PLATE 46. 



C(ENiTES VEETiciLLATA. Niagara. 



1. Lateral view of the cylindrical portion of a corallum. 



3. Lateral view (prostrate) of the cylindrical portion of a corallum, with 

 a verticillate expansion. 



2. 4. Under surfaces of expanded verticillate plates. 



These examples are from the ferruginous clay of the Upper Niagara, 

 near Louisville. Collection of the author. 



Alveolites louisvillensis, Nov. Spec. Niagara. 



5. Upper surface of a corallum from the white clay of the Upper 



Niagara, near Louisville. Collection of Mr. Nettelroth. 



6. Upper surface of a weathered corallum, from the same horizon and 



locality. Collection of the author. 



Alveolites niagarensis. Niagara. 



1. Upper surface of a fragment from the Upper Niagara white clay, 

 near Louisville. Collection of Mr. McConathy. 



Alveolites fibrosus, Nov. Spec. Niagara. 



8. Ui3per surface of a corallum fi'om the Upper Niagara clay, near 



Louisville. Collection of the author. 



MiLLERiA (Nov. Gen.) laminata, Nov. Spec. Niagara. 



9. Oblique view of the upper surface and side of a corallum, showing 



the successive thin laminar expansions; from the Upper Niagara 

 ferruginous clay, near Louisville. Collection of the author. 



