NicKLEs AND 13ASSLEK.] CATALOGUE OF GENEEA AND SPECIES. 337 



Orthopora subquadrata (Hall) — Continued. 



1887. Trematopora (Orthopora) sulxiuadrata. Hall and Simpaoii, Pal. New 

 York, \\, p. 177, pi. Iv, 10, pi. Ivi, 1, G. 

 Hamilton: Darien Center, New York. 

 Obs. See remark under Orthopora reticulata. 



Orthopora tortalinea (Hall). 



1883. Tremato])()ra tortalinea. Hall, Trans. Albany Institute, X, p. 180 (ab- 



stract, 1881, p. 180). 



1884. Trematopora tortalinea. Hall, Rep. State Geologist New York for the year 



1883, p. 10. 

 1887. Trematopora ((Orthopora) tortalinea. Hall and Simpson, Pal. New York, 



YI, p. 180, pi. Ivi, 9. 

 1899. Rhombopora tortalinea. Grabau, Bull. Buffalo Soc. Nat. Hist., VI, p. 165, 



fig. 55. 

 Hamilton: Hamburg, New York. 



Orthopora transversa (Hall). 



1883. Trematopora transversa. Hall, Trans. Albany Institute, X, p. 180 (ab- 



stract, 1881, p. 180). 



1884. Trematopora transversa. Hall, Rep. State Geologist New York for the 



year 1883, p. 8. 

 1887. Trematopora (Orthopora ?) transversa. Hall and Simpson, Pal. New York, 



VI, p. 187, pi. Iv, 12, pi. Ivi, 13, 14. 

 1889. Rhombopora ? transversa. Grabau, Bull. Buffalo Soc. Nat. Sci., VI, p. 164, 

 fig. 52. 

 Hamilton: Hamburg, Erie County, New York. 

 Obs. See remark under Orthopora elongata. 



PACHYDICTYA Ulrich. Genotype: Pachydictya robusta Ulrich. 

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

 1887. Pachydictya. Foerste, Bull. Sci. Lab. Denison Univ., II, p. 162. 



1889. Pachydictya. Miller, North American Geol. Pal., p. 313. 



1890. Pachydictya. Ulrich, Geol. Sur. Illinois, VIII, pp. 390, 522. 

 1893. Pachydictya. Ulrich, Geol. Minnesota, III, p. 145. 



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

 for the year 1894, p. 530. 



Pachydictya acuta (Hall). 



1847. Stictopora ? acuta. Hall, Pal. New York, I, p. 74, pi. xxvi, Sa-h. 



1875. Ptilodictya acuta. Nicholson, Pal. Province Ontario, p. 12, fig. 3. 



1882. Stictopora acuta. Ulrich, Jour. Cincinnati Soc. Nat. Hist., V, p. 168, pi. 

 viii, 1-lb. 



1886. Pachydictya acuta. Ulrich, Fourteenth Ann. Rep. Geol. Nat. Hist. Sur. 

 Minnesota, pp. 75, 76. 



1889. Pachydictya acuta. Ulrich, Contr. Micro-Pal. Cambro-Sil., Part II, ]>. 44. 



1893. Pachydictya acuta. Ulrich, Geol. Minnesota, III, p. 155, pi. viii, 11-17, pi. 

 ix, 7. 



1897. Pachydictya acuta. Whiteaves, Pal. Foss, III, p. 161. 



Stictopora or Pachydictya acuta (in part), of various authors. 

 Trenton: Trenton Falls and other localities in New York; Biirgin, Ken- 

 tucky; Decorah, Iowa; various localities in Minnesota; St. Andrews, 

 Manitoba. 



Pachydictya alcyone (Billings). 



1866. Ptilodictya alcyone. Billings, Catal. Sil. Foss. Anticosti, p. 36. 



Bull. 173 22 



