Geological Society. 1B5 



yielded to Mr. A. G. Biin L>/ros(iHrui pirlialis, Tiyri^uchui simus, 

 Cynomchus SKp/nxln'f, Scahipusaurus constrictu^, and Dlrynolon leo- 

 niceps. It would thereforu appear to be one of the chief localities for 

 the Lyeosaiiriaii type^* of Thoriojontja and to be on the horizou of 

 the Dii/no loii-hcdi. The recovery of the raissin;? half of the Murray 

 slab, with the evidence of the skull and pelvis which it would give, 

 is to be desired in completion of our knowledge of this fossil animal. 



March 21st, 190U.— H. W. Monckton, Esq., F.L.S., 

 Vice-President, in the Chair. 



The following coraraunication was read : — 



* On a Bird from the Stonesfield Slate.' By Prof. H. G. Seeley, 

 F.K.S., F.L.S., V.P.G.S. 



Daring his're;id?nc;e at Oxford the late Earl of Enniskillen mad© 

 a collection of Oriiitliosaurian bones from Stoncsfiild, which was 

 acquired by the British Museum in 1866. Among these is one 

 identified by the Author in 18*J!) as the right liuraerus of a bird 

 about as large as a flamingo. The bone is complete, except for 

 fracture through the proximil articulation, and the specimen is, on 

 the whole, well preserved. The chief characters available for com- 

 parison are the form of the shaft, the character of the proxim il end, 

 e.^pecially the ulnar tuberosity and the radial crest, and the form of 

 the distal end. The character which first showed the fossil to be a 

 bird was the ulnar tuberosity ; probably the flamingo approaches as 

 closely as any living genus to the Stonesfiold fossil in this feature. 

 The radial crest shows affinities with those of the flamingo and the 

 eider-duck. The impression left by the humero-cabital muscle oa 

 the external surface above the ondyles is almost ide:itical with 

 that seen in the flamingo. 'The varied affinities of this largo 

 Carinate bird appear to lie midway between the ducks and geese oa 

 the one side, and the herons an 1 flamingos on the other. It may 

 be placed in a new family ; but its characters are in all respects 

 such as might have occurred in an existing bird. There is no 

 indication of affinity to the Archmopteryx, or that the bird diverged 

 in any way from modern types.' 



April 2oth, I'JOO.— J. J. H. Teall, Esq, M.A., F.R.S., 

 President, in the Chair. 



The following communication was read : — 



' On a complete Skeleton of an Anomodont Reptile from the 

 Bunter Sandstone of lleichcn, near Basel, giving new Evidence of 

 the Relation of the Anomodontia to the Monotremata.' By Prof. H, 

 G. Seeley, F.K.S., F.L.S., V.P.G.S. 



This skeleton was originally described by Wiedersheim under tho 

 name of Lahyrinthodon liutimeycri in 1S7S. The bones are now 

 differently interpreted : 



