364 AMERICAN FOSSIL BRYOZOA. [bull. 173. 



Polypora idothea (Hall) — Continued. 



1883. Fenestella Idothea. Hall, Rep. State Geologist New York for the year 

 1882, pi. xix, 14, 15. 



1887. Fenestella (Polypora) Idothea. Hall and Simpson, Pal. New York, VI, 



p. 60, pi. xix, 14, 15. 

 Lower Helderberg: Clarksville, New York. 



Polypora imbricata Prout. Not recognizable. 



1866. Polypora imbricata. Prout, Trans. St. Louis Acad. Sci., II, p. 412. 

 "Mountain Limestone:" Indiana. 



Polypora impressa Ulrich. 



1888, Polypora impressa. Ulrich, Bull. Denison Univ., IV, p. 72, pi. xiii, 8, 8o. 

 Waverly: Richfield, Ohio. 



Polypora incepta Hall. 



1852. Polypora incepta. Hall, Pal. New York, II, p. 167, pi. xlD, ba-f. 

 1890. Polypora incepta (Hall?). Ulrich, Geol. Sur. Illinois, VIII, p. 358, pi. Iv, 1. 

 Niagara: Lockport and Rochester, New York; Waldron, Indiana. 



Polypora intermedia Prout. 



1858. Polypora intermedia. Prout, Trans. St. Louis Acad. Sci., I, p. 272, pi. xv, 

 5, ha. 

 Hamilton: Falls of the Ohio. 



Polypora laevistriata (Hall). 



1883. Fenestella (Polypora) Isevistriata. Hall, Rep.. State Geologist New York 



for the year 1882, pi. xxviii, 14-16. 

 1887. Fenestella (Polypora) laevistriata. Hall and Simpson, Pal. New York, 

 VI, p. 159, pi. XXXV, 14-16. 

 Hamilton: Falls of the Ohio. 



Polypora largissima (Hall). 



1883. Fenestella largissima. Hall, Trans. Albany Institute, X, p. 164 (abstract, 

 1881, p. 22). 



1883. Fenestella (Polypora) largissima. Hall, Rep. State Geologist New York 



for the year 1882, pi. xxvii, 8, 9. 

 1887. Fenestella (Polypora) largissima. Hall and Simpson, Pal. New York, VI, 

 p. 156, pi. xxxiv, 8, 9. 

 Upper Helderberg: Central New York. 



Polypora latitruncata (Hall). 



1884. Fenestella latitruncata. Hall, Thirty-sixth Ann. Rep. New York State 



Museum, p. 58. 



1887. Fenestella (Polypora) latitruncata. Hall, Sixth Ann. Rep. State Geolo- 



gist New York for the year 1886, p. 68. 



1888. Fenestella (Polypora) latitruncata. Hall, Seventh Ann. Rep. State Geol- 



ogist New York for the year 1887, pi. xiii, 1-9; Forty-first Ann. Rep. 

 New York State Museum, pi. xiii, 1-9. 

 Hamilton: Darien, New York; West Williams, Ontario. 



Polypora levinodata (Hall). 



1883. Fenestella levinodata. Hall, Trans. Albany Institute, X, p. 169 (abstract, 



1881, p. 28). 

 1883. Fenestella (Polypora) levinodata. Hall, Rep. State Geologist New York 



for the year 1882, pi. xxxiii, 12-15. 

 1886. Fenestella (Polypora) levinodata. Hall and Simpson, Pal. New York, 

 VI, p. 169, pi. xhi, 12-15. 

 Hamilton: Falls of the Ohio. 



