426 Forty-fifth Report on the State Museum. 



Eurypterus Beecheri, Hall. 1884. 

 Second Geol. Surv. Penna. PPP., p. 30. 



* Palaeontology of New York, vol. vii, 1888, pi. 27, fig. 5. 

 Chemung group. Warren, Pennsylvania. 



Eurypterus approximates, Hall. 1888. 



(*) Palaeontology of New York, vol. vii, 1888, expl. pi. 27, fig. 6. 

 Waverly group. Near Warren, Pennsylvania. 



Genus STYLONURUS, Page. 1856. 



Stylonurus excelsior, Hall. 1883. 



Thirty-sixth Rept. N. Y. State Mus. Nat. Hist., p. 77. 



(*) Palaeontology of New York, vol. ii, 1888, pi. 26, fig. 1. 

 Catskill group. Andes, N. Y. 



(*) Palaeontology of New York, vol. vii, 1888, pi. 26a, figs. 1, 2, 3 

 (Dolichocephala JLacoana, Claypole, 1883, Proc. Amer. Philos. Soc. 

 vol. xxi, p. 236). 



Catskill group. Meshoppen, Pennsylvania. 



Stylonurus? (Echinocaris f) Wrightianus, Dawson. 



Quart. Journ. Geol. Soc. vol. xxxvii, p. 301. 



(*) Palaeontology of New York, vol. vii, 1888, pi. 27, figs. 7, 8, 9. 

 Portage group. Italy, N. Y. 



