382 AMERICAN FOSSIL BRYOZOA. [bull. 173. 



Ptilodictya whiteavesi Ulrich. 



1889. Ptilodictya Whiteavesii. Ulrich, Contr. Micro-Pal. Cambro-Sil., Part II, 



p. 44, pi. viii, I-lf. 

 1895. Ptilodictya Whiteavesii. Whiteaves, Pal. Foss., Ill, p. 118. 

 Cincinnati (Richmond): Stony Mountain, Manitoba. 



Ptilodictya whitfieldi Foerste. 



1895. Ptilodictya Whitfieldi. Foerste, Geol. Sur. Ohio, VII, p. 598, pi. xxxvi, 

 4, pi. xxviii, 5. 

 Clinton: Todds Fork, Ohio. 



PTILOPORA McCoy. Genotype: Ptilopora pluma McCoy. 



1845. Ptilopora. McCoy, Synop. Carbon. Foss. Ireland, p. 200. 



Hall, Pal. Iowa, p. 652. 



Eichwald, Lethfea Rossica, I, p. 381. 



Hall, Trans. Albany Institute, X, p. 196 (abstract, 1881, p. 196). 



Claypole, Quar. Jour. Geol. Soc. London, XXXIX, p. 31. 



Hall, Rep. State Geologist, New York, for the year 1884, p. 36. 



Waagen and Pichl, Pal. Indica, Ser. XIII, p. 774. 



Ulrich, Contr. American Pal., I, p. 4. 



Hall and Simpson, Pal. New York, VI, p. xxiv. 



Miller, North American Geol. Pal., p. 318. 



Ulrich, Geol. Sur. Illinois, VIII, pp. 398, 621. 



Whidborne, Devon. Fauna England, (Pal. Soc. Publ.), II, 



184. 



Ulrich, Zittel's Textb. Pal. (Engl, ed.) p. 283. 



Simpson, Fourteenth Ann. Rep. State Geologist New York for 

 the year 1894, pp. 519, 521. 

 1876-77. Dendricopora. De Koninck, Rech. sur les Foss. Pal. de la Nouv. 

 Galles du Sud, III, p. 169; 1898, Engl, translation, Mem. Geol. Sur. 

 New South Wales, Pal. No. 6, p. 129. 

 1885. Dendricopora. Waagen and Pichl, Pal. Indica, Ser. XIII, p. 774. 



Ptilopora acuta Ulrich. 



1890. Ptilopora acuta. Ulrich, Geol. Sur. Illinois, VIII, p. 622, pi. Ixv, 4, 4a. 

 1894. Ptilopora acuta. Keyes, Missouri Geol. Sur., V, p. 31. 



Keokuk: Keokuk and Bentonsport, Iowa. 

 Burlington: Burlington, Iowa. 



Ptilopora cylindracea Ulrich. 



1890. Ptilopora cylindracea. Ulrich, Geol. Sur. Illinois, VIII, p. 623, pi. Ixvi, 



2-26. 

 1894. Ptilopora cylindracea. Keyes, Missouri Geol. Sur., V, p. 32. 

 Keokuk: Kings Mountain, Kentucky; Bentonsport, Iowa. 



Ptilopora infrequens Hall and Simpson, 



1887. Ptilopora infrequens. Hall and Simpson, Pal. New York, VI, p. 284, pi. 



Ixvi, 26-29. 

 1897. Ptilopora infrequens. Simpson, Fourteenth Ann. Rep. State Geologist 

 New York for the year 1894, pi. viii, 4, 6, 7. 

 Hamilton: Western New York. 



Ptilopora nodosa Hall. 



1883. Ptilopora nodosa. Hall, Trans. Albany Institute, X, p. 196 (abstract, 



1881, p. 196). 



1884. Ptilopora nodosa. Hall, Rep. State Geologist New York for the year 



1883, p. 59. 



