BIBLIO(!RAPHIC LIST OF GENERA AND SPECIES. 413 



DICELLOMUS— Coutinued. 



Schmidtia Zittel (part) (not Volborth), Handb. Pal., 1, 1880, p. 665. 

 Obolella Hall and Clarke (part), 11th Ann. Rep. State Geol. New York, 1892, pp. 

 240-241; 45th Ann. Rep. New York State Mtis., 1892, pp. 556-557; Pal. New 

 York, 8, pt. 1, 1892, pp. 66-73. 



Dlcellomus nanus (Meek and Hayden). 



Obolella nana Meek and Hayden, Proc. Acad. Nat. Set. Philadelphia, l;:5, 1862 

 p. 435; Amer. Jour. Sci., 2d ser., 33, 18G2, p. 73, figs, la, b, 2a, b.— Billinga 

 Geol. Surv. Canada, Pal. Foss., 1, 1862, pp. 67, 68. — Meek and Hayden 

 Smiths. Cont. Knowl., 172, Pal. Upper Missouri, pt. 1, 1865, p. 4, pi. 1, figs 

 3a-3d. — WTiitfield, U. S. Geogr. and Geol. Surv. Rocky Mountains Region 

 Rep. Geol. Res. Black Hills of Dakota, by Newton and Jenney, 1880, pp 

 340-341, pi. 2, figs. 14-17.— Walcott, Bull. U. S. Geol. Surv., 30, 1886, p. 111.— 

 Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pp. 69, 70. 



Dicellomus nanus Walcott (part), Mon. U. S. Geol. Surv., 32, pt. 2, 1899, p. 447, 

 pi. 60, figs. 3a-d (not fig. 3); Proc. U. S. Nat. Mus., 28, 1905, pp. 314-315; 

 Mon. U. S. Geol. Surv., 51, 1912, p. 573, pi. 53, figs. 1, la-1, 2, 2a, 3, 3a-d. 



Lower Ordovician: Near Buffalo Fork Peak, Uinta County, Wyoming. Also 

 Upper and ^Middle Cambrian of Montana, Miseotiri, etc. 



Plesiotypes.— Cat. No. 31903, 51908, U.S.N.M. 



DiCHOGRAPSus Salter. See Dichograptus Salter. 



DicHOGRAPSus ARANEA Salter. See Dichograptus octobrachiatus. 



DiCHOGRAPSus FLEXiLis Hall. See Clonograptus flexilis. 



DiCHOGRAPSUs LOGANi Nicholsou. See Loganograptus logani. 



DicHOGRAPsus MiLESi Hall. See Clonograptus milesi. 



DicHOGRAPSUs OCTOBRACHIATUS Nicholson. See Dichograptus odobrachiatus. 



DiCHOGRAPSus ocTONARius Hall. See Dichograptus octonarius. 



DiCHOGRAPSUS HAMULUS Gurley. See Temnograptus? ramulus. 



DicHOGRAPSUS REMOTUS Gurloy. See Clonograptus remotus. 



DiCHOGRAPSUS RiGiDus Hall. See Clonograptus rigidus. 



DICHOGRAPTUS Salter. 



Genotype: Dichograpsus aranea Salter=Graptolithu3 octobrachiatus Hall. 



Dichograpsus Salter, Quart. Jour. Geol. Soc. London, 19, 1863, p. 139. — Nicholson, 

 ibid., 24, 1868, p. 9, 127.— Carnithers, Geol. Mag., 5, 1868, p. 73, 129.— Nichol- 

 son, Mon. British Grapt., 1872, p. 106; Ann. Mag. Nat. Hist., 4th ser., 11, 

 1873, p. 138. 



Dichograptus, Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, p. 217; rev. 

 ed., 1870, p. 251.— Zittel, Handb. Pal., 1, 1879, p. 299.— TuUberg, Sver. Geol. 

 Unders., ser. C, No. 55, 1883, p. 12.— Hermann, Geol. Mag., dec. 3, 3, 1886, 

 p. 21. — Barrois, Ann. Soc. Geol. du Nord, 21, Lille, p. 108. — Nicholson and 

 Murie, Geol. Mag., dec. 4, 2, p. 532, fig. — Wiman, Bull. Geol. Inst. Univ. 

 Upsala, 2, pt. 2, 1896, p. 265.— Kokeu, Die Lcitfossilien, Leipzig, 1896, p. 

 328.— Roemer and Freeh, Leth. goog., Leth. Pal., 1897, p. 594.— Files, Quart. 

 Jour. Geol. Soc. London, 54, 1898, p. 483.— Zittel-Eastman Textb. Pal., 1, 

 1900, p. 118.— Files and Wood, Mon. British Grapt. Pal. Soc, 1902, p. 76.— 

 Ruedemann, Mem. New York State Mue., 7, pt. 1, 1904, p. 634. — Grabau and 

 Shinier, N. A. Index Fossils, 1, 1906, p. 28. — Ruedemann, Zittel-Eastman 

 Textb. Pal., 2d ed., 1913, p. 129. 



