PLATE XXXII. 



Upper tier, the two specimens above, Sykingopora takulata, from the Falls of 

 the Ohio. 

 Three lower specimens, Syringopora hisingeri. Corniferous limestone 

 drift. 

 Lower tier, left-hand specimens, Syringopora annulata. Niagara group drift. 

 Central and right-hand specimens, Syringopora nobills ; the first from 

 Hamilton group of Thunder Bay, the other from the corniferous lime- 

 stone drift. 



