94 



AMERICAN FOSSIL BRYOZOA. 



[bull. 173. 



L/.s/.s of Impedes — Continued. 

 DEVONIAN— Continued. 



Oriskany, 



Fenestella peculiaris Hall 



perplexa Hall 



planiramosa Hall 



pro(;eritas Hall and Simpson 



proutana Miller 



pulchella Ulrich 



quadrangula Hall 



serrata Hall 



singularitas Hall 



sinuosa Hall 



spissa Hall 



stellata Hall 



tenella Hall 



tuberculata Hall and Simpson 



variapora Hall 



vera Ulrich 



verrucosa Hall 



Fenestrapora biperforata Hall 



infraporosa (Ulrich) 



occidentalis Ulrich 



Fistulipora acervulosa Rominger 



alternata ( Hall) 



astrica Ulrich 



? bullata (Hall and Simpson) . .. 



colliculata (Hall) 



? confusa (Hall and Simpson) . . . 



? constricta (Hall) 



conulata ( Hall ) 



cornuta ( Hall and Simpson ) 



( ?Dichotrypa) corrugata Ulrich 



cultellata (Hall) 



distensa (Hall) 



eriensis Rominger 



foliacea (Hall) 



foordi Ulrich 



geometrica ( Hall) 



granifera ( Hall ) 



?? helios Rominger 



? hemis^jherica (Hall) 



Upper 

 Held. 



X 



X 



X 



X 



X 



Hamilton. 



