BIBLIOGKAPHIC LIST OF GENERA AND SPECIES, 411 



Dlcellograptiis divaricatus salopleusis EUes and Wood. 



Dicellograptus divaricatus var. ealopiensis Elles and Wood, Mon. British Grapt., 

 pt. 4, 1904, p. 145, pi. 20, figs. 7a-e.— Ruedemann, Bull. New York State 

 Mus., 11, pt. 2, 1908, p. 300, pi. 18, fig. 5, text figs. 217-219. 



Ordovician: Shropshire, England, and South Scotland (Glenkiln); Stockport and 

 Kenwood, New York (Normanskill). 



Dicellograptus eleoans Gurley. See Dicellograptus divaricatus l)icurvatus. 



Dicellograptus gurleyl Lapworth. 



Dicellograptus gurleyi (Lapworth MSS) Gurley, Jour. Geol., 4, 1896, p. 70. — 



Ruedemann, Bull. New York State Mus., 11, pt. 2, 1908, pp. 303-306, pi. 19, 



figs. 7-9, text figs. 223-228. 

 Chazyan (Normanskill): Stockport, Glenmont, and Mount Moreno, New York; 



Arkansas (Stringtown). 

 Plesiotype.— Cat. No. 54265, U.S.N.M. 



Dicellograptu.s intortus Lapworth. 



Dicellograptus intortus Lapworth, Ann. and Mag. Nat. Hist., 5th ser., 5, 1880, p. 

 161, pi. 5, fig. 19a.— Clark, Geol. Mag., 4th ser., 9, 1902, p. 498.— Elles and 

 Wood, Mon. British Grapt., pt. 4, 1904, p. 146, figs. 90a, b, pi. 20, figs, a-f.— 

 Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 302, 303, figs. 

 221, 222; pi. 18, figs. 9-10. 



Dicellograpsus intortus Gurley, Jour. Geol., 4, 1896, p. 95. 



Dicellograptus intortus polythecatus Gurley, Jour. Geol., 4, 1896, p. 70. 



Ordovician: Great Britain (Glenkiln); Stockport and Speigletown, New York; 

 Arkansas (Normanskill). 



Dicellograptus intortus polythecatus Gurley. See Dicellogi'aptus intortus. 



Dicellograptus mensurans Ruedemann. 



Dicellograptus mensurans Ruedemann, Mem. New York State Mus., 11, 1908, pt. 



2, pp. 295, 296, pi. 18, fig. 2, text figs. 210, 211. 

 Chazyan: Kenwood,' New York (Normanskill); Alabama (Athens). 



Dicellograptus moffatensis alabameusis Ruedemann. 



Dicellograptus moffatensis var. alabamensis Ruedemann, Mem. New York State 



Mus., 11, pt. 2, 1908, pp. 310-312, pi. 20, figs. 1, 2, text figs. 234-236. 

 Chazyan (Athens): Near Pratt's Ferry, Bil)l) County, Alabama. 



Dicellograptus moffatensis var. divaricatus Ami. See Dicellograptus divari- 

 catus. 



Dicellograptus moffatensis var. divaricatus Lapworth. See Dicellograptus 

 divaricatus rigidus. 



Dicellograptus rigidus Gurley. See Dicellograj^tus divaricatus rigidus. 



Dicellograptus sextans (Hall). 



r;raptolithu8 sextans Hall, Pal. New York, 1, 1847, p. 273, pi. 74, fig. 3.— Salter, 

 Quar. Jour. Geol. Soc, 5, 1849, p. 17, pi. 1, fig. 10. — Chapman, Canadian Jour., 

 n. B., 1, 1856, p. 389, fig. 2.— €arruthers, Siluria, 4th ed., 1867, p. 61, fig. 8.— 

 Hall, 20th Rep. New York State Cab. Hist., 1868, pp. 180, 227; rev. ed., 1870, 

 pp. 212, 224.— Nicholson, Quar. Jour. Geol. Soc, 24, 1868, p. 134. 



Diplograptus? sextans Mc'Coy, British Pal. Foss., 1855, p. 9. 



Didymograptus sextans Nicholson, Ann. Mag. Nat. Hist., 4th eer., 5, 1870, p, 354, 

 pi. 9, fig. 9. 



