136 Reports and Proceedings. 



who formerly resided at Lewes) gave a description of the Wealden, 

 Cretaceous, and more recent strata of the Forest-ridge and the sur- 

 rounding country, including the coast. He alluded to the extensive 

 iron-works which once existed in the district, and illustrated his 

 communication by many beautiful specimens from his collection. 



2. " On a New Locality for Paracloxides Davidis and associated 

 fossils in North Wales," by Mr. E. A. Eskrigge, F.G.S. 



In introducing the subject the author referred to the discovery by 

 Mr. Selwyn, more than twenty years back, of a fragment of a large 

 trilobite, apparently identical with the Swedish species Paradoxides 

 Forcliliammeri. But as it could never be satisfactorily determined 

 where this specimen was found, its scientific interest was much 

 lessened if not entirely lost, so that it long remained merely as a 

 challenge to the zeal and activity of geologists, and it was not 

 until 1863 that a true British locality was discovered for the genus. 

 The merit of this discovery is due to the distinguished palceontologist, 

 Mr. Salter, who, perhaps, more than any other deserved such an 

 honour ; and though partly the result of accident, it was also in 

 great measure owing to that scientific acumen and insight which have 

 so often led their possessor into the path of success. The place 

 where it was found, is the now celebrated Porth-y-rhaw, near 

 St. David's, in Pembrokeshire, whence the species has been named 

 Paradoxides Davidis ; and where, owing to the assiduous and able 

 researches of Mr. Hicks and Mr. Salter, so rich a fauna has since been 

 brought to light (see Geological Magazine, Vol. HI. p. 27). 



Within two yeara another locality for Paradoxides was accidentally 

 found by Mr. Eeadwin, of Manchester, at the gold-mines on the 

 river Mawddach, near Dolgelly, a district subsequently well worked 

 by Mr. Williamson ; but neither of these is the place from which 

 Mr. Selwyn's original specimen can have come, for the species are 

 quite distinct. 



This latter locality is on the eastern flank of the great Merioneth 

 anticlinal, and the relation of the beds in which the fossils are 

 found to the underlying Cambrian is identical in North and South 

 Wales ; so that from liis general knowledge of the country Mr. 

 Salter felt convinced that by a patient search on the other or North- 

 Westem side of the Cambrian axis, near the point where the grits 

 dip under the overlying more slaty beds the same fossils would be 

 found. He accordingly wi'ote to Mr. Homfray, of Portadoc, point- 

 ing out a spot, marked Tufarn-helig on the map, as the most likely, 

 and requesting him to institute a careful examination. After two 

 days' work Mr. Homfray vindicated most satisfactorily the correct- 

 ness of Mr. Salter's induction, by finding at the exact spot he had 

 indicated, seven or eight of the characteristic St. David's fossils;, 

 hut not Paradoxides. 



During a recent run through North "Wales, the author of this 

 paper paid a hasty visit to the spot, and notwithstanding that he had 

 to work standing in the bed of a stream, and in the midst of pouring 

 rain, he had the good fortune to detect two distinct and unmistakeable 

 fragments of the Par. Davidis ; one a pleural spine, and the other a 



