

PLATE XLI. 



PAGE 



Fig. 1. CEBAMOPOBELLA STELLATA Ulr 465 



1. Natural size, view of type specimen, showing the stellate macula;. 



1 a. Surface of same, x9. 



Cincinnati group. Sterling, 111. 

 Illinois State Museum. 



Fig. 2. CEBAMOPOBELLA GBANULOSA Ulr 466 



2. Vertical section, x 18, showing two layers of cells. 



2 a. Tangential section, x!8, showing the numerous acanthopore like gran- 



ules and other peculiarities of the species. 

 Cincinnati group, Wilmington, IlL 

 Illinois State Museum. 



Fig. 3. ANOLOTICHA PONDEBOSA Ulr 473 



3. An example of this species, natural size. 



3 a. Surface of same, x9. 



3 b. Tangential section showing the interrupted appearance of the lunaria, 

 and distribution of zooscia and mesopores, x!8. 



3 c. Small portion of a vertical section, x!8, showing the principal charac- 

 ters of the species and genus. 



3 d. The central part of a transverse section, x!8. 



Cincinnati group, Wilmington, 111. 

 Illinois State Museum. 



Fig. 4. DIAMESOPOKA VAUPELI Ulr. (See also PI. XXXIX.) 468 



4. 4a and 46. Three examples of this species, natural size. 



4 c. Surface of 4, x9. 



Cincinnati, Ohio. 



E. O. Ulrich's collection. 



Fig. 5. DIAMESOPOBA COMMUNIB Ulr. (See also PI. XXXIX.) 



5 and 5 a. Two fragments of the ordinary size and appearance. 



5 6. Surface x9, showing one of the maculae, and the thick peristomos. 



Cincinnati, Ohio. 



E. 0. Ulrich's collection. 



