374 



At Gji'ernyfydd. (Llandcilo flag.) 



Ampyx nudus. Calj-mene duplicata. 



Ogygia Buchii. Trinucleus fimbriatus. 



Ogygia Portlockii. Trinucleus concentricus. 



At Well field. (Llandeilo flag.) 



Ogygia Buchii. Siphonotreta micula. 



At Pen-cerig. {Llandeilo flag.) 



Ogygia Buchii. Siphonotreta micula. 



Ampyx nudus. Diplograspsus pristis. 



{Upper Llandovery.) 

 Pentamerus oblongus. Orthis radians and a Petraia. 



(Wenlock Shale.) 

 Graptolites Ludensis. 



,, Sedgwickii and an Orthoceras. 



Some interesting plants were found, amongst them conspicuously and 

 abundantly Trollius EuropEeus, Allium Schoenoprasum. Also a few specimens of 

 Botrychium lunare, and several choice species not sufficiently rare to require 

 special mention. Every member who had the good fortune to attend that meet- 

 ing, must have been impressed with the beauty and variety of the striking 

 scenery which had been spread out before him on all sides ; and must have 

 brought away with him a delightful impression of a day most agreeably and 

 profitably spent. In company with some friends I remained behind, to make 

 further acquaintance with the locality, and this afforded me the opportunity of 

 seeing a very fine collection of Silurian fossils, obtained in the district, by Messrs. 

 Powell and Griffiths, of Builth, who have kindly furnished me with a List, a 

 copy of which I now present to you. I cannot leave the subject of the Builth 

 meeting, without congratulating you on the opening out of so fine a field for 

 your future operations. 



Our Second Meeting took place on the 23rd of June. It was well attended 

 and passed off satisfactorily. The members assembled at Abergavenny, and 

 travelled by omnibus up the lovely vale of Usk, to Crickhowell ; there we took 

 to our legs and made excellent use of them in ascending by the Darren, to the 

 Pen-cerig calch, or Table Mountain ; returning by the Crughwel, which gives its 

 name (conspicuous heap) to the Village at its foot— at the Darren we had in 

 v iew a very bold escarpment of the uppermost beds of the Old Red, with its 

 pale yellow Sandstone and purple shaly beds, in both of which we searched, but 

 in vain, for the celebrated Holoptychius scales ; higher up we crossed the 

 Carboniferous Limestone, and at the highest point stood on a platform of Mill- 

 stone Grit, which remains a relic of ancient beds of the Carboniferous series, 

 long since washed away from the mountainous district which- stretches towards 

 the North, the East, and the West, for a considerable distance. Immediately 

 facing us, in a southerly direction and across the lovely Valley of the Usk, rose 

 up the fine bold escarpment of Carboniferous Limestone which forms the 



