POLYZOANS. 17 



Meekopdra clausa (ULRICH). 



Fistulipora <? clausa Ulrich, 1884: Jour. Cincinnati Soc. Nat. Hist., vol. 



VII, p. 47, pi. iii, figs. 4-4b. 

 Meekopora clausa Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 485, pi. 



Ixxvii, figs. 7-7b. 



Horizon and localities. Lower Carboniferous, Kaskaskia 

 limestone : Chester ( Illinois ). 



Strotopora foveolata ULRICH. 



Strotopora foveolata Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 487, 

 pl.lxxvi, figs. 9-9a. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: St. Francisville; Bentonsport (Iowa); Warsaw 

 ( Illinois ). 



Strotopora dermata ULRICH. 



Strotopora dermata Ulrich, 1890 : Geol. Sur. Illinois, vol. VIII, p. 488, pi. 

 Ixxvii, figs. S-8a. 



Horizon and localities Lower Carboniferous, Keokuk 

 limestone: Keokuk (Iowa). 



Cystodictya nitida ULRICH. 



Cystodictya nitida Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 493, pi. 

 Ixxvi, figs. 4-4c. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: St. Franseieville ( probably ); Bentonsport (Iowa). 



Cystodictya americana ULRICH. 



Cystodictya americana Ulrich, 1890: Geol. Sur. Illinois, vol. VIII, p. 494, 

 pi. Ixxvi, figs. 5-oa. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone: Bentonsport (Iowa), and elsewhere on the lower 

 Des Moines river. 



Cystodictya pustulosa ULRICH. 



Cystodictya pustulosa Ulricb, 1890: Geol. Sur. Illinois, vol. VIII, p. 495, 

 pi. Ixxvi, figs. 2-2a. 



Horizon and localities. Lower Carboniferous, Keokuk 

 limestone : Keokuk ( Iowa ). 



