344 AMERICAN FOSSIL BRYOZOA. [bull. 173. 



Paleschara ? variacella Hall — Continued. 



1891. Paleschara variacella. Hall, Rep. State Geologist New York for the year 

 1890, p. 39; Forty-fourth Ann. Rep. New York State Museum, p. 69. 

 Hamilton: York, New York. 



PATELLIPORA Rominger. Genotype: Patellipora stellata Rominger. 

 1887. Patellipora. Rominger, Proo. Acad. Nat. Sci. Philadelphia, p. 11. 



Obs. This genus can not be considered fully established, as no details 

 have been made known concerning the internal structure of the type 

 and only known species. 



Patellipora stellata Rominger. 



1887. Patellipora stellata. Rominger, Proc. Acad. Nat. Sci. Philadelphia, p. 11. 

 Obs. This species is founded upon three specimens discovered ' ' in drift 

 bowlders at Ann Arbor, associated with characteristic Corniferous lime- 

 stone fossils in silicified conditions. ' ' 



Penniretepora D'Orbigny. 



1850. Penniretepora. D'Orbigny, Prodr. de Pal., I, p. 45. 



1895. Penniretepora. Whidborne, Devon. Fauna England, (Pal. Soc. Publ. ), 



II, pt. 4, p. 185. 

 Obs. This genus was never properly established. 



PERONOPORA Nicholson. Genotype: Monticulipora f rondosa Nichol- 

 son (not D'Orbigny) = Chsetetes decipiens Rominger. 



1881. Peronopora. Nicholson, Genus Monticulipora, pp. 102, 215. 



1882. Peronopora. TJlrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 153. 

 1886. Peronopora. Waagen and Wentzel, Pal. Indica, Ser. XIII, p. 875. 

 1890. Peronopora. Ulrich, Geol. Sur. Illinois, VIII, p. 370. 



1896. Peronopora (in part). Zittel's Textb. Pal. (Engl, ed.), p. 104. 

 1896. Peronopora. Ulrich, Zittel's Textb. Pal. (Engl, ed.), p. 272. 



Peronopora compressa (Ulrich). 



1879. Cheetetes compressus. Ulrich, Jour. Cincinnati Soc. Nat. Hist., II, p. 27, 



pi. vii, 25-256. 

 1882. Peronopora compressa. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 244. 



1894. Monticulipora compressa. J. F. James, Jour. Cincinnati Soc. Nat. Hist., 



XVIII, p. 75. 

 1882. Peronopora imiformis. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 244, 

 pi. X, 8, 8a. 



1895. Monticulipora uniformis. J. F. James, Jour. Cincinnati Soc. Nat. Hist., 



XVIII, p. 76. 

 Cincinnati (Lorraine) : Cincinnati, Ohio, and vicinity. 

 Obs. Peronopora imiformis Ulrich is not a valid species, having been 



founded upon a phase of Peronopora compressa Ulrich in which the 



mesopores are reduced to a minimum. Other species of Peronopora 



exhibit this same characteristic. 



Peronopora decipiens (Rominger). 



1866. Chsetetes decipiens. Rominger, Proc. Acad. Nat. Sci. Philadelphia, p. 116. 

 1882. Peronopora decipiens. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 244. 



1874. Chaetetes frond osus (not of D'Orbigny). Nicholson, Quar. Jour. Geol. 



Soc. London, XXX, p. 508, pi. xxx, 2-26. 



1875. Chfetetes frondosus (not of D'Orbigny). Nicholson, Pal. Ohio, II, p. 208, 



pi. xxii, 1-16. 



1876. Chtetetes frondosus (not of D'Orbigny). Nicholson, Ann. Mag. Nat. Hist. , 



ser. 4, XVIII, p. 91, pi. v, 11, 11a. 



