TRANSACTIONS OF SECTION C. 493 
applying the designation ‘forma a’ to those specimens in which the pedicle 
expands suddenly into the body, forming a distinct shoulder in the lower third 
of the body and giving rise to a ‘deformity’ or crumpling in that region; and 
the designation ‘forma 8’ to those in which the pedicle expands more gradually 
into the body, giving to the specimen an ovate contour, with the ‘deformity ’ 
or crumpling in the centre. 
A curious and interesting feature is seen on the outer edge of all specimens 
conforming to ‘forma 8.’ Just before the body contracts to form the beak there 
is found, by examination with the ordinary lens, a minute crenulation or 
crimping of the edge of the fossil, which may be compared with the markedly 
rugose lateral webs seen on the egg-cases of Chimera collei, Rhinochimera, and 
other chimeroids. 
One fresh specimen of Vetacapsula johnsoni (Kidston) has come under notice 
from the Worsborough open works near Barnsley. It is in too crushed and 
imperfect condition to show any new features. 
A new species of Vetacapsula has been recently described by Mr. Good,* from 
Pembrokeshire. It is very similar to Vetacapsula johnsoni, but is extremely 
small, measuring only five millimetres across, whereas Vetacapsula johnsoni 
measures twenty millimetres. 
A new specimen of Fayolia crenulata (Moysey) has been discovered lately 
from a small heap of nodules still remaining from the Shipley claypit. The 
former example from Shipley consisted of the middle portion of the organism 
aleven centimetres long; another specimen, doubtfully referred to Fayolia 
sterzliana (Weiss), from the same locality, was evidently nearing its proximal or 
pedicular termination. The new specimen is of interest mainly because it 
shows the apex or distal termination, which appears to have been dome-shaped. 
The chief feature is the marked exaggeration of the crenulate ‘collerette’ 
which arises from the junction of the two spiral valves, and which forms a sort 
of spiral ‘corona’ round the apex of the fossil, strongly reminiscent of the corona 
at the summit of the egg-case of Cestraceon philippi. 
5. On the Occurrence of a Wind-Worn Rock Surface at Lilleshall Hill, 
Salop, and of Wind-Worn Stones there and elsewhere. By FRANK 
Raw, B.Sc., F.G.S. 
Lilleshall Hill, lying some five miles E.N.E. of Wellington, and extending 
N.E. and S8.W., is a ‘hogsback’ of Uriconian, and is largely bare rock. The 
exposed rock of its S.H. side consists towards the N.K. of very hard halleflintas, 
interstratified with somewhat softer tuff, and to the S.W. of this and opposite 
the Monument of still harder felsite conglomerate and grit. 
Practically the whole of this rock surface has been ground smooth and, 
where hardest, has been highly polished, the smooth surface being traceable 
everywhere except where it has obviously been removed by weathering or 
quarrying. ‘I'he surfaces of projecting masses of the conglomerate are 
perfectly fresh, being ground smooth, deeply fluted, and polished as by wind- 
blown sand, the radiating flutings showing the paths of escape of the prevalent 
wind. To the N.E. the rock surfaces have been much more even, perhaps 
based on a previously glaciated surface, and the flutings are parallel and in 
that direction less and less highly inclined, till at the N.E. end they lie at 
an inclination of 15° to 20° up to the North in North and South planes. 
From the §.W. end of the wind-worn surfaces already described similar 
polishing can be traced across the hill to the N.W. on the steep rock surfaces 
of quartz-veined halleflintas which bound on the §8.W. the highest part of the 
hill. 
South-west of this the crest of the hill is fairly flat and covered with grass. 
Here two reservoirs have been constructed for the Lilleshall water supply, 
and several of the stones thrown out were found to be beautifully wind-worn 
and polished. Two trial excavations made near by yielded a considerable 
proportion of wind-worn stones embedded in fine soft red sand. 
®* R. H. Good, Quart. Journ, Geol. Soc., vol. Ixix., 1913, p. 266, pl. xxx., 
fig. 3. 
