1074 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



PTILOQRAPSUS Nicholson. See Ptilograptus Hall. 



PTILOGRAPTUS Hall. Genotype: P. plumosus Hall. 



Ptilograptus Hall, Geol. Surv. Canada, Can. Org. Hem., dec. 2, 1865, p. 139; 

 20th Rep. New York State Cab. Hist., 1868, p. 218; rev. ed., p. 252. Zittel, 

 Handb. Pal., 1, 1879, p. 289. Spencer, Bull. Mus. Univ. State Missouri, 1, 

 1884, p. 41; Trans. Acad. Sci. St. Louis, 4, 1884, pp. 563, 591. Miller, N. A. 

 Geol. Pal., 1889, p. 201. Pocta, Syst. Sil. Centre Boheme, 8, pt. 1, 1894, p. 

 201. Wiman, Nat. Sci., 9, 1896, p. 246. Roemer and Freeh, Leth. geog., 1 

 Theil, Leth. Pal., 1, 3 Lief., 1897, p. 579. Ruedemann, Mem. New York 

 State Mus., 7, pt. 1, pp. 587, 588. Grabau and Shimer, N. A. Index Fossils, 

 1, 1906, p. 27. Ruedemann, Mem. New Yor State Mus., 11, pt. 2, 1908, 

 pp. 147, 148, 175, 176; Zittel-Eastmau Textb. Pal., 2d ed., 1913, p. 128. 

 Ptilograpsus Nicholson, Ann. Mag. Nat. Hist., 4th ser., 1, 1868, p. 239; Mon. 

 British Grapt., 1872, p. 126. 



Ptilograptus foliaceus Spencer. 



Ptylograpsus foliaceus Spencer, Canadian Nat., n. s., 7, 1878, pp. 458, 462. 



Ptilograptus foliaceus Spencer, Bull. Mus. Univ. State Missouri, 1, 1884, pp. 15, 

 41, pi. 6, figs. 7, 7a; Trans. Acad. Sci. St. Louis, 4, 1884, p. 591, pi. 6, fig. 7. 

 Miller, N. A. Geol. Pal., p. 201, fig. 210. Gurley, Jour. Geol., 4, 1896, pp. 

 100, 309. Bassler, Bull. U. S._Nat. Mus., 65, 1909, pp. 16, 17, fig. 18. 



Niagaran dolomite: Hamilton, Ontario. 



Ptilograptus geinitzianus Hall. 



Ptilograptus geinitzianus Hall, Geol. Surv. Canada, Can. Org. Rem., dec. 2, 1865, 

 p. 140, pi. 21, figs. 5-8; 20th Rep. New York State Cab. Nat. Hist., 1868, pi. 4, 

 figs. 17, 18; rev. ed., 1870, pi. 4, figs. 17, 18, p. 225. Gurley, Jour. Geol., 4, 1896, 

 p. 300. Roemer and Freeh, Leth. Pal., 1, 1897, p. 580. Ruedemann, Mem. 

 New York State Mus., 7, pt. 1, 1904, p. 590, pi. 4, fig. 16. 



Canadian: Point Levis, Quebec (Levis, Didymograptus zone); Deepkill, Rennse- 

 laer County, New York (Deepkill). 



Ptilograptus hartnageli Ruedemann. 



Ptilograptus hartnageli Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, 



p. 149, pi. 1, fig. 9; text fig. 54. 

 Clinton: Sterling Station, Cayuga County, New York. 



Ptilograptus plumosus Hall. 



Ptilograptus plumosus Hall, Geol. Surv. Canada, Can. Org. Rem., dec. 2, 1865, p. 

 140, pi. 21, figs. 1, 2, 3, 4. Billings, Geol. Surv. of Canada, Pal. Fossils, 1, 

 366, 375. Hall, New York State Cab. Nat. Hist., 20th Ann. Rep., 1868, pi. 

 4, fig. 16. Ami, Geol. Surv. of Canada, Rep. 1889, 2d ser., 3, pt. 2, p. 117k. 

 Gurley, Jour. Geol., 4, 1896, 300. Roemer and Freeh, Leth. geog., 1 Theil, 

 Leth. Pal., 1, 1897, p. 579, fig. 151; p. 564, fig. 137. Ruedemann, New York 

 State Pal., Ann Rep., 1902, p. 570; Mem. New York State Mus., 7, pt. 1, 

 1904, pp. 588-589, pi. 4, figs. 14, 15. Grabau and Shimer, N. A. Index 

 Fossils, 1, 1906, p. 27, fig. 38. 



Ptilograpsus plumosus Nicholson, Mon. British Grapt., 1872, p. 126, fig. 66. 



Canadian: Point Levis, Quebec (Levis, Didymograptus zone); Deepkill and 

 Mount Moreno, near Hudson, New York (Deepkill, Diplograptus dentatua 

 zone); Cowhead, Newfoundland. 



Ptilograptus poctal Ruedemann. 



Ptilograptus poctai Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 



148, 149, pi. 1, fig. 8, fig. 53. 

 Chazyan (Normanskill): Glenmont, Albany County, New York. 



