

l.'I .-) ' 



.H 



PLATE XLIV. 



PAGE 



Fig. 1. FENESTEI/LA VESA Ulr. (See also PI. LIV.) 536 



1. Obverse x9. 



1 a. Reverse x9. The portion -elected has the branches a little closer than 



usual. 



Hamilton group, Buffalo, Iowa. 



E. O. Ulrich's collection. 



Fig. 2. FENESTRAPORA OCCIDENTALS Ulr. (See also PI. LIV.) 558 



2. An example showing the obverse side. Natural size. 



2 a. Surface of same x9, showing the earinse and large pores only, the 



branches being covered by the matrix. 

 Hamilton group, Buffalo, Iowa. 

 Prof. A. H. Worthen's collection. 



Fig. 3. SEMICOSCINIUM PLANODOBSATUM Ulr 555 



3. The obverse side of a finely preserved example. Natural size. 



3 a. The upper or reverse face of same, x!*. 



3 b. Obverse, x9. The carina is wanting on portions of several branches. 



Upper Helderberg, Ohio Falls. 

 E. O. Ulrich's collection. 



Fig. 4. SEMICOSCINIUM KHOMBICOM Ulr. (See also PI. LIV.) 556 



4. Portion of the obverse surface x9, showing the flexuous branches, thin 



keel, and large cells on the dissepiments. 



4 a. Portion of the reverse x9. 



Hamilton group, Buffalo, Iowa. 

 E. O. Elrich's collection. 



Fig. 5. PHYLLOPOBA ASPEEA Ulr B13 



5. An example showing only (he basal portion of the zoarium. Natural 



size. 



5 a. The outer or obverse surface of same x9, showing comparative size of 



the inosculating branches and fenestrules, and the irregular elevated 

 points. 

 5 b. The reverse of same x9. 



Upper Helderberg, Ohio Falls. 

 E. 0. Ulrich's collection. 



