BIBLIOGRAPHIC LIST OF GENEEA AND SPECIES. 525 



Eurystomltes robertsonl (Hall). 



Lituites robertsoni Hall, Rep. Geol. Surv. Wisconsin, 1861, p. 38. — ^Whitfield, 



Mem. Amer. Mus. Nat. Hist., 1, pt. 2, 1895, p. 64, pi. 10, figs. 4-6. 

 Eurystomites robertsoni Miller, N. A. Geol. Pal., 2d App., 1897, p. 773 (gen. ref.). 

 Black River (Platteville): Beloit, Wisconsin; Rockford, Illinois. 



Eurystomites rotundus Hyatt. 



Nautilus kelloggi Whitfield (part). Bull. Amer. Mus. Nat. Hist., 1, 1886, p. 328, 



pi. 31, figs. 4, 5.— Seely, Vermont State Geol. Rep., 7, 1910, pi. 53, figs. 4, 5. 

 Eurystomites rotundus Hyatt, Amer. Phil. Soc. Proc, 32, 1894, p. 443, pi. 5, figa. 



21-25.— Ruedemann, Bull. New York State Mus., 90 1906, p. 463. 

 Canadian (Beek man town): Fort Cassin, Vermont. 

 Cotypes.— Cat. No. 25655, U.S.N.M. 



Eurystomites undatus Hyatt. See Plectoceras? undatum. 



Eurystomites undatus var. occidentalis Clarke. See Plectoceras undatum 

 occidentale. 



Eurystomites virginianus Hyatt. 



Eurystomites virginiana Hyatt, Amer. Phil. Soc. Proc, 32, 1894, p. 444. — Ruede- 

 mann, Bull. New York State Mus., 90, 1906, p. 463.— Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 69. 



Canadian (Beekmantown) : Near Lexington, Virginia; Fort Cassin, Vermont. 



Eolotype.— Cat. No. 9611, U.S.N.M. 



EUSARCUS Grote and Pitt. Genotype: E. scorpionis Grote and Pitt. 



Eusarcus Grote and Pitt, Bull. Buffalo Soc. Nat. Sci., 3, 1875, pp. 1, 2.— Pohlman, 

 Bull. Buffalo Soc. Nat. Sci., 5, 1886, p. 29.— Claypole, Amer. Geol., 13, 1894, 

 p. 78, footnote.— Clarke, Zittel-Eastman Textb. Pal., 1, 1900, p. 676; ibid., 

 2d ed., 1913, p. 783.— Grabau, Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 230; 

 Bull. New York State Mus., 45, p. 230.— Grabau and Shimer, N. A. Index 

 Fossils, 2, 1910, p. 409. — Clarke and Ruedemann, Mem. New York State Mus. 

 14, 1912, p. 226. 

 Eurysoma Claypole, Amer. Geol., 6, p. 258. (Genotype, E. newlini Claypole.) 

 Carcinosoma (Eurysoma preoccupied) Claypole, Amer. Geol., 13, 1894, p. 78. — 

 Miller, N. A. Geol. Pal., 1st App. 1892, p. 706. 



Eusarcus(?) cicerops (Clarke). 



EurypteruB? cicerops Clarke, Bull. New York State Mus., 107, 1907, p. 307, pi. 



5, fig. 10; pi. 5, fig. 7. 

 Eu8arcu8(?) cicerops Clarke and Ruedemann, Mem. New York State Mus., 14, 



1912, p. 253, pi. 80, figs. 2-10. 

 Medinan (Shawangunk): Otisville, New York. 



Eusarcus grandis Grote and Pitt. See Eusarcus scorpionis. 



Eusarcus lingulatus Clarke and Ruedemann. 



Eusarcus lingulatus Clarke and Ruedemann, Mem. New York State Mus., 14, 



1912, p. 413, figs. 96, 97. 

 Chazyan (Normanskill) : Catskill, New York. 



Eusarcus longiceps Clarke and Ruedemann. 



Eusai'cus longiceps Clarke and Ruedemann, Mem. New York State Mus., 14, 



1912, p. 257, pi. 84, figs. 1-6. 

 Trenton (Schenectady): Schenectady, New York. 



