liv DESCRIPTIVE REMARKS. 
the authority of Mr. Etheridge this plant, under the name of Advantites 
EMibernicus, is also stated to occur in the Upper Devonian, Baggy and 
Pilton groups, North Devon, as well as in the Coomhola rocks of Ireland* 
(its occurrence in the latter rocks is not, however, authenticated). In 
the fine-grained and evenly-bedded yellowish sandstone of Kailtorcan, 
county Kilkenny (before alluded to), remains of plants are the prevail- 
ing fossils, which, from the condition of the deposit, are in most beau- 
tiful preservation. The fronds of the magnificent fern Palgopteris 
Hibernicus a much reduced figure of which is shown on Pl. 28, fig. 1, 
is the most abundant of all the fossils; some of its fronds measure five 
feet in length, and are perfectly preserved, from its scaly base to the 
extremity ; it was formerly called Adzantites, when named by Forbes, 
and Cyclopteris by Ad. Brongniart ; the possession of an intermediate 
pair of leaflets between each pinnule, and its peculiar fructification are 
characters which induced Professor Schimper to constitute it the type 
of a new genus, named by him Palgopteris. Fig. 1 a, pl. 28, is re- 
duced to one-sixth of the natural size; 1 6, shows some of the leaflets 
of the natural size, in which the venation is distinctly visible. 
Another abundant plant at this prolific locality has been named by 
the same eminent Botanist, Sagenarva (Knorria) Bailyana. A portion of 
this plant is figured on the same plate, fig. 2 a, reduced to one-third 
of the natural size, and 2 6, a portion of the surface of the natural size. 
This specimen shows the central axis and characters of a Lepidoden- 
driod plant evidently allied to Sigillaria of the Coal Measures, and 
like it having punctated roots with attached rootlets. At 2 ¢, is repre- 
sented a portion of the upper branches of a similar plant, also reduced 
in size; 2d, of the natural size, shows the regularly arranged surface 
markings. On a late visit to this place we were fortunate enough, in 
quarrying, to expose one of these plants, tree-like in size, which 
measured over twenty feet in length, the upper portion branching, and 
again subdividing. 
The plants named Cyclostigma by the Rev. Professor Haughton, 
M.D., are also abundant at Kiltorcan, but are generally more frag- 
mentary; it is probable they all belong to one species to which the 
name of the typical form Cyclostigma Kiltorkense may be applied. 
This plant differs essentially from the previously named species, both 
in the finely striated (not fluted stem as in Sagenaria), and in the 
widely distant cicatrices to which the leaves were attached as well as 
in other particulars. 
Dr. J. W. Dawson, Principal of M‘Gill College, Montreal, has 
described some analogous plants from the Devonian and Lower Carbo- 
niferous formations of Canada.f 
The only Molluscan shell yet discovered in beds considered to be 
* Journal, Geological Society of London, vol. xxiii., p. 616. 
+ See Reports and Papers in Journal, Geological Society of London, 1862-63, 
1871, &c.; and Report to Geological Survey of Canada, on the Fossil Plants of the 
Lower Carboniferous and Millstone Grit Formation of Canada, 1873. 
