BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 1007 



Pleurocystites squamosus Billings. 



Pleurocystites squamosus Billings, Canadian Jour., 2, 1854, p. 251, figs. 9-12; Geol. 

 Surv. Canada, Rep. Progr. for 1853-1856, 1857, p. 286; Geol. Surv. Canada, 

 dec. 3, 1858, p. 49, pi. 1, figs. la-d. — Chapman, Expos. Min. Geol. Canada, 

 1864, p. 109— Roemer, Leth. geog., 1, Leth. Pal., Atlas, 1876, pi. 11, fig. 6 — 

 Zittel, Handb. Pal., 1, Munich, 1879, p. 422, fig. 298.— Chamberlin, Geol. 

 Wisconsin, 1, 1883, p. 154, fig.— Miller, N. A. Geol. Pal., 1889, p. 272, fig. 399.— 

 Jaekel, Stammes. Pelmat., 1, Thecoidea u. Cystoidea, Berlin, 1899, p. 234. — 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 465, fig. 1774. 



Pleurocystis squamosa Haeckel, Amph. und Cyst., 1, 1896, pp. 37, 44. — Springer, 

 Mem. Geol. Surv. Canada, 15P, 1911, p. 45 (loc. occ). — Bather, Trans. Roy. 

 Soc. Edinburgh, 49, pt. 2, 1913, p. 464, figs. 63-65. 



Trenton (Curdsville): Ottawa and Kirkfield, Ontario. 



Pleurocystites squamosus robustus (Billings). 



Pleurocystites robustus Billings, Canadian Jour., 2, 1854, p. 252, fig. 15; Geol. 



Surv. Canada, Rep. Progr. for 1S53-1856, 1857, p. 287; Geol. Surv. Canada, 



dec. 3, 1858, p. 49, pi. 1, fig. 2a; Ann. Mag. Nat. Hist., 4th ser., 5, 1870, p. 



260; Pal. Foss. Geol. Surv. Canada, 2, pt. 1, 1874, p. 98.— Jaekel,. Stammes. 



Pelmat., 1899, p. 234. 

 Pleurocystis robustus Springer, Geol. Surv. Canada, Mem. 15P, 1911, p. 45 



(loc. occ). 

 Pleurocystis squamosa var. robusta Bather, Trans. Roy. Soc. Edinburgh, 49, 



pt. 2, 1913, p. 465, fig. 66. 

 Trenton (Curdsville): Ottawa and Kirkfield, Ontario. 



Pleurograpsus Nicholson. See Pleurograptus Nicholson. 



PLEUROGRAPTUS Nicholson. Genotype: Cladograpsus linearis Carruthers. 



Pleurograpsus Nicholson, Geol. Mag., 4, 1867, p. 257; Quart. Jour. Geol. Soc. Lon- 

 don, 24, 1868, p. 9; Trans. Edinburgh Geol. Soc, 1, 1868, p. 58; Mon. British 

 Grapt., 1872, p. 110. 



Pleurograptus Zittel, Handb. Pal., 1, 1879, p. 298.— Tullberg, Sveriges Geol. 

 Unders. Ser. C, No. 55, 1883, pp. 12, 14.— Hermann, Geol. Mag., dec. 3, 3, 

 1886, p. 18.— Wiman, Bull. Geol. Inst. Univ. Upsala, 2, pt. 2, 1896, p. 266.— 

 Koken, Die Leitfossilien, Leipzig, 1896, p. 328. — Roemer and Freeh, Leth. 

 geog., 1, Theil, Leth. Pal., 1, 3 Lief., 1897, p. 586.— Elles and Wood, Mon. 

 British Grapt. Pal. Soc, 1903, p. 119. — Ruedemann, Mem. New York State 

 Mus.,11, pt.2, 1908, p. 268. 



Pleurograptus linearis (Carruthers). 



Cladograpsus linearis Carruthers, Trans. Roy. Phys. Soc. Edinburgh, 1858, p. 



467, fig. 1; Ann. Mag. Nat. Hist., 3d Ber., 3, 1859, p. 24, fig. 3. 

 Cladograptus linearis Hall, 20th Rep. New York State Cab. Nat. Hist., 1868, p. 235, 



fig.; rev. ed., p. 270, fig. 

 Dendrograpsus linearis Carruthers, Geol. Mag., 4, 1867, p. 70. 

 Pleurograpsus linearis Nicholson, Geol. Mag., 4, 1867, p. 257, pi. 15, figs. 1-5. 

 Pleurograptus linearis Lapworth, Cat. West. Scotland Foss., 1876, p. 5, pi. 3, fig. 



69.— Clark, Geol. Mag., 4th ser., 9, 1902, p. 498.— Ellea and Wood, Mon. 



British Grapt., pt. 3, 1903, p. 119, pi. 14, fig. 7; pi. 17, fig. 1.— Olin, Kongl. 



Fysiogr. Sallsk. Handl. N. F., 17, 1906.— Ruedemann, Mem. New York 



State Mus., 11, pt. 2, 1908, p. 269, pi. 15, fig. 1, text fig. 186. 

 Ccenograptus (Pleurograptus) linearis Roemer and Freeh, Leth. Pal., 1, 1897, p. 



586, fig. 158. 

 Ordovician: Scotland (Hartfell); Holland Patent, New York (Utica). 



