Plate XLVII Continued. 



PAGE. 



Pig. 7. FISTULIPOBA FOOBDI, U!r. (See also PI. XLVIII) 479 



7. A specimen showing distribution of maculje and zooecia. 



7 a. Surface of same, x9, showing the opercular covers closing many of the 



triangular zocecia apertures. 

 Hamilton group, Roekford, Iowa. 

 E. O. Ulrich's collection. 



Fig. 8. FlSTULIPOKA COKRUGATA Ulr 480 



8. Portion of a large expansion showing the strongly wrinkled unde . sur- 



face, and at the bottom a small fragment showing the eelluliferous 

 aspect. 



8 (i. Celluliferous surface, x!2. showing one of the maculue and the arrange- 



ment, of the zooeeia aperture. 

 Hamilton group, Thunder Bay, Mich. 

 Prof. A. H. Worlhei.'s collection. 



