P LAT E XXXI. 



Figs. I and 2 Syrincopoka Maclurei. Corniferous limestone drift. Basal 

 expansion of Syringopora perelegans on the left lower corner of 

 Fig. 2. 

 3 and 4. Syringopora perelegans. Corniferous limestone, Falls of the 

 Ohio. 



