346 AMERICAN FOSSIL BRYOZOA. [bull. 173. 



Petigopora gregaria Ulrich. 



1883. Petigopora gregaria. Ulrich, Jour. Cincinnati Soc. Nat. Hist., VI, p. 155, 

 pi. vii, 3-3c. 



1896. Petigopora gregaria. J. F. James, Jour. Cincinnati Soc. Nat. Hist., XVIII, 



p. 124. 



1897. Petigopora gregaria. Simpson, Fourteenth Ann. Rep. State Geologist New 



York for the year 1894, fig. 129 (in part) (p. 564). 

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



Petigopora petechialis (Nicholson). 



1875. Chsetetes petechialis. Nicholson, Pal. Ohio, II, p. 213, pi. xxii, 5, 5a. 

 1883. Petigopora petechialis. Ulrich, Jour. Cincinnati Soc. Nat. Hist., VI, 

 p. 156. 



1886. Petigopora petechialis. Ulrich, Fourteenth Ann. Rep. Geol. Nat. Hist. 



Sur. Minnesota, p. 103. 



1888. Monticulipora petechialis. James and James, Jour. Cincinnati Soc. Nat. 



Hist., XI, p. 24. 



1889. Petigopora petechialis. Miller, North American Geol. Pal., fig. 496 



(p. 314). 

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

 XVIII, p. 85. 

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



Petigopora scabiosa Ulrich. 



1889. Petigopora scabiosa. Ulrich, Contr. Micro-Pal. Cambro Sil., Part 11, p. 34. 

 1897. Petigopora scabiosa. Whiteaves, Pal. Foss., Ill, p. 116. 



Cincinnati (Richmond): Stony Mountain, Manitoba. 



PHACELOPORA Ulrich. Genotype: Phacelopora pertenuis Ulrich. 



1890. Phacelopora. Ulrich, Geol. Sur. Illinois, VIII, p. 368. 



1889. Phacelopora. (Ulrich, in press). Miller, North American Geol. Pal., p. 314. 

 1897. Phacelopora. Simpson, Fourteenth Ann. Rep. State Geologist New York 



for the year 1894, p. 600. 



Phacelopora constricta Ulrich. 



1890. Phacelopora constricta. Ulrich, Geol. Sur. Illinois, VIII, p. 406, pi. 



xxix, 2. 

 1897. Phacelopora constricta. Simpson, Fourteenth Ann. Rep. State Geologist 

 New York for the year 1894, fig. 209 (p. 600). 



Trenton: Burgin, Kentucky. 



Obs. Mr. Ulrich now regards this as the interior cast of some undeter- 

 mined species of Helopora or Arthroclema. 



Phacelopora pertenuis Ulrich. 



1890. Phacelopora pertenuis. Ulrich, Geol. Sur. Illinois, VIII, p. 406, pi. xxix, 



1-1 c. 

 1894. Phacelopora pertenuis. Keyes, Missouri Geol. Sur., V, p. 13, pi. xxxiii, 3. 

 1897. Phacelopora pertenuis. Simpson, Fourteenth Ann. Rep. State Geologist 

 ■New York for the year 1894, figs. 207, 208 (p. 600). 

 Trenton: Thebes, Illinois. 



PH-SINOPORA Hall. Genotype: Phaenopora explanata Hall. 



1852. Phfenopora. Hall, Pal. New York, II, p. 46. 



1882. Phsenopora. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 152. 



1887. Phtenopora. Foerste, Bull. Sci. Lab. Denison Univ., II, p. 157. 



1889. Phsenopora. Miller, North American Geol. Pal., p. 314. 



1890. Phaenopora. Ulrich, Geol. Sur. Illinois, VIII, p. 392. 



