278 Dr. H. Woodward—Eurypterus in the Coal-Measures. 
FE. Scoulert of Hibbert,1 from a quarry at Kirkton, near Bathgate, 
West Lothian, in a fresh-water limestone containing much silica and 
associated with fronds of Sphenopteris Hibberti.2 The first to be 
described in America was Hurypterus (Anthraconectes) Mazonensis, by 
Messrs. Meek & Worthen, from the Coal-measures of Grundy County, 
Illinois. The next was in 1877, by Mr. Charles EK. Hall, of the 
Geological Survey of Pennsylvania,* under the name of #. Penn- 
sylvanicus, from the Lower Carboniferous rocks of Venango County, 
and another example from the Coal-measures of Cannelton, Pa., under 
the name of urypterus (Dolichopterus) Mansfieldi. These were 
noticed and refigured by Professor James Hall,’ who added figures 
of Eurypteride from the Lower productive Coal-measures in Beaver 
Co. and the Lower Carboniferous Pithole Shale, Vernango Co. The 
additional species, noticed by Professor James Hall, were /. Beechert, 
Hall (an Upper Devonian form from Warren, Pa.); #. potens, Hall, 
Carboniferous, Pa.; 2. stylus, Hall, shale below Cannel Coal, Darling- 
ton, Pa. 
A very interesting and well-preserved Lurypterus, named L. scabrosus, 
was discovered in 1886 in the Lower Carboniferous Series of Eskdale, 
Scotland, and figured and described in 1887.6 Part of the body of 
another example, named #. IWalsoni, from the Coal-measures of 
Radstock, Somerset, was also figured and described by the writer.’ 
Other remains of Hurypterus have been referred to £. Scoulerv® from 
the Carboniferous of Cape Breton. Another species, not determined, 
was noticed by Salter from the Carboniferous of Nova Scotia. A form 
doubtfully referred to #. Scouleri from the Upper Devonian of 
Kiltorcan, Ireland, and one named by Salter £. pulicaris,® from the 
Devonian of St. John’s, New Brunswick; one from the Lower 
Devonian of Arbroath, #. Brewsteri°; one from the Passage Beds, 
Purton, Herefordshire, named £. Brodiet, H. Woodward, complete 
the Carboniferous and Devonian series. 
In the Upper Silurian no fewer than 17 species of Hurypterus 
have been described, 10 being from Russia and North America, and 
7 from Ludlow, Kendal, and Lanarkshire; the most perfectly 
preserved, however, are from North America, and from the Island 
of Oesel in the Baltic. The dermal coverings of some of these 
' Trans. Roy. Soc. Kdin., vol. xii (1836), pt. 1, p. 280, pl. xu. 
2 H. Woodward: Mon. Pal. Soc. Merostomata, 1872, pp. 133, 180, pls. xxv—xxvil 
and text-figs. 
3 See Amer. Journ. Science, vol. xlvi (1868), p. 21; afterwards more fully 
illustrated and described by the same authors in the Reports Geol. Sury. Illinois, 
vol. ii (1868), p..544. 
+ Proc. Amer. Phil. Soc., vol. vii (1877), p. 621. 
> Second Geol. Surv. Pennsylvania: Report of Progress P.P.P., 1884. 
6 H. Woodward: Grou. Mac., 1887, pp. 481-484, Pl. XIII. 
7 Grou. Mac., 1888, pp. 419-421, Woodcut. 
8 J. W. Salter: Quart. Journ. Geol. Soc., vol. xv (1859), p. 232, pl. x. 
9 J. W. Salter: Quart. Journ. Geol. Soc., vol. xviii (1863), p. 346; vol. xix, 
. 18-79. 
a H. Woodward: Grou. Maa., Vol. I (1864), p. 200, Pl. X, Fig. 3. 
1 Fr. Schmidt, ‘‘ Die Crustaceentauna der Kurypteren-schichten von Rootzikull 
auf Oesel. Miscellanea silurica, iii”: Mém. Acad. Imp. Sci. St. Pétersbourg 
(viz), vol. xxxi, No. 5, 1883. 
