Prof. G. Delépine—Faunal Succession, Llantrisant. 67 
Turning now to a comparison of the Radstock and Farrington Series, 
only four out of the fifty species known from the Farrington Series 
are as yet unrecorded from the Radstock Series, which confirms 
Dr. Kidston’s surmise that the two series belong to the same paleo- 
botanical horizon, namely, the Upper Coal-measures. The four plants 
from the Farrington Series which have not yet been definitely found 
to occur in the Radstock Series are the following :— 
Sphenopteris ovatifolia, n.sp. 
Schizopteris lactuca, Presl. 
Lepidodendron ct. Glincanum, Kichwald. 
Sigillaria principis, Weiss. 
But as mentioned above (p. 62), a Sphenopteris, very like S. ovatzfolia, 
has been found in the Radstock Series of Somerset, at Kilmersden, by 
Mr. Arber. 
In conclusion, I would express my special thanks and indebtedness 
to Mr. Arber for suggesting that I should take up the work in the 
first place, and for continued help and advice throughout. Many 
thanks are due to Mr. H. Bolton, F.G.S., of the Bristol Museum, for 
his kindness in handing over to me the petrified material from Staple 
Hill for examination; and to Mr. James McMurtrie, F.G.S., of Bristol, 
for much local help and information. we 
EXPLANATION OF PLATE VII. 
(Photographs by Mr. Arber.) 
Fic. 1. Lepidodendron cf. L. Glincanwm, Kichw. Stem showing two states of 
preservation—(a) shghtly decorticated outer surface showing the. leaf- 
bases, but not the leaf-scars; (6) more decorticated state. x 3. 
No. 2080. Sedgwick Museum, Cambridge. 
>, 2. Thesame. Portion of the slightly decorticated outer surface, showing the 
leaf-bases. x 2. No. 2068. 
Portion of the same stem as Fig. 1, showing two similar states of decortication. 
Sphenopteris ovatifolia, sp. nov. Typical pmne. x 2. No. 2089. 
Sphenopteris ovatifolia, sp. nov. A portionofafrond. x %. No. 2086. 
OV He OO 
er een 
IIJ.—Nore on tHe Fauna Succession 1n THE CAaRBONIFEROUS LIME- 
STONE (AVONIAN) NEAR LLANTRISANT STATION IN THE BRIDGEND 
Area, SourH WaALEs, 
By G. Drxépine, Professor of Geology at the Catholic University, Lille. 
URING the autumn of 1909, I made a short excursion into the 
Bridgend district and examined the Avonian sequence near 
Llantrisant. The present note embodies the results of a few traverses 
and suggests a correlation with the sequence already established at 
other points of the South-West: Province. 
I herewith acknowledge my indebtedness to Dr. A. Vaughan, F.G.S., 
for the loan of specially prepared 6 inch maps, and for help in drawing 
up the faunal lists given below.! 
The strike of the limestone is generally W.S.W. and the dip 
N.N.W.. in the neighbourhood of Llantrisant and Llanharry (see 
} The specific identification is that adopted by Dr. Vaughan in his papers on the 
Avonian. 
