Phite LXVIII Continued. 



PAGE. 



Fig. 4. CYCLOPOBA EXPATIATA Ulr C73 



4. Tangential section, x28, showing the acanthopores and an irregular ar- 

 rangement of the zooacia and mesopores. 



4 a. Several zooecia of a tangential section, x50, arranged as in C. fungia. 

 4 b. Tangential section. x28, embracing one of the maculae. 

 4 c. Portion of flg. 4, x50. 



4 ii, A zoecium with inflected walls, xSO. 



Warsaw beds, Warsaw, 111. 



E. O. TJlrieh's collection. 



.TIT' /. .1 .'II /.i I I 



Fig. 5. STICTOPOREI/LA? BASALIS Ulr. (See also PI. LXIX and LXXV) 532 



5 and 5 a. Two portions of a tancential section, x50, showing structure of 



zoarium just beneath the surface. 

 Keokuk group, Warsaw, 111. 

 Illinois State Museum. 



.MI 



,3H'i- : i: iti:fl 



'"-.Ofii'i? ill) J/ni; ftrvnox Vi 





