522 BULLETIN 92, UNITED STATES NATIONAL MUSEUM. 



Eurypterus lacustris pachycheirus Continued. 



Eurypterus lacustris var. pachychtfus Clarke and Ruedemann, Mem. New York 



State Mus., 14, 1912, p. 179, pi. 12, fig. 3; pi. 19, fig. 1. 

 Cayugan (Bertie): Buffalo and Black Rock, New York. 



Eurypterus maria Clarke. 



Eurypterus maria Clarke (part) Bull. New York State Mus., 107, 1907, p. 305, 

 pi. 1, figs. 1, 2, 4; pi. 2, figs. 2, 4, 7; pi. 3, figs. 1-5, 7. Grabau and Shimer, 

 N. A. Index Fossils, 2, 1910, p. 406, figs. 1705a-c, 1713d-e. Clarke and 

 Ruedemann, Mem. New York State Mus., 14, 1912, p. 184, pis. 21, 22, fig. 37. 



Medinan (Shawangunk): Otisville, New York, and Delaware Water Gap, Penn- 

 sylvania. 



EURYPTERUS MARIA (part) Clarke. See Pterygotus (Erettopterus) globiceps and 

 Stylonurus myops. 



Eurypterus megalops Clarke and Ruedemann. 



Eurypterus megalops Clarke and Ruedemann, Mem. New York State Mus., 14, 



1912, p. 191, pi. 83, fig. 7. 



Trenton (Schenectady): Near Rotterdam Junction, Schenectady County, New 

 York. 



Eurypterus microphthalmus Hall. 



Eurypterus microphthalmus Hall, Pal. New York, 3, 1859, p. 407, pi. 80A, fig. 



7. Clarke and Ruedemann, Mem. New York State Mus., 14, 1912, p. 192, 



pi. 20, figs. 2-10. 

 Eurypterus Eriensis Whitfield, Annals New York Acad. Sci., 2, 1882, p. 196. 



Claypole, Proc. Amer. Phil. Soc., 21, 1883, p. 239. Whitfield, Geol. Surv. 



Ohio, Pal., 7, 1893, p. 416, pi. 1, figs. 31, 32; Ann. New York Acad. Sci., 5, 



1891, p. 515, pi. 5, figs. 31, 32. Grabau and Shimer, N. A. Index Fossils, 1, 



1910, p. 407, fig. 1707. Grabau, Michigan Geol. Surv., Geol. Ser., 1, 1909, 



p. 208, pi. 30, figs. 31-32. 

 Cayugan: Drift bowlder near Cazenovia; also Onondaga, Litchfield, Cherry 



Valley, and Manlius village, New York (top of Manlius); Put-in-Bay, 



Lake Erie (Put-in-Bay). 



EURYPTERUS MYOPS Clarke. See Stylonurus myops. 



EURYPTERUS PACHYCHEIRUS Hall. See Eurypterus lacustris pachycheirus. 



Eurypterus pittsfordensis Sarie. 



Eurypterus pittsfordensis Sarle, Bull. New York State Mus., 69, 1902, p. 1098, pi. 

 10, fig. 7; pi. 15, figs. 1-3; pis. 16-23;. pi. 24, figs. 2-5; pi. 25, figs. 2, 5, 6. 

 Grabau and Shimer, N. A. Index Fossils, 2, 1910, p. 407, fig. 1706. Clarke and 

 Ruedemann, Mem. New York State Mus., 14, 1912, p. 196, pi. 13, figs. 4-6; 

 pis. 14-16; pi. 17, figs. 1-6; pi. 18, figs. 3-8. 



Cayugan (Pittsford): Pittsford, Monroe County, New York. 



Eurypterus pristinus Clarke and Ruedemann. 



Eurypterus pristinus Clarke and Ruedemann, Mem. New York State Mus., 



1912, p. 207, pi. 83, figs. 5, 6. 

 Trenton (Schenectady): Dettbarn quarry, Schenectady, New York. 



Eurypterus? (Dolichopterus?) prominens Hall. 



Eurypterus prominens Hall, Proc. Amer. Assoc. Adv. Sci., 33, 1884, p. 420. 



Hall and Clarke, Pal. New York, 7, 1888, p. 157, pi. 27, figs. 3, 4. 

 Eurypterus(?) (Dolichopterus?) prominens Clarke and Ruedemann, Mem. N 



York State Mus., 14, 1912, p. 200, fig. 38. 

 Clinton sandstone: Northern part of Cayuga County, New York. 







