BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 409 



DICELLOCEPHALUS AFFiNis Matthew. See Platycolpus affinis. 

 DICELLOCEPHALUS BARABUENSis Whitfield. See Platycolpus barabuensis. 

 DICELLOCEPHALUS BELLI Matthew. See Anomocarella belli. 

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

 DICELLOCEPHALUS CRISTATUS Matthew. See Conokephalina? cristatiiH. 

 DICKLLOCEPHALUS FiNALis Walcott. See Apatokephalus fiualis. 

 DICELLOCEPHALUS HARTII Lesley. See Dikelocephalus hartii. 

 DICELLOCEPHALUS INEXPECTANS Walcott. See Conokephalina inexportans. 

 DICELLOCEPHALUS MAGNIFICUS Matthew. See Hungaia magnifica. 

 DICELLOCEPHALUS MEQALOPS Matthew. See Conokephalina megalops. 

 DICELLOCEPHALUS OWENI Matthew. See Anomocarella? oweni. 

 DICELLOCEPHALUS PAUPER Matthew. See Ptychaspis? pauper. 

 DICELLOCEPHALUS PLANIFRONS Matthew. See Anomocarella? planifrons. 

 DICELLOCEPHALUS SESOSTRIS Matthew. See Ptychaspia sesostris. 

 DICELLOCEPHALUS TRIBULIS Walcott. See Dikelocephalus tribulis. 

 DICELLOGRAPSUS Hopkinson. 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, Sverigea Geol. 



IUnders., Ser. C, No. 55, 1883, pp. 12, 14. Herrman, Geol. Mag., dec. 3, 2, 

 1885, p. 451. Koken, Die Leitfossilien, 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 Shinier, 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-. Tullberg, Sver. Geol. Unders., Afh. och Upps., 

 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 Shinier, N. A. Index Fossils, 1, 1906, p. 32, figs. 53a, b. 

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



Ordovieian: Scotland and Ireland (Upper Hartfell); Scania (Trinucleus beds); 

 Arbuckle Mountains, Oklahoma (Sylvan). 



Plesiotype.Csit. No. 54267, U.S.N.M. 



Dicellograptus dlvarlcatus (Hall). 



Graptolithus divaricatus Hall, Pal. New York, 3, 1859, p. 514, figs. 1-4; 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. Lesley, Geol. Surv. 



Pennsylvania, Rep. P 4, 1889, p. 264, figs. 

 Graptolithus (Dicranograptus) divaricatus Hall, New York State Cab. Nat. Hist., 



20th Ann. Rep., 1868, p. 380, fig. 20; rev. ed., 1870, p. 212, fig. 20. 



