232 Reports and Proceedings—Geological Society of London. 
districts shows that, not only were the downward movements of the 
sea-bottom during the first two cycles greater in the south than in the 
north, but also that the axis on which the movement during the first 
cycle hinged was different in direction from the axis during the second 
cycle. The bearing of these movements on the question of the 
delimitation of the divisions of the Avonian is then discussed. They 
suggest that the base of the upper part, C., of the Syringothyris-zone 
should form the base of the Upper Avonian. On the other hand, the 
base of C, in at least two localities is closely connected, faunally, 
with the zones below, whereas the fauna of the main mass of C, passes 
into S, without appreciable change other than the introduction of 
Lithostrotion. It will, therefore, in all probability be decided that 
the break between the Lower and the Upper Avonian should be taken 
at a level within C rather than at the base of the Seminula-zone. 
For the present, however, this question must be deferred, since it 
concerns the whole extent of the formation in Belgium, the North of 
France, and the British Isles. 
The paper concludes with notes on some of the corals and Brachiopods, 
including one new species of coral and two new species and a new 
variety of Brachiopod. 
March 23, 1910.—Professor W. W. Watts, Sc.D., M.Sc., F.R.S., 
President, in the Chair. 
The President referred in sympathetic terms to the recent decease, 
at the age of 98, of Prebendary William Henry Egerton, who had 
been a Fellow of the Society since 1882. 
The following communication was read :— 
‘‘On Paleoxyris and other Allied Fossils from the Derbyshire and 
Nottinghamshire Coalfield.” By Lewis Moysey, B.A., M.B., B.C., 
EGS. 
After reviewing the bibliography of Palg@oxyris, the author records 
the finding of twenty-two specimens from Shipley Clay-pit (Derby- 
shire), and over 130 from Digby Clay-pit (Nottinghamshire), also 
several isolated examples from other localities in the district. 
He describes P. helicteroides (Morris), noting especially the presence 
of a ‘beak’, which had not hitherto been adequately described. 
He then describes P. prendeli (Lesquereux) from Shipley Clay-pit, 
again noticing the formation of the ‘beak’. The discovery of 
P. Johnsoni (Kidston) from Digby is noted, and it is proposed that 
this fossil be removed into the genus Vetacapsula. 
The author also describes a specimen of V. Cooper? (Mackie & Crocker) 
from Newthorpe Clay - pit (Nottinghamshire). He discusses the 
differences between this and other specimens, and Mackie’s type- 
specimen, but considers it unadvisable to multiply species. 
A review of the bibliography of Fayolia is followed by the description 
of a new species from Shipley Clay-pit; also a small compressed 
example is described as near to F. dentata (Renault & Zeiller). The 
author then discusses the distribution of these organisms in time, and 
their possible affinities with the egg-capsules of the Cestracionts and 
the Chimeroids. 
