BIBLIOGRAPHIC LIST OP GENERA AND SPECIES. 849 



Neinagraptus exilis linearis Ruedemann. 



Nemagraptus exilis var. linearis Ruedemann, Mem. New York State Mus., 11, pt. 



2, 1908, pp. 290, 291, pi. 17, figs. 10-12, figs. 204, 205. 

 Chazyan (Normanskill): Speigletown, Stockport, Kenwood, etc., New York. 



Nemagraptus gracilis (Hall). 



Graptolithus gracilis Hall, Pal. New York, 1, 1847, p. 274, pi. 74, figs. 6a-d; 12th 

 Ann. Rep. New York State Cab. Nat. Hist., 1859, p. 58, fig. 10; Pal. New 

 York, 3, 1859, p. 510, figs. 1-5; pi. 512, fig. 6; p. 513, fig. 7; 13tli Ann. Rep. 

 New York State Cab. Nat. Hist., 1860, p. 56, figs. 6, 7; Geol. Surv. Canada, 

 dec. 2, 1865, pp. 13, 14, figs. 16-18.— Bailey, Mem. Geol. Surv. Ireland, sheet 

 133, 1866, p. 12, fig. 3; Dublin Quart. Jour. Sci., 2, 1862, p. 316, pi. 22; figs. 

 5a-c— Walcott, Trans. Albany Inst., 10, 1883 (adv. sheets, 1879), p. 35 — 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 265, figs. 



Stephanograptus gracilis Geinitz, Neues Jahrb. Min., etc., 1866, p. 124. — Walcott, 

 Bull. Geol. Soc. Amer., 1, 1890, p. 338. 



Helicograpsus (Graptolithus) gracilis Nicholson, Ann. Mag. Nat. Hist., 4th ser., 



I, 1868, p. 56, pi. 3, fig. 15. 



Helicograptus gracilis Dodge, Amer. Jour. Sci., 3d ser., 40, 1890, p. 153. 



Cladograpsus gracilis Carruthers, Geol. Mag., 5, 1868, p. 130. 



Coenograptus gracilis Hall, New York State Cab. Nat. Hist., 20th Ann. Rep., 1868, 

 pp. 179, 180, figs. 13-19; p. 226; rev. ed., p. 211, figs. 17-19.— Lapworth, Cat. 

 West. Scott. Foss., 1876, p. 5, pi. 3, fig. 65; Belfast Nat. Field Club, Rep. and 

 Proc, App., 1877, p. 142, pi. 7, fig. 11— Zittel, Handb. Pal., 1, Munich, 1879, 

 p. 293, fig. 198; p. 298, fig. 203.— Tullberg, Sver. Geol. Unders., ser. C, No. 

 50, 1882, p. 20.— Herrmann, Nyt. Mag. f. Naturvidensk, 27, 1885, p. 359, pi. 2, 

 fig. 21. — Lapworth, Roy. Soc. Canada, Proc. and Trans., 4, 1887, p. 178f, 

 p. 169.— Gurley, Geol. Surv. Ark. Ann. Rep., 3, 1892, p. 408.— Roemer and 

 Freeh, Leth. Geog., 1 Theil, Leth. Pal., 1, 1897, p. 584, fig. 155.— Hall, Geol. 

 Mag., n. s., dec. 4, 6, 1899, p. 445.— Ruedemann, Bull. New York State Mus., 

 42, 1901, p. 528; ibid., 52, 1902, p. 583, fig. 13.— Clark, Geol. Mag., 4th ser. 

 9, 1902, p. 498.— Weller, Geol. Surv. New Jersey, Pal., 3, 1902, p. 53; ibid., 

 1903, p. 214, pi. 16, fig. 19— Grabau and Shimer, N. A. Index Fossils, 1, 1906, 

 p. 28, fig. 40. 



Coenograptus (Helicograptus) gracilis Nicholson, Monog. British Grapt., 1872, p. 

 45, fig. 14; p. 113, fig. 55; p. 66, fig. 35. 



Monograptus gracilis Whitfield, Amer. Jour. Sci., 3d ser., 26, 1883, p. 380. 



Nemagraptus gracilis Elles and Wood, Monogr. British Grapt., pt. 3, 1903, p. 127, 

 pi. 19, figs, la-f; fig. 76a, b.— Ruedemann, Mem. New York State Mus., 11, 

 pt. 2, 1908, pp. 277-282, pi. 16, figs. 1^, 9; figs. 191, p. 276; 192-195, p. 279. 



Rastrites barrandi Harkness, Geol. Soc. Quart. Jour., 11, 1855, p. 475. 



Nemagraptus elegans Emmons, Amer. Geology, 1, pt. 2, 1856, p. 109, pi. 1, fig. 6. 



Chazyan (Normanskill): Kenwood, Glenmont, Stockport, etc., New York; New 

 Jersey; Maine; Canada; Tennessee; Arkansas. 



Ordovician: Wales, Sweden, Scotland (Glenkill); Australia. 



Nemagraptus gracilis approximates Ruedemann. 



Nemagraptus gracilis Var. approximatus Ruedemann, Mem. New York State Mus., 



II, pt. 2, 1908, p. 287, pi. 16, figs. 5, 6. 



Chazyan (Normanskill): Kenwood and Glenmont, New York. 



Nemagraptus gracilis crassicaulis (Gurley). 



Stephanograptus crassicaulis Gurley, Jour. Geol., 4, 1896, p. 68. 



Nemagraptus gracilis var. crassicaulis Ruedemann, Mem. New York State Mus., 



11, pt. 2, 1908, pp. 285, 286, fig. 199. 

 Chazyan (Normanskill): Stockport, New York. 



