148 BRITISH FOSSIL CRUSTACEA. 



Locality. — The Upper Ludlow Rock of Ludlow, and the Downton Sandstone of 

 Kington, Herefordshire. 



Species 6.— EURYPTERUS ABBREVIATUS :— Salter. PL XXVIII, fig. 14. 



Eurypterus abbreviatus, Salter. Quart. Journ. Geol. Soc, 1859, vol. xv, p. 234, 



pi. x, fig. 18. 



Mr. Salter characterises this as "A thoroughly distinct species, yet with very similar 

 characters to those of E. acuminatus, as if the telson of that species had been greatly 

 abbreviated. 



" Telson broadly trigonal at base, forming a nearly equilateral triangle, of which the 

 smooth thickened base forms one angle ; the sides expand with a curved outline for about 

 half the length of the joint, then suddenly contract and form a narrow, acuminate, 

 serrated point. 



' We have only the under surface ; the upper was probably keeled ; the lower shows 

 a faint longitudinal elevation proceeding from the thick base to the point. The serrse on 

 the edge are very prominent. Length J- inch, width ^ inch. 



" Locality. — Downton Sandstone of Kington, Herefordshire." 



Species 7.— EURYPTERUS HIBERNICUS :— Baily, sp. PL XXVIII, 



figs. 16, 17 and 17 a. 



Eurypterus Scouleri (?), Salter. Quart. Journ. Geol. Soc, 18.59, vol. xv, p. 232, 



pi. x, figs. 2 and 3. 

 Pterygotus Hibernicus, Baily. Brit. Assoc. Report, Section C, Exeter, 1869, p. 75. 



In Mr. Salter's paper " On some new species of Eurypterus, &c," communicated to 

 the Geological Society, June 23rd, 1858, he notices certain fragments of a Crustacean 

 (figured on our PL XXVIII, figs. 16, 17 and 17 a), from the Upper Old Red Sandstone, 

 Kiltorcan, Co. Kilkenny, Ireland, which he refers doubtfully to E. Scouleri, Hibbert. He 

 was led to this conclusion from a comparison of these fossil-remains with a photograph 

 of the carapace of E. Scouleri in the Andersonian Museum, Glasgow. Mr. Salter calls 

 attention to the curiously reticulato-squamose under- surface (?), with its margin raised into 

 strong suborbicular plicae and elongated tubercles (See PL XXVIII, figs. 17 and 17'«), 

 which he compares with those on the margin of the carapace of E. Scouleri. Prom these 



