BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 979 



Planodema subaequata perveta Continued. 



Orthis media N. H. Winchell, 8th Ann. Rep. Nat. Hist. Surv. Minnesota, 1880, 



p. 64. 



Orthis kassubae N. H. Winchell, ibid., 1880, p. 65. 



?0rthis perveta Walcott, Mon. U. S. Geol. Surv., 8, 1884, p. 72, pi. 11, fig. 3. 

 Dalmanella perveta Hall and Clarke, Pal. New York, 8, pt. 1, 1892, pi. 5C, fig. 12. 

 Orthis (Dalmanella) subsequata var. perveta Winchell and Schuchert, Geol. 



Minnesota, 3, 1893, pi. 33, figs. 40-42. 

 Dalmanella subaequata var. pervetus Ruedemann, Bull. New York State Mus., 



49, 1902, p. 26. 

 Black River: Mineral Point, etc., Wisconsin; Minneapolis, St. Paul, Cannon 



Falls, etc., Minnesota; Decorah, Iowa; Dixon, Illinois; Tennessee. 

 Plesiotypes.Cat. No. 17235, TJ.S.N.M. 



PILOCERAS Salter. Genotype: P. invaginatum Salter. 



Piloceras Salter, Quart. Jour. Geol. Soc. London, 15, 1859, p. 376. Billings, 

 Canadian Nat. Geol., 4, 1859, p. 364; ibid., 5, 1860, p. 170. Chapman, 

 Canadian Jour., n. s., 8, 1863, p. 22; Expos. Min. Geol. Canada, 1864, p. 130. 

 Barrande, Syst. Sil. du Centre Boheme, 2, pt. 1, 1867, p. 452. Whitfield, 

 Bull. Amer. Mus. Nat. Hist., 1, 1881, p. 27, fig. 4. Hyatt, Proc. Boston Soc. 

 Nat. Hist., 22, 1884, p. 266. Zittel, Handb. Pal., 2, 1884, p. 362. Foord, 

 Geol. Mag., dec. 3, 4, 1887, pp. 541, 545; Rep. 57th Meeting British Assoc. 

 Adv. Sci., 1888, p. 717; Cat. Foss. Ceph. British Mus., 1, 1888, p. 157. Miller, 

 N. A. Geol. Pal., 1889, p. 453. Bather, Nat. Sci., 5, 1894, pp. 429, 433, fig. 5. 

 Clarke, Geol. Minnesota, 3, pt. 2, 1897, p. 769. Hyatt, Zittel-Eastman 

 Textb. Pal., 1, 1900, p. 515; 2d ed., 1913, p. 596. Ruedemann, Bull. New 

 York State Mus., 80, 1905, pp. 326, 329. Grabau and Shimer, N. A. 

 Index Fossils, 2, 1910, p. 45. 



Proteropiloceras Ruedemann, Bull. New York State Mus., 80, 1905, pp. 326, 330. 



Piloceras amplum Dawson. 



Piloceras amplum Dawson, Canadian Nat., 10, 1883, pp. 1-4, figs. 1, 2. Foord, 

 Geol. Mag., dec. 3, 4, 1887, p. 543, fig. 2, p. 544; Cat. Foss. Ceph. British 

 Mus., 1, 1888, p. 159, fig. Ruedemann, Bull. New York State Mus., 80, 

 1905, p. 329, fig. 21. 

 Canadian (Beekmantown) : Lachute, Canada. 



Piloceras canadense Billings. 



Piloceras Canadense Billings, Canadian Nat. Geol., 5, 1860, p. 171, fig. 16; Pal. 

 Foss., 1, Geol. Surv.. Canada, 1865, p. 256. Foord, Cat. Foss. Ceph. British 

 Mus., 1, 1888, p. 162. 



Canadian: Mingan Islands; Cape Norman and Port Aux Choix, Newfoundland 

 (Quebec, F-H). 



Piloceras corniculum Sardeson. 



Piloceras corniculum Sardeson, Bull. Minnesota Acad. Nat. Sci., 4, 1896, p. 103, 



pi. 6, figs. 5-7. 

 Ozarkian (Oneota): Near Dresbach, Winona County, Minnesota. 



Piloceras explanator Whitfield. 



Piloceras explanator Whitfield, Bull. Amer. Mus. Nat. Hist., 1, 1886, p. 323, 

 pi. 28, figs. 1-4. Foord, Cat. Foss. Ceph. British Mus., pt. 1, 1888, p. 162. 

 Lesley, Geol. Surv. Pennsylvania, Rep. P 4, 1889, p. 650, figs. Clarke, Geol. 

 Minnesota, 3, 1897, p. 769, pi. 2. Ruedemann, Bull. New York State Mus., 

 80, 1905, p. 329, pi. 10-13, pi. 9, fig. 3; ibid., 90, 1906, p. 429, pi. 10, 11. 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 45, fig. 1243. Seely, 

 Vermont State Geol., Rep. 7, 1910, pi. 57, fig. 11. 



Canadian (Beekmantown): Fort Cassin, Vermont, and Valcour, New York. 



