PLATE XXXV. 



PAGE. 



Fig. 1. BATOSTOMELLA SIMULATRIX Ulr 432 



1, 1 a and 1 6. Three fragments from Ohio localities. Natural size. 



1 c. A slightly more slender example from Sterling, III. 



1 d. Surface of 1 a, x!2, shows its usual appearance. 



1 e. A small portion of same, x23. showing the perfect condition of the 



zoo3cia and mesopore apertures. Also one of the opercular covers. 

 1 /. Tangential section x!8. 

 1 g. Vertical section x!8. 



Cincinnati group. 



Illinois State Museum and E. O. Ulrich's collection. 



Fig. 2. BATOSTOMELLA OEACILIS Nicholson 434 



Tangential section of the best preserved example seen, xi5. 

 Cincinnati, Ohio. 



Fig. 3. BATOSTOMA IMPERFECTU M Ulr 460 



3. An example of medium size. Natural size. 

 3 a. Surface of same, x!2. 



3 It. Tangential section, x!8, showing the incomplete diaphragms. 

 3 c. A small portion of game, x35, to show the structure of^the walls more 

 clearly. 



3 d. Outer portion of a vertical section, x!8. 



Cincinnati group. 



Illinois State Museum and E. O. Ulrich's collection. 



Figs. 4 and 5. BATOSTOMA VABIABILE Ulr. (See also PI. XXXVI) 460 



4 and 4 a. Two fragments from Savannah, 111. 

 4 6. A ramose example from Ohio. 



4 c and 4 d. Two tangential sections. x!8. The former represents the ap- 

 pearance just below the surface, the latter just after the tubes bend 

 outward. 



4 e. About half of a vertical section, x!8. 

 5. A ramose example from Osgood, Ind. 



5 a. This figure is incoireot. 



Cincinnati group. 



Illinois State Museum and E. 0. Ulrich's collection. 



