Note 230 — Chapter XI · ARACHNIDA (CONTINUED)—DELOBRANCHIATA = MEROSTOMATA (CONTINUED)—EURYPTERIDA

A detailed account of Eurypterus fischeri has been given by G. Holm, Mém. Acad. Impér. Sci. St. Pétersbourg (8), viii. 2, 1898. See also F. Schmidt, ibid. (7), xxxi. 5, 1883. Descriptions of American forms of Eurypterus are given by Hall, “Nat. Hist. New York,” Palaeont. iii., 1859, p. 395; ibid. vii., 1888, p, 156; and Second Geol. Survey Pennsylvania, “Report of Progress,” PPP., 1884; Whiteaves, Geol. and Nat. Hist. Surv. Canada, “Palaeozoic Foss.,” iii., 1884, p. 42.