BIBLIOCiRAPITTC LIST OF GENERA AND SPECIES. 143 



Bumastus iiiagarensis — Contiuued. 



Bumastus niagarensis Tirabau and Shimer, N. A. Index Fossils, 2, 1910, p. 298. 

 Illaenus madisonianus Whitfield, Geol. Wisconsin, 4, 1882, p. 307, pi. 20, figs. 8, 



9.— Chamberlin, Geol. Wisconsin, 1, 1883, p. 195, fig.— Foerste, Bull. Sci. 



Lab. Denison Univ., 1, 1885, p. 106, pi. 14, figs, la, lb, 2a-2b; 2, 1887, p. 93, 



pi. 8, figs. 8-10; Geol. Surv. Ohio, Pal., 7, 1893, p. 526, pi. 27, figs. 7-10.— 



Van Ingen, School of Mines Quart., 23, 1901, p. 35. 

 Illsenus madisonianus vars. elongatus and depressus Foerste, Geol. Surv. Ohio, 7, 



1893, p. 526, pi. 26, figs. 1, 2; pi. 27, figs. 7-10. 

 Niagaran: Wisconsin and Illinois (Racine); St. Clair Springs, Arkansas (St. Clair); 



Dayton, Ohio (Brassfield). 



Bumastus orbicaudatus (Billings). 



Illsenus orbicauda Billings, Canadian Nat., 4, 1859, p. 379. 



Illsenus orbicaudatus Billings, Cat. Sil. Foss. Anticosti, Geol. Surv. Canada, 1866, 



p. 27, fig. 10; p. 60.— Salter, Mon. Brit. Tril., Pal. Soc, 1867, p. 209. 

 Richmond-Anticostian (English Head, Gun River) : English Head, Gamache Bay, 



etc., Anticosti. 



Bumastus orbicaudatus Clarke. See Bumastus billingsi. 



Bumastus transversalis Weller. 



Bumastus transversalis Weller, Geol. Surv. New Jersey, Pal., 3, 1903, p. 195, pi. 



14, fig. 14. 

 Trenton: Hainesbiu-g, New Jersey. 



Bumastus trentonensis Emmons. 



Bumastus trentonensis Emmons, Nat. Hist. New York, Geol. , 2, 1842, p. 390, fig. 1. 

 Illsenus trentonensis Hall, Pal. New York, 1, 1847, p. 230, pi. 69, fig. 5. 

 Trenton (drift): Hogansburg, New York. 



Observation. — Type lost and figures not sufficient for accurate identification. 

 See Raymond and Narraway (Annals Carnegie Mus., 4, 1908, p. 251) for a dis- 

 cussian of this and related forms. 



BUTHOGRAPTUS Hall. Genotype: B. laxusHall. 



Buthograptus Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 18; 20th Rep. 

 New York State Cab. Hist., 1868, p. 218; rev. ed., 1870, p. 252.— Nicholscm, 

 Mon. Brit. Grapt., 1872, p. 131.— Spencer, Trans. Acad. Sci. St. Louis, 4, 

 1884, p. 563.— Whitfield, Bull. Amer. Mus. Nat. Hist., 6, 1894, p. 351 (Bytho- 

 cladus, new name, suggested). 



Bythograptus Miller, N. A. Geol. Pal., 1889, p. 174. 



Buthograptus laxus Hall. 



Buthograptus laxus Hall, Rep. Sup. Geol. Surv. Wisconsin, 1861, p. 19; Geol. 

 Surv. Canada, dec. 2, 1865, p. 18, fig. 25; 20th Rep. New York State Cab. 

 Nat. Hist., 1868, p. 185, fig. 27; rev. ed., 1870, p. 214, fig. 27.— Nicholson, 

 Mon. Brit. Graptol., 1872, p. 132, fig. 72.— Chamberlin, Geol. Wisconsin, 1, 

 1883, p. 153, fig.— Wliitfield, Bull. Amer. Mus. Nat. Hist., 6, 1894, p. 351, pi. 

 11, figs. 1-3; Mem. Amer. Mus. Nat. Hist., 1, pt. 2, 1895, p. 40, pi. 4. figa 1-3. 



Black River (Platteville): Platteville, etc., Wisconsin. 



BUTHOTREPHIS Hall. Genotype: B. antiquata Hall. 



Buthntrephis Hall, Pal. New York, 1, 1847, p. 8.— Billings, Pal. Foss., 1, Geol. 

 Surv. Canada, 1865, p. 99.— Nathorst, Ofvers K. Vet.-Akad. Forhandl., 30, 

 No. 9, 1873, p. 46.— James, Jour. Cincinnati Soc. Nat. Hist.. 7, 1885, p. 159. 



Bythotrephis Roemer, Leth. geog., 1, Theil, Leth. Pal., Erste Leif, 1880, p. 123.— 

 Whiteaves, Pal. Foss., Geol. Surv. Canada, 3, pt. 3, 1897, p. 139.— Grabau, 

 Bull. New York State Mus., 45, 1901, p. 130; Bull. Buffalo Soc. Nat. Sci., 

 7, 1901, p. 130.— Miller, N. A. Geol. Pal., 1889, p. 109. 



