BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1067 



Pterygometopus microps (Green). 



Calymene microps Green, Mon. Trilobites North Amer., Philadelphia, 1832, p. 34. 

 Maysville(?): Near Ripley, Ohio. 



Pterygometopus saltaensis Kayser. 



Pterygometopus saltaensis Kayser, Zeits. d. d. Geol. Gesell., 50, 1898, p. 428, 



pi. 16, fig. 4. 

 Middle Ordovieian: Salte, Argentina. 



Pterygometopus schmidtl Clarke. 



Pterygometopus schmidti Clarke, Geol. Minnesota, 3, pt. 2, 1894, p. 729, fig. 50; 

 p. 732. N 



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



Black River (Platteville) and Trenton (Prosser): Minneapolis, Kenyon, and Can- 

 non Falls, Minnesota. 



Pterygometopus troosti (Safford). 



Dalmanites troosti Safford, Geol. Tennessee, 1869, p. 290 (nom. nud.).— Clarke, 



Geol. Minnesota, 3, pt. 2, 1894, p. 732, footnote. 

 Chasmops Troosti Safford and Vogdes, Proc. Acad. Nat. Sci. Philadelphia, 1889, 



p. 167, fig. 

 Stones River: Murfreesboro, Tennessee. 



PTERYGOTUS Agassiz. Genotype: P. problematicus Agassiz. 



Pterygotus Pictet, Traite de Pal., 2d ed., 2, 1854, p. 538.— Page, Rep. 25th Meeting 

 British Assoc. Adv. Sci., Notes, Abstracts, 1856, p. 89.— Hall, Pal. New York, 

 3, 1859, pp. 416, 424, fig.— Woodward, Mon. British Foss. Crust., Palseonto- 

 graphical Soc, 1866, p. 33; Quart. Jour. Geol. Soc. London, 24, 1868, p. 294 — 

 Barrande, Syst. Sil. du Centre Boheme, 1, Suppl., 1872, p. 556.— Alth, 

 Abhandl. der K.-K. Geol. Rcichsanstalt, 7, Heft 1, 1874, p. 53.— Schmidt, 

 Mem. Acad. Imp. Sci. St. Petersburg, 7th ser., 31, No. 5, 1883, p. 64.— Zittel, 

 Handb. Pal., 2, 1885, p. 652.— Miller, N. A. Geol. Pal., 1889, p. 564.— Vogdes, 

 Annals New York Acad. Sci., 5, 1889, p. 31, 32, fig— Laurie, Nat. Sci., 3, 

 1893, p. 124; Trans. Royal Soc. Edinburgh, 37, 1893, p. 515; Nat. Sci., 2, 

 1893, p. 124.— Grabau, Bull. New York State Mus., 45, 1901, p. 231.— Clarke, 

 54th Rep. New York State Mus., 1901, p. 83.— Grabau, Bull. Buffalo Soc. 

 Nat. Sci., 7, 1901, p. 231.— Grabau and Shimer, N. A. Index Fossils, 2, 1910, 

 p. 411.— Clarke and Ruedemann, Mem. New York State Mus., 14, 1912, 

 p. 348.— Clarke, Zittel-Eastman Textb. Pal., 1900, p. 677; 2d ed., 1913, 

 p. 784. 



Pterygotus acuticaudatus Pohlman. See Pterygotus buffaloensis. 



Pterygotus bilobus Pohlman. Sec Pterygotus buffaloensis. 



Pterygotus buffaloensis Pohlman. 



Pterygotus Buffaloensis Pohlman, Bull. Buffalo Soc. Nat. Sci., 4, 1881, p. 17, 

 figs. 1-3; ibid., 5, p. 24, 1886, pi. 3, fig. 1.— Laurie, Trans. Royal Soc. Edin- 

 burgh, 37, pt. 2, 1893, pp. 515, 517.— Semper, Beitr. Pal. Geol. Oester.-Ung., 

 11, 1898, p. 74.— Clarke, Zittel-Eastman Textb. Pal., 1, pt. 2, 1900, p. 678, 

 fig. 1425.— Seeman, Beitr. Pal. Geol. Oesterr.-TJng., Orients, 19, 1906, p. 51 — 

 Clarke and Ruedemann, Mem. New York State Mus., 14, 1912, p. 358, pi. 57, 

 fig. 3; pis. 67, 68, 72-80, figs. 72-78. 

 Pterygotus cummingsi Grote and Pitt, Bull. Buffalo Soc. Nat. Sci., 3, 1875, p. 18, 

 fig. 1. 

 84243°— Bull. 92— vol 2—15 23 



