DUBLIN UNIVEESITY ZOOLOGICAL AND BOTANICAL ASSOCIATION. 265 
• (xi.) 
Plate IX., Figs. 1 and 2.—Side view and cross section of imperfectly 
preserved stem of plant, showing central coaly axis and longitudinal 
striations on external surface; natural size. I cannot refer this plant 
satisfactorily to any known form. It is a cast of the woody axis of some 
form of Lycopodiaceous or Endogenous plant; hut the central tube pre¬ 
sents a structure different from that of any recent forms. The character 
of the external surface of the cast is better seen in Plate XIV., which 
shows the structure of the base of the leaves. 
Locality: Harry lock Bay, county of Wexford. 
Geol. horizon : Yellow sandstone, 880 feet below the lowest bed of 
Carboniferous Limestone. 
(hi.) 
Plate IX., Fig. 3.—Natural size; stem of smaller branch of same 
plant as last, showing bases of leaves at lower portion of external sur¬ 
face. The peculiarity of this specimen consists in the spiral tube, filled 
with coaly matter and peroxide of iron, which twines round the stem, as 
shown in the figure. Professor Phillips, of Oxford, has suggested to me 
that it may (possibly) be the stem of some kind of twining fern, which 
has compressed the stem so closely as to penetrate below the external 
surface. The bases of the spinous leaves are well shown in the figure. 
Locality: Harrylock Bay, county of Wexford. 
Geol. horizon: Same as last. 
(it.) 
Plate XIY.—-Casts of the stems (natural size) of the same plants as 
those figured in Plate IX. Figs. 1 and 2 show the cast of the leaves at their 
insertion into the stem. Fig. 3 shows the raised coaly bases of the spi¬ 
nous, lanceolate leaves themselves. They exhibit but a rude tendency 
towards a spiral arrangement, which may be owing to their very im¬ 
perfect preservation. 
The plants figured in Plates IX. and XIY. are too imperfectly 
preserved to be named, and appear not to have grown in their present 
position, but to have been drifted from a distance. They occur in a 
loose, friable, micaceous, white sandstone, and are accompanied by about 
an inch and half thick of anthracite coal, occasionally passing into an 
ochraceous powder, in which no vegetable structure is visible. 
Locality : Harrylock Bay, county of Wexford. 
Geol. horizon : Yellow sandstone, 380 feet below the Carboniferous 
Limestone. 
Professor J. Beay Greene communicated the results of some obser ¬ 
vations which he had recently made on the genera of British Ophiurida). 
These he proposed on a future occasion to lay fully before the Associa¬ 
tion. 
Professor Harvey read a paper on “ Greyia,” a new genus, allied to 
Brexia, from Port Natal. 
