850 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Nemagraptus gracilis distans Ruedemann. 



Nemagraptus gracilis var. distans Ruedemann, Mem. New York State Mus., 11, 



pt. 2, 1908, p. 286, pi. 16, figs. 7, 8; figs. 200, 201. 

 Chazyan (Normanskill) : Glenmont, New York. 



Nemagraptus gracilis surcularis (Hall). 



Graptolithus gracilis (part) Hall, 13th Ann. Rep. New York State Cab. Nat. Hist., 

 1860, p. 56, figs. 1-4; Can. Org. Rem., Geol. Surv. Canada, dec. 2, 1865, p. 13, 

 figs. 12-15. 



Ccenograptus surcularis Hall, 20th Ann. Rep. New York State Cab. Nat. Hist., 

 1868, p. 179, figs. 13-16; ibid., rev. ed., 1870, p. 211, figs. 13-16.— Lapworth, 

 Cat. West. Scott. Foss., 1876, pi. 3, fig. 64; Rep. and Proc. Belfast Nat. Field 

 Club, 1877, p. 143, pi. 7, fig. 12. 



Stephanograptus surcularis Walcott, Bull. Geol. Soc. Amer., 10, 1890, p. 338. 



Nemagraptus gracilis var. surcularis Elles and Wood, Monogr. British Grapt., 

 pt. 3, 1903, p. 129, pi. 19, figs. 2a-d; fig. 77a-c— Ruedemann, Mem. New York 

 State Mus., 11, pt. 2, 1908, pp. 282-285, pi. 17, figs. 1, 2; figs. 196, 197. 



Chazyan (Normanskill): Kenwood, Stockport, and Glenmont, New York; Ala- 

 bama; Great Britain. 



Plesiotype.— Cat. No. 54263, TJ.S.N.M. 



NEMAPODIA Emmons. Genotype: N. tenuissima Emmons. 



Nemapodia Emmons, Nat. Hist. New York, Agric, 1, 1846, p. 68. — Hall, Pal. 

 New York, 1, 1847, p. 319; Proc. Amer. Assoc. Adv. Sci., 2, 1850, p. 258 — 

 Miller, N. A. Geol. Pal., 1889, p. 519. 



Nemapodia tenuissima Emmons. 



Nemapodia tenuissima Emmons, Nat. Hist. New York, Agric, 1, 1846, p. 68, 



pi. 14, fig. 1.— Hall, Pal. New York, 2, 1852, p. 32, footnote.— Geinitz, Neuea 



Jahrb. Min., etc., 1861, p. 66. 

 Cambrian or Ordovician: Salem, Washington County, New York. 



NEMATOPHYCUS Carruthers. Genotype: Prototaxites logani Dawson. 



Nematophycus Carruthers, Micr. Jour. London, 8, 1872, p. 160. — Roemer, Leth. 

 geog., 1 Theil., Leth. Pal., Erste] Lief, 1880, p. 124.— Grabau, Bull. New York 

 State Mus., 9, 1901, p. 132; Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 132. 



Nematophycus crassus (Penhallow). 



Nematophyton crassum Penhallow, Trans. Royal Soc. Canada, 7, sec. 4, 1889, 



p. 23, pi. 1, figs. 2?, 3?, 5, 6; Proc. U. S. Nat. Mus., 16, 1893, p. 115, pi. 16, 



fig. 3; Canadian Rec. Sci., 7, 1896, p. 156, pi. 2, figs.; p. 155— Grabau, Bull. 



Geol. Soc. America, 11, 1900, p. 363. 

 Nematophycus crassus Grabau, Bull. New York State Mus. , 45, 1901, p. 132; Bull. 



Buffalo Soc. Nat. Sci., 7, 1901, p. 132. 

 Devonian: Gaspe and New York. 

 Silurian (Akron): Buffalo, New York. 



Nematophyton crassum Penhallow. See Nematophycus crassus. 



NEMATOPORA Ulrich. Genotype: N. ovalis Ulrich. 



Nematopora Ulrich, Amer. Geol., 1, 1888, p. 234.— Miller, N. A. Geol. Pal., 1889, 

 p. 313.— Ulrich, Geol. Surv. Illinois, 8, 1890, pp. 401, 644.— Pocta, Syst. Sil. 

 Centre Boheme, 8, pt. 1, 1894, p. 17. — Simpson, 14th Ann. Rep. State Geol. 

 New York for 1894, 1897, p. 553.— Ulrich, Zittel's Textb. Pal. (Engl, ed.), 

 1896, p. 281— Nickles and Bassler, Bull. U. S. Geol. Surv., 173, 1900, p. 43.— 

 Bassler, Bull. U. S. Geol. Surv., 292, 1906, p. 58— Grabau and Shimer, N. A. 

 Index Fossils, 1, 1907, p. 153.— Bassler, Bull. U. S. Nat. Mus., 77, 1911, p. 155' 

 Zittel-Eastman Textb. Pal., 1913, p. 343. 



