BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 437 



DIKELOCEPHALUS EATONi Whitfield. See Platycolpus eatoni. 

 DIKELOCEPHALUS HARTii Walcott (1909). See Saukia stosei. 



Dikelocephalus hartti (Walcott). 



Conocephalites Hartti Walcott, 32d Rep. New York State Mus. Nat. Hist., 1880, 



p. 130. 

 Dicellocephalus hartti Walcott, Bull. U. S. Geol. Siirv., 30, 1886, p. 21. Lesley, 



Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 199, figs. Walcott, Smiths. 



Misc. Coll., 57, 1912, p. 273, pi. 44, figs. l-7a. 

 Dikelocephalus hartti Walcott, Smiths. Misc. Coll., 57, No. 13, 1914, p. 368, pi. 63, 



figs. 1-7, 7a. 

 Ozarkian or Upper Cambrian: Near Saratoga Springs (Hoyt), and near Cha- 



teaugay, New York (top of Potsdam). 

 Cotypes. Cat. Nos. 58571-58577, U.S.N.M. 



DIKELOCEPHALUS HISINGERI Billings. See Lisania? hisingeri. 

 DIKELOCEPHALUS MAGNIFICUS Billings. See Hungaia magnifica. 

 DIKELOCEPHALUS MEGALOPS Billings. See Conokephalina megalops. 



Dikelocephalus? missisquoi Billings. 



Dikelocephalus Missisquoi Billings, Pal. Foss., Geol. Surv. Canada, 1865, p. 199. 

 Canadian (Beekmantown): Philipsburg, Quebec. 



DIKELOCEPHALUS NEWTONENSIS Weller. See Calvinella newtonensis. 

 DIKELOCEPHALUS OWENI Billings. See Anomocarella? oweni. 

 DIKELOCEPHALUS PAUPER Billings. See Ptychoparia? pauper. 

 DIKELOCEPHALUS PLANIPRONS Billings. See Anomocarella? planifrons. 

 DIKELOCEPHALUS SELECTUS Billings. See Ptychaspis? selectus. 

 DIKELOCEPHALUS SESOSTRIS Billings. See Ptychaspis sesostris. 



Dikelocephalus tribulis (Walcott). 



Dicellocephalus tribulis Walcott, Smiths. Misc. Coll., 57, 1912, p. 274, pi. 44, figs. 



8,8a. 

 Dikelocephalus tribulis Walcott, Smiths. Misc. Coll., 57, 1914, p. 372, pi. 63, figs. 



8-10, lOa. 



Ozarkian or Upper Cambrian (Hoyt): Near Saratoga Springs, New York. 

 Holotype.Czt. No. 58578, U.S.N.M. 



DILOBELLA Ulrich. Genotype: D. typa Ulrich. 



Dilobella Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 672. Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 347. 



Dilobella typa Ulrich. 



Dilobella typa Ulrich, Geol. Minnesota, 3, pt. 2, 1894, p. 673, pi. 46, figs. 30-34. 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 348, fig. 1658s, s', t. 

 Bassler, Zittel-Eastman Textb. Pal., 1913, p. 738, fig. 1425p. 



Bollia typa Miller, N. A. Geol. Pal., 2d App., 1897, p. 787 (gen. ref.). 



Black River (Decorah): St. Paul and Cannon Falls, Minnesota. 



Cotypes Cat. No. 41641, U.S.N.M. 



DIMEROCRINITES Phillips. See Dimerocrinus Phillips. 



