1068 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Pterygotus buffaloensis — Continued. 



Pterygotus sp. (cummingsi?) Pohlman, ibid., 4, 1881, p. 18, fig. 4. 

 Pterygotus acuticaudatus Pohlman, ibid., 4, 1881, p. 42, pi. 2, fig. 3. 

 Pterygotus quadraticaudatus Pohlman, ibid., 4, 1881, p. 43, pi. 3, fig. 1. 

 Pterygotus? sp. Pohlman, ibid., 4, 1881, p. 44, pi. 3, fig. 2. 

 Pterygotus macrophthalmus? Pohlman, ibid., 4, 1881, p. 44. 

 Pterygotus bilobus Pohlman, ibid., 5, 1886, p. 27. 

 Cayugan (Bertie): Near Buffalo, New York. 

 Plesiotype.— Cat. No. 60053, U.S.N.M. 



Pterygotus canadensis Dawson. 



Pterygotus Canadensis Dawson, Canadian Nat., n. s., 9, 1879, p. 103, figs. 1, 2. 

 Niagaran dolomite: Hamilton, Ontario. 



Pterygotus cobbl Hall. 



Pterygotus cobbi Hall, Pal. New York, 3, 1859, p. 417, pi. 83B, fig. 4; pi. 84, 

 fig. 8.— Grote and Pitt, Proc. Amer. Assoc. Adv. Sci., 26, 1878, p. 300, 301, 

 fig. 1.— Grabau, Bull. New York State Mus., 45, 1901, p. 231; Bull. Buffalo 

 Soc. Nat. Sci., 7, 1901, p. 231.— Semper, Beitr. Pal. Geol. Oestr.-Ung., 

 Orients, 11, 1898, p. 80. — Clarke and Ruedemann, Mem. New York State 

 Mus., 14, 1912, p. 371, pi. 77, fig. 6. 



Pterygotus cummingsi Grote and Pitt, Proc. Amer. Assoc. Adv. Sci., 26, 1877, 

 p. 300, 301, fig. 



Cayugan (Bertie): Near Buffalo, New York. 



Pterygotus cobbi juvenis Clarke and Ruedemann. 



Pterygotus cobbi var. juvenis Clarke and Ruedemann, Mem. New York State 



Mus., 14, 1912, p. 429, figs. 119-121. 

 Cayugan (Bertie): Litchfield, Herkimer County, New York. 



Pterygotus cummingsi Grote and Pitt. See Pterygotus buffaloensis and P. cobbi. 



Pterygotus globicaudatus Pohlman. See Eurypterus pustulosus. 



Pterygotus (Erettopterus) globiceps Clarke and Ruedemann. 



Eurypterus maria (in part) Clarke, Bull. New York State Mus., 107, 1907, pi. 2, 



fig. 3. 

 Pterygotus (Erettopterus) globiceps Clarke and Ruedemann, Mem. New York 



State Mus., 14, 1912, p. 374, pi. 82, figs. 1-12. 

 Medinan (Shawangunk) : Otisville, New York, and probably Delaware Water 



Gap, Pennsylvania. 



Pterygotus (Erettopterus) grandis (Pohlman). 



Ceratiocaris grandis Pohlman, Bull. Buffalo Soc. Nat. Sci., 4, 1881, p. 19, fig. 5. — 



Jones, Rep. 59th Meeting Brit. Assoc. Adv. Sci., 1890, p. 65. 

 Pterygotus (Erettopterus) grandis Clarke and Ruedemann, Mem. New York State 



Mus., 14, 1912, p. 379, pi. 81, fig. 80. 

 Cayugan (Bertie): Buffalo, New York. 



Pterygotus macrophthalmus? Pohlman. See Pterygotus buffaloensig. 



Pterygotus macrophthalmus Hall. 



Pterygotus macrophthalmus Hall, Pal. New York, 3, 1859, p. 418, pi. 80A, figs. 

 6, 8, 8a.— Grabau, Bull. Buffalo Soc. Nat. Sci., 7, 1901, p. 231; Bull. New York 

 State Mus., 45, 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,350; pi. 69, figs. 2-7; pi. 70, figs. 1, 2; pi. 71. 



