Geological Society. 135 
yielded to Mr. A. G. Bain Lycosaurus pardialis, Tigrisuchus simus, 
Cynosuchus suppostus, Scalaposaurus constrictus, and Dicynodon leo- 
niceps. It would therefore appear to be one of the chief localities for 
the Lycosaurian types of Theriodontia and to be on the horizon of 
the Dieynodon-beds. The recovery of the missing 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 2ist, 1900.—H. W. Monckton, Esq., F.L.S., 
Vice-President, in the Chair. 
The following communication was read :— 
‘On a Bird from the Stonesfield Slate.’ By Prof. H. G. Seeley, 
Ue ee ory sk sae 
During his residence at Oxford the late Earl of Enniskillen made 
a collection of Ornithosaurian bones from Stonesfield, which was 
acquired by the British Museum in 1866. Among these is one 
identified by the Author in 1899 as the right humerus of a bird 
about as large as a flamingo. The bone is complete, except for 
fracture through the proximal 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 proximal end, 
especially 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 Stonesficld fossil in this feature. 
The radial crest shows affinities with those of the flamingo and the 
eider-duck. The impression left by the humero-cubital muscle on 
the external surface above the condyles is almost identical with 
that seen in the flamingo. ‘The varied affinities of this large 
Carinate bird appear to lie midway between the ducks and geese on 
the one side, and the herons and 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 Archwopteryw, or that the bird diverged 
in any way from modern types.’ 
April 25th, 1900.—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 Reichen, near Basel, giving new Evidence of 
the Relation of the Anomodontia to the Monotremata.’ By Prof. H, 
G. Seeley, F.R.S., F.L.S., V.P.G.8. 
This skeleton was originally described by Wiedersheim under the 
name of Labyrinthodon Ritimeyeri in 1878. The bones are now 
differently interpreted : 
