PLATE XXVI. 



CARBONIFEROUS CRUSTACEA. 



Order — Merostomata. 



Sub- Order — Eurypterida. 



Eight most posterior body-rings of Eurypterus Scouleri, Hibbert ; natural size. (P. 1 36.) 



Fig. 



1. The dorsal surface. 



2. The ventral surface. 



3. The characteristic scale-like ornamentation of the dorsal surface, and the spinous 



border of the segments, magnified. 



4 & 5. The characteristic punctate ornamentation of the ventral surface, and the serrated 

 border of the segments, magnified. 



From the Freshwater Carboniferous Limestone, Burdie House, Edinburgh. 



Coll. of James Powrie, Esq., F.G.S., Reswallie. 



