500 Proceedings of the Royal Physical Society. 



E. Etheridge, jiin. {Quart. Journ. Geol. Soc. for May 1881, 

 xxxiii., 222), from specimens obtained in the Lower Carboni- 

 ferous formation of Berwickshire. The remains indicated, in 

 Mr Etheridge's opinion, a much larger species than F. Scouleri. 

 The specimens from which E. Stevensonii was described were 

 from the collections of the Geological Survey of Scotland, of 

 Mr Stevenson of Duns, and of Mr Smith of Preston farm, 

 Duns. Mr Etheridge supposed that some of the specimens 

 might not be body rings or segments, but portions of the 

 limbs or appendages : this has been settled by Mr Peach 

 joining two of these fragments together, when its character 

 as a limb was manifest. There is exhibited in the Museum 

 of Science and Art, Edinburgh, a head (with several of the 

 body rings attached) of PJ. Scouleri from East Kirkton quarry, 

 Bathgate, which, having the black dormal covering with the 

 peculiar -ornamentation of the family preserved as in life, 

 ought to be figured, as the original specimen described by 

 Dr Scouler, now in the Andersonian Museum, Glasgow, is 

 decorticated, and only the internal cast of the head preserved. 

 Another specimen of a new and undescribed Eurypterid was 

 found by, and is in the possession of, Mr Kobert Dunlop of 

 Whiterigg, Airdrie. Its chief distinction seems to be that 

 the body segments are extremely narrow and ribbon-like. 



With these preliminary remarks I come to the facts which 

 prove the prevalence of Eurypterids in the carboniferous 

 coals and shales. In the paper on Spores, published in our 

 Proceedings for 1886, it is stated that in many of the old 

 soils in which spores had been found, " fragments of Euryp- 

 terid in a perfect state of preservation also occurred, and 

 that in two positions in Joppa quarry several hundreds of 

 such fragments of Eurypterids had been found." Since that 

 statement was made the quest for spores has been greatly 

 extended, and in numerous other localities and positions 

 fragments of Eurypterids have been found. To enumerate 

 all these localities and positions would exceed the space 

 allotted, therefore a few only will be described. But I may 

 state that they range from the lowest beds of the Calciferous 

 Sandstones at the Pans near Crail in Fife, and Cove shore 

 near Cockburnspath, up to the Upper Coal-measures at 



