282 Reports and Proceedings — Geological Society of London. 



whicli it may rotate. The proximal row of the tarsus is one large 

 bone, formed of the blended astragalus and os calcis. 



In conclusion, the author argues that the points of structure are 

 so few in which Monotreme mammals make a closer approximation 

 to the higher mammals than is seen in this fossil and other Anomo- 

 dontia, that the Monotreme resemblances to fossil reptiles become 

 increased in importance. He believes that a group Theropsida 

 might be made to include Monotremata and Anomodontia, the 

 principal diffex'ences (other than those of the skull) being that 

 Monotremes preserve the marsupial bones and the atlas vertebra. 

 Ornithorhynchus shows pre-froutal and post-frontal bones, and has 

 the malar arch formed as in Anomodonts and some other reptiles. 



2. " On Longrayndian Inliers at Old Eadnor and Huntley 

 (Gloucestershire)." By Charles Callaway, M.A., D.Sc, F.G.S. 



The grits, with some associated slaty bands, forming a ridge near 

 Old Eadnor were considered by Sir Eoderick Murchison to be May 

 Hill Sandstone. The author has discovered that one of the beds of 

 Woolhope Limestone, dipping westward, is crowded with rounded 

 and angular fragments of grit bearing a general resemblance to the 

 arenaceous parts of the Old Eadnor Group. The bedding of the 

 grits is much obscured by crushing, and the rock is sometimes 

 brecciated. Descriptions of microscopic sections of the rock are 

 given in the paper, and the specimens are grits, the materials of 

 which are mainly derived from gneissic and igneous rocks. The 

 unconformity of the grits to the Woolhope Limestone Series, and the 

 dissimilarity of the grits to the May Hill Sandstones of Presteign 

 are the chief facts relied upon by the author to establish the pre- 

 Cambrian age of the Old Eadnor Series ; while the occurrence of 

 the rocks on the strike of the Longmynd, their position with regard 

 to the prolongation of the Church Stretton Fault, and their relations 

 to the Ordovician and Silurian rocks of the area are in favour of 

 a comparison with the Longmyndian rocks. The lithological 

 resemblances between the Old Eadnor Series and the tj'pical 

 Longmyndian are very well marked. Neither the rocks of the 

 Old Eadnor Series nor those of the Woolhope Series are affected 

 by any metamorphic change. 



The grits and shaly beds of Huntley are unlike the May Hill 

 Sandstones of that district, and as they occur along the axis of the 

 anticline, and lithologically resemble the rocks of the Longmynd, it 

 is highly probable that the}'^ also are of Longmyndian age. 



IV.— May 9, 1900.— J. J. H. Teall, Esq., M.A., F.E.S., President, 



in the Chair. The following communications were read : — 

 1. " The Pliocene Deposits of the East of England. Pt. II : 

 The Crag of Essex (Waltonian), and its Eelation to that of Suffolk 

 and Norfolk." By F. W. Harmer, Esq., F.G.S. With a Eeport on 

 the Inorganic Constituents of the Crag by Joseph Lomas, Esq., F.G.S. 

 The term ' Eed Crag,' including, as it does, beds differing con- 

 siderably in age, is vague, and, when we attempt to correlate the 

 East Anglian deposits with those of other countries, inconvenient; 



