BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 963 



Petrocrania ulrichi Continued. 



Petrocrania ulrichi Raymond, Ann. Carnegie Mus., 7, 1911, p. 230 (gen. ref.). 

 Crania halli Sardeson, Bull. Minnesota Acad. Nat. Sci., 3, 1892, p. 328, pi. 4, figs. 



8-10. 

 Black River (Decorah) and Trenton (Prosser): Minneapolis, St. Paul, Fountain, 



etc., Minnesota. 



PHACELOPORA Ulrich. Genotype: P. pertenuis Ulrich. 



PhaceloporaTJlrich, Geol. Surv. Illinois, 8, 1890, p. 368. (Ulrich, in press), Miller, 

 N. A. Geol. Pal., 1889, p. 314. Pocta, Syst. vSil. Centre Boheme, 8, pt. 1, 

 1894, p. 16. Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, 

 p. 600. Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 22. 

 Grabau and Shinier, N. A. Index Fossils, 1, 1907, p. 121. 



Phacelopora constricta Ulrich. 



Phacelopora constricta Ulrich, Geol. Surv. Illinois, 8, 1890, p. 406, pi. 29, fig. 2. 

 Simpson, 14th Ann. Rep. State Geol. New York for 1894, 1897, fig. 209 (p. 

 600). Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 346. 

 Trenton: Burgin, Kentucky. 



Observation. Now regarded as the interior cast of some undetermined species 

 of Helopora or Arthroclema. 

 Holotype.Cat. No. 43271, U.S.N.M. 



Phacelopora pertenuis Ulrich. 



Phacelopora pertenuis Ulrich, Geol. Surv. Illinois, 8, 1890, p. 406, pi. 29, figs. 1-lc. 



Keyes, Missouri Geol. Surv., 5, 1894, p. 13, pi. 33, fig. 3. Simpson, 14th Ann. 



Rep. State Geol. New York for 1894, 1897, figs. 207, 208 (p. 600). Grabau and 



Shimer, N. A. Index Fossils, 1, 1907, p. 121, fig. 178i. 

 Upper Medinan (GirardeaAi): Thebes, Illinois. 

 Richmond (English Head): Island of Anticosti. 

 Cotypes.Csit. No. 43272, U.S.N.M. 



PHACOPIDELLA Reed. Genotype: Phacops glockeri Barrande. 



Acaste Goldfuss (not Leach, 1811), Neues Jahrb. Min., etc., 1843, pp. 541, 563. 

 Salter, Mem. Geol. Surv. U. King., dec. 7, 1853, pi. 1; Mon. British Tril., 

 Pal. Soc., 1864, p. 14. Schmidt, Mem. 1'Acad. Imp. Sci. St. Petersb., 7th 

 ser., 30, 1881, pp. 61, 67. Zittel, Handb. Pal., 2, 1885, p. 614. Vogdes, Cal. 

 Acad. Sci., Occ. Papers, 4, 1893, p. 333. Koken, Die Leitfossilien, Leipzig, 

 1896, p. 32. Beecher, Amer. Jour. Sci., 4th ser., 3, 1897, p. 105, pi. 3, fig. 32. 

 Lindstrom, Kongl. Sven. Vet.-Akad. Handl., 34, No. 8, 1901, p. 27. 



Phacopidella Reed, Geol. Mag., n. s., dec. 5, 2, 1905, p. 173. Raymond, Zittel- 

 Eastman Textb. Pal., 1913, p. 726. 



Phacopidella downingiue (Murchison). 



Phacops downingiae Murchison, Silurian System, 2d ed., 1839, pi. 18, fig. 5. 



Salter, Mon. British, Tril., 1862, pi. 2, figs. 17-25. 

 Silurian: England; Arisaig, Nova Scotia. 



Phacopidella orestes (Billings). 



Phacops Orestes Billings, Canadian Nat. Geol., 5, 1860, p. 65, fig. 10; Cat. Sil. 



Foss. Anticosti, Geol. Surv. Canada, 1866, p. 61 (loc. occ.). 

 Acaste orestes Schuchert and Twenhofel, Bull. Geol. Soc. Amer., 21, 1890, p. 710. 

 Antlcostian (Gun River, Jupiter River): East Point, etc., Anticosti. 



PHACOPS Emmrich. Genotype: P. latifrons Bronn. 



Phacops Emmrich, Neues Jahrb. Min., etc., 1845, p. 38. Hawle and Corda, Abh. 



d. k. bohmischen Gesel. d. Wiss., 1 (extract), 1847, p. 96, pi. 5, fig. 57. 



Emmons, Amer. Geology, 1, pt. 2, 1855, p. 214. Pictet, Traite de Pal., 2d ed., 



