Baily — On Fossil Plants of KUtorcan. 47 



The upper portion of its branches corresponds with Cyclostigma or 

 Lepidodenclro7i minuta of Dr. Haughton. 



A central axis traverses the whole of the plant, composed of soft 

 tissue, with an open cellular structure, as in Sigillaria and Stigmaria. 



"What I believe to be the roots and rootlets of this species permeate 

 certain beds beneath, just as Stigmaria does the clay immediately under 

 the coal. 



Cone-like bodies are frequent in the same bed ; they somewhat re- 

 semble Lepidostrobus of the coal strata, and are composed of elongated 

 scales, terminating in long linear processes ; these scales show large 

 and very distinct sporules. They are evidently the fruit of a Lycopod, 

 but have never yet been found attached to the Sagenaria, to which it 

 is presumed they belonged. 



A third description of plant, extremely abundant at this place, has 

 been described by Dr. Haughton under the name of Cyclostigma. 

 They usually occur in a fragmentary state, and are much compressed. 

 One of the most important additions to our knowledge of these 

 plants is a specimen in the collection now obtained; this I believe to 

 be a young example of Cyclostigma Kiltorkense. It was found in a layer 

 with Palceopteris mhernicus, about two and a half feet below the 

 commencement of the rock; it shows what has never been met with 

 before, the rounded base, with attached rootlets. The total length of 

 this specimen is two feet three inches, its greatest diameter being one 

 inch and one-eighth. The widely distant stigmse, absence of longitu- 

 dinal rib-like markings, and different character of root, distinguish it 

 essentially from, the Sagenaria, or from Knorria Bailyana, with which 

 some Palseophytologists have sought to identify it. This plant appears 

 to have been less cylindrical than the Sagenaria. I am inclined to 

 believe that the fine specimen in the collection of the Royal Dublin 

 Society, named by M. Adolplie Brongniart Lepidoderidron Griffithsii, is 

 the terminal portion of this species. In the collection made by the 

 Geological Survey, also from this place, there is a similar portion, 

 showing the blunt brush-like apex, the stigma becoming more closely 

 arranged towards the top, and the rigid linear leaves, three or four 

 inches long, spreading out on each side at regularly decreasing intervals 

 from a half to the eighth of an inch. 



The associated animal remains are, of moUusca, one example only, 

 the large bivalve shell named by Professor Forbes Anodonta Juke&ii. 

 Its close resemblance to the recent Anodonta cygnmis, the large fresh- 

 water muscle, common in some of our lakes and rivers, sufficiently 

 justifies its generic alliance, and assists materially in proving the fresh- 

 water origin of the deposit. 



Several species of Crustacea have from time to time been added to 

 the list of fossils found at this place. The late Mr. Salter first indi- 

 cated the probable existence of Eurypterus from a very fragmentary 

 specimen ; this indication I have been enabled to confirm by the dis- 

 covery of better specimens, and have named a species Pterygotus 

 Hilernicus. This Mr. Woodward has since referred to Eurypterus. 



