower part of Lyckholm limestone (Fl), Kerkiill, Esthonia. 



Pseudohornera bifida (Eichwald.) 



5. Celluliferousside of portion of a zoarium, X6. 



Kuckers shale (C2), Baron Toll's estate, Esthonia. 



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