BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 409 



DicELLocEPHALUs AFFiNis Matthew. See Platycolpiia afiiiiis. 

 DiCELLOCEPHALUs Barabuensis Whitfield. See Platycolpus barabuensis. 

 DicELLOCEPHALUs Belli Matthew. See Anomocarella belli. 

 DicELLOCEPHALUs(?) coRAX Matthew. See Dikelocephalus(?) corax. 

 DicELLOCEPHALus CRisTATUs Matthew. See Conokephalina? cristatuH. 

 DiCELLOCEPHALUs FiNALis Walcott. See Apatokephalus finalis. 

 DiCELLOCEPHALUs HARTii Lesley. See Dikelocephalus hartii. 

 DiCELLOCEPHALUs iNEXPECTANS Walcott. See Conokephalina inexpectans. 

 DiCELLOCEPHALUs MAGNiFicus Matthew. See Hungaia magnifua. 

 DiCELLOCEPHALUs MEGALOPS Matthew. See Conokephalina megalopa. 

 DiCELLOCEPHALUs OwENi Matthew. See Anomocarella? oweni. 

 DiCELLOCEPHALUs PAUPER Matthew. See Ptychaspis? pauper. 

 DiCELLOCEPHALUs PLANiFRONS Matthcw. See Anomocarella? planifrons. 

 DiCELLOCEPHALUs SE80STRIS Matthew. See Ptychaspis sesostris. 

 DiCELLOCEPHALUs TRiBULis Walcott. See Dikelocephalus tribulis. 

 DicELLOGRAPsus Hopkinsou. See Dicellograptus Hopkinson. 



DICELLOGRAPTUS Hopkinson. Genotype: Didymograptus elegans Carruthers. 



Dicellograpsus Hopkinson, Geol. Mag., 8, 1871, p. 20. 



Dicellograptus Zittel, Handb. Pal., 1, 1879, p. 300.— Tullberg, Sveriges Geol. 

 Unders., Ser. C, No. 55, 1883, pp. 12, 14.— Herrmau, Geol. Mag., dec. 3, 2, 

 1885, p. 451. — Koken, Die Leitfoseilien, Leipzig, 1896, p. 329. — Wiman, 

 Bull. Geol. Inst. Univ. Upsala, 2, pt. 2, 1896, p. 264.— Walther, Zeits. d. d. 

 geol. Gesell., 49, 1897, p. 256.— Roemer and Freeh, Leth. geog., Leth Pal., 

 1, 3 Lief, 1897, p. 617.— Grabau and Shimer, N. A. Index Fossils, 1, 1906, p. 

 32.— Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 291-293; 

 Zittel-Eastman Textb. Pal., 2d ed., 1913, p. 130. 



Dicellograptus complanatus Lapworth. 



Dicellograptus complanatus Lapworth, Ann. Mag. Nat. Hist., 5th ser., 5, 1880, 

 p. 160, pi. 5, figs. 17a-e.— Tullberg, Sver. Geol. Undera., Afh. och Uppa., 

 Ser. C, 50, 1882, p. 18.— Roemer and Freeh, Leth. Pal., 1, 1897, p. 618, 

 fig. 183.— Elles and Wood, Mon. British Grapt., 1904, p. 139, pi. 20. figs. 

 lad.— Grabau and Shimer, N. A. Index Fossils, 1, 1906, p. 32, figs. 53a, b.— 

 Ruedemann, Mem. New York State Mus., 11, pt. 2, 1908, pp. 294, 295. 



Ordovician: Scotland and Ireland (Upper Hartfell); Scania (Trinucleua beds); 

 Arbuckle Mountains, Oklahoma (Sylvan). 



Pledotype.—C-dt. No. 54267, U.S.N.M. 



Dicellograptus dlvarlcatus (Hall). 



Graptolithus divaricatus Hall, Pal. New York, 3, 1859, p. 514, figs. l-A; New 



York State Cab. Nat. Hist., 13th Ann. Rep., 1860, p. 58, figs. 1-4; Geol. Surv. 



Canada, Can. Org. Rem., dec. 2, 1865, p. 14, fig. 19.— Lealey, Geol. Surv. 



Pennsylvania, Rep. P4, 1889, p. 264, figa. 

 Graptolithus (Dicrauograptus) divaricatua Hall, New York State Cab. Nat. Hist., 



20th Ann. Rep., 1868. p. 180, fig. 20; rev. ed., 1870. p 212, fig. 20. 



