NicKLES AND BASSLEK.] CATALOGUE OF GENERA AND SPECIES. 261 



Fenestella rigida Hall. Soe Polypora rigida (Hall). 

 Foncstolla (Polypora) rio-ida Hall. See Poh'pora rioida (Hall). 

 Fenestella ro])usta Hall. See Polypora robu.sta (Hall). 

 Fenestella (Polypora) robusta Hall. Sec Polypora robusta (Hall). 



Fenestella rudis Ulrich. 



1890. Fenestella riulis. Ulrich, Geol. Surv. Illinois, VIII, p. 537, pi. xlix, ;j-3(/. 

 1894. Fenestella rudis. Keyes, Missouri Geol. Surv., V, p. 23, pi. xxxiv, 5. 



Keokuk: Keokuk and Bentonsport, Iowa. 



Warsaw: Warsaw and Nauvoo, Illinois. 



Fenestella (Polypora) rustica Hall and Simpson. See Polypora rustiea 



(Hall and Simpson). 

 Fenestella scalaris Hall. See Unitrypa scalaris (Hall). 

 Fenestella (Unitrypa) scalaris Hall, See Unitrypa scalaris (Hall). 

 Fenestella sculptilis Ulrich. See Fenestella stellata Hall. 

 Fenestella semirotiinda Hall. See Semicoscinium semirotundum (Hall). 

 Fenestella (Polypora) separata Hall. See Polypora separata (Hall). 



Fenestella serrata Hall. 



1883. Fenestella serrata. Hall, Trans. Albany Institute, X, p. 170 (abstract, 1881, 



p. 28). 

 1887. Fenestella serrata. Hall and Simpson, Pal. New York, VI, p. 110, i>\. xlvii, 

 11-19. 

 Hamilton: Falls of the Ohio. 



Fenestella serratula Ulrich. 



1890. Fenestella serratula. Ulrich, Geol. Surv. Illinois, VIII, p. 544, pi. 1, 5-5c. 

 1894. Fenestella serratula. Keyes, Missouri Geol. Surv., V, p. 23. 



Keokuk: Nauvoo, Illinois. 



Warsaw: Warsaw and Monroe County, Illinois. 



St. Louis: Caldwell, Lyon, and Crittenden counties, Kentucky. 



Chester: Sloans Valley, Kentucky. 



Fenestella sevillensis Ulrich. 



1890. Fenestella sevillensis. Ulrich, Geol. Surv. Illinois, VIII, p. 552, pi. lii, 6, 6a. 

 Base of Coal IVIeasures: Seville, Illinois. 



Fenestella shumardi Prout. 



1858. Fenestella Shumardii. Prout, Trans. St. Louis Acad. Sci., I, p. 232. 

 Carboniferous: Organ Mountains, New Mexico. 



Fenestella Shumardii Meek and other authors (not Prout). See Fe- 

 nestella perelegans Meek. 

 Fenestella singularis Hall. See Fenestella singularitas Hall. 



Fenestella singularitas Hall. 



1883. Fenestella singularis. Hall, Trans. All)any Institute, X, p. 171 (Fenestella 



singularitas, abstract, 1881, p. 29). 

 1887. Fenestella singularitas. Hall and Simpson, Pal. New York, VI, j). 1 14, pi. 



xlvi, 12-16. 

 Hamilton: Falls of the Ohio. 



Fenestella (Ptiloporina) sinistralis Hall and Simpson. See Ptiloporina 

 sinistralis (Hall and Simpson). 



