PHYLLOPODA. 69 



Stylonurus ensiformis, H. Woodw. 1864. Old Red Sandstone, 



Forfarshire. 

 Stylonurus cusiformis, H. Woodw. 1864, Geol. Mag. vol. i. pp. 198, 199, with 

 hgiire ; id. 1872, Mon. Pal. Soc. Merostomata, p. 120, pi. xxi. fig. 5. 



Stylonurus Logani, H. Woodw. 1864. U. Ludlow, Logan Water, 



Lesmahagow, Lanarkshire. 

 Stylonurus spinipes, Page, 1859, Advanced Text-book, 2nd edit. p. 181. fig. 1 



(no description). 

 S. Logani, H. Woodw. 1864, Geol. Mag. vol.i. p. 197, pi. x. fig. 1 ; id. 1872, 

 Mon. Pal. Soc. Merostomata, p. 129, pi. xxiv. fig. 1, and woodcut. 



Stylonurus megalops, Salter, sp., ] 859. Old Red Sandstone, Ludlow. 



Eurypterus megalops, Salter, 1859, Quart. Journ. Geol. Soc. vol. xv. p. 233, 



pi. X. figs. 9-14. 

 Stylonurus megalops, H. Woodw. 1865, op. cit. vol. xxi. p. 486 ; id. 1872, Mon. 



Pal. Soc. Merostomata, p. 124, pi. xxi. figs. 3, 3«. 



Stylonurus Powriei, Page, 1855. Old Red Sandstone, Pitscandly, 



Forfarshire ; U. Silurian, Lesmahagow. 

 Stylonurus, sp., Page, 1855, Brit. Assoc. Report, Glasgow, p. 89. 

 S. I'owriensis, Page, 1856, Advanced Text-book of Geology, p. 135, fig. 2. 

 S. Powriei, Page, 1859, op. cit. 2nd ed. p. 181, fig. 3 ; H. Woodw. 1864, Brit. 

 Assoc. Report, Bath, p. 73; id. 18G5, Quart. Journ. Geol. Soc. vol. xxi. 

 p. 482, pi. xii. fig. 1 ; id. 1872, Mon. Pal. Soc. Merostomata, p. 122, pi. xxi. 

 fig. 1 (and fig. 2?). 



Stylonurus Scoticus, H. Woodw. 1864. Old Red Sandstone, Forfar. 



Stylonu7-us Scoticus, IT. Woodw. 1864, Brit. Assoc. Report, Bath, p. 73 ; 

 id. 1805, Quart. .lourn. Geol. Soc. vol. xxi. p. 484, pi. xiii. figs. 2, 3 ; id. 1872, 

 Mon. Pal. Soc. Merostomata, p. 120, pis. xxii. & xxiii. 



Stylonurus Symondsii, Salter, sp., 1857. Cornstones of Rowlestone, 



Brecknockshii'e. 

 Eurypterus Syynondsii, Salter, 1857, Edinb. New Phil. Jouru. new series, 

 vol. vi. pi. 257 ; id. 1859, in Murchison's Siluria, 3rd. edit. p. 274, woodcut 

 (fossils 68) : id. 1859, Quart. Journ. Geol. Soc. vol. xv. p. 230, pi. x. fig. 1. 

 Stylonurus Symondsii, II. Woodw. 1865, Quart. Journ. Geol. Soc. vol. xxi. 

 p. 486, pi. xiii. fig. 4 ; Murchison's Siluria, 1867, 4th edit. p. 246. fossils 

 (09) ; 11. Woodw. 1872, Mon. Pal. Soc. Merostomata, p. 124, pi. xxi. fig. 4. 



Order VIII. PHYLLOPODA. 



APTYCHOPSIS, H. Woodw. 1872. 



Aptychopsis, II. Woodw. 1872, Geol. Mag. vol. ix. p. 504; id. 1873, 

 Brit. As-^oe. Rep. Brighton, 1872; J. Armstrong & others, "Catalogue 

 of the Western bcottish Fossils," Glasgow, 1870, p. 7. 

 Distribution. Middle Silurian. 



Aptychopsis glabra, H. Woodw. 1872. Middle Silurian, near Hawick. 



Ajifyc/iopsis glabrn, II. Woodw. 1872, Geol. Mag. vol. ix. p. 565 ; id. 1873, 

 I?rit. .\ssoc. Kep. Brighton. l-*72. 



