450 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



DIPLOGRAPTUS Continued. 



1 Theil, Leth. Pal., 1, 3 Lief., 1897, p. 624. Walther, Zeits. d. d. geol. 

 Gesell., 49, 1897, p. 250. Ruedemann, Amer. Nat., 32, 1898, p. 3: Zittel- 

 Eastman Textb. Pal., 1, 1900, p. 119. Elles and Wood, Mon. British Grapt., 

 Pal. Soc., 1903, p. xxxii. Ruedemann, Mem. New York State Mus., 7, 1904, p. 

 718, 719. Grabau and Shimer, N. A. Index Fossils, 1, 1906, p. 33. Ruede- 

 mann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 339-341; Zittel-East- 

 man Textb. Pal., 2d ed., 1913, p. 130. 



Glyptograptus Zittel, Handb. Pal., 1, 1879, p. 300. Wiman, Bull. Geol. Inst. 

 Univ. Upsala, 2, pt. 2, No. 4, 1896, p. 264. Roemer and Freeh, Leth. geog., 

 1 Theil, Leth. Pal., 1, 3 Lief., 1897, pp. 625, 632. 



Diplograptus acutus (Elles and Wood). 



Diplograptus vulgatus var. acutus, Elles and Wood, Mon. British Grapt., pt. 6, 



1907, p. 242, pi. 30, figs. 3a-c. 

 Ordovician: South Scotland (Glenkiln); Arkansas (Stringtown). 



DIPLOGRAPTUS AMPLEXICAULE Walcott(part). See Diplograptus peosta. 

 DIPLOGRAPTUS AMPLEXICAULE Whitfield. See Diplograptus amplexicaulis pertenuis. 



Diplograptus (Glyptograptus) amplexicaulis (Hall). 



Graptolithus amplexicaule Hall, Pal. New York, 1, 1847, pp. 79, 316, pi. 26, figs. 



lla, b. Hitchcock, Geol. Vermont, 1, 1861, p. 291, text fig.; New York 



State Cab. Nat. Hist., 20th Ann. Rep., 1868, pi. 3, figs. 6, 7, rev. ed., 1870, 



p. 223. 

 Diplograpsus amplexicaule Emmons, Amer. Geology, 1, pt. 2, 1855, p. 236, pi. 7, 



figs, lla, b. 

 Diplograptus amplexicaulis Lapworth, Proc. and Trans. Roy. Soc, Can., 1886, 4, 



p. 184. White Trans. New York Acad. Sci., 15, 1895, p. 93. Ruedemann, 



Bull. New York State Mus., 39, 1901, p. 497ff. 



Diplograptus foliaceus mut. amplexicaule Gurley, Jour. Geol., 4, 1896, p. 298. 

 Diplograptus (Glyptograptus) amplexicaulis Freeh, Leth. geog., 1 Theil, Leth. 



Pal., 1, 3 Lief., 1897, p. 632 (gen. ref.). Ruedemann, Mem. New York State 



Mus., 11, pt. 2, 1908, pp. 361-365, pi. 25, figs. 10-13, text figs. 302-307. 

 Trenton: Trenton Falls, Middleville, and Washington County, New York. 



Diplograptus amplexicaulis pertenuis Ruedemann. 



Diplograptus amplexicaule Whitfield, U. S. Geol. Sur. West 100th Merid., 



Wheeler's Rep., 4, Pal., 1877, p. 19. Ruedemann, Bull. New York State 



Mus., 8, 1901, p. 533, footnote. 

 Diplograptus amplexicaulis var. pertenuis Ruedemann, Mem. New York State 



Mus., 11, pt. 2, 1908, pp. 365, 366, pi. 25, figs. 14-16, text figs. 308-310. 

 Trenton (Snake Hill): Lansingburg and Troy, New York. 



Diplograptus (Glyptograptus) angustifolius (Hall). 



Graptolithus angustifolius Hall, Pal. New York, 3, 1859, p. 515, figs. 1, 2; New York 

 State Cab. Nat. Hist., 13th Ann. Rep., 1860, p. 59, figs. 1, 2. 



Diplograptus angustifolius Nicholson, Geol. Soc. Lond. Quar. Jour., 1868, p. 

 525, pi. 19, figs. 8, 9. Lapworth, Cat. West. Scott. Foss., 1876, pi. 2, fig. 35; 

 Belfast Nat. Field Club., Rep. and Proc., App., 1, pt. 4, 1877, p. 132, pi. 6, 

 fig. 11; Ann. Mag. Nat. Hist., 5th ser., 5, 1880, p. 21. Walcott, Alb. Inst. 

 Trans., 10, 1881 (adv. sheets, 1879, p. 34). Lapworth, Geol. Sur. Can. Rep., 

 2dser., 2, 1886, p. 22D; Sci., 9, 1887, p. 320.-Ami, Geol. Sur. Can. Rep. '2d ser., 

 3, pt. 2, 1889, p. 116K. Walcott, Bull. Geol. Soc. Amer. 1, 1890, p. 339. Barrois, 

 Ann. Soc. Geol. du Nord,20,1892, p. 145. Gurley, Jour. Geol., 4, 1896, p. 





