70 Geological Society. 
only of the corallum, and never by fissiparity as in the type of 
Thecosmilia (namely 7’. trichotoma from the Corallian of Nattheim). 
He remarked upon the characters of the genus Heterogyra, Reuss, 
and its allies, including his new genus Phyllogyra; and further 
indicated that Thamnastrea and allied genera have been removed 
by Milaschewitsch from the Fungid® and placed among the Poritide, 
in consequence of their perforated septa, an alteration in which he 
agreed. 
3. “On the Exploration of two Caves in the Neighbourhood of 
Tenby.” By Ernest L. Jones, Esq. Communicated by Prof. W. 
Boyd Dawkins, F.R.S., F.G.S. 
The caves noticed in this paper were that of Coygan, near 
Laugharne, partially described by Dr. Hicks in the ‘ Geological 
Magazine’ in 1867, and a cave known as Hoyle’s Mouth, reported 
on to the British Association in 1860 by the Rev. Gilbert N. Smith. 
Both caves were rock-fissures. The Coygan cave had been a Hyzna- 
den, as was shown by the deposits of crushed bones and coprolites 
trodden down into a solid mass by the passing of the animals. 
Besides remains of Hyzena, it furnished those of Horse, Mammoth, 
Tichorhine Rhinoceros, Elk, Red Deer, Roe Deer, Reindeer, Cave 
Bear, Cave Lion, Bos primigenius, Wolf, and Fox. The presence of 
Hippopotamus was doubtful. Besides these animals, the presence of 
Paleolithic man in the cave was indicated by some cut bones and by 
two flint-flakes evidently chipped by man. In the second cave, 
Hoyle’s Mouth, the Hyzna, the Cave Bear, &c. were wanting, the 
place of the latter being taken by the common Brown Bear. In oue 
part remains of an old hearth were found ; and the whole contents 
of the fissure pointed to a Neolithic date. At one time the cave 
appears to have been used as a place of sepulture. 
May 24, 1882.—J. W. Hulke, Esq., F.R.S., 
President, in the Chair. 
The following communication was read :— . 
1. “On a remarkable Dinosaurian Coracoid from the Wealden of 
Brook, in the Isle of Wight, preserved in the Woodwardian Museum 
of the University of Cambridge, probably referable to Ornithopsis.” 
By Prof. H. G. Seeley, F.R.S., F.LS., F.G.S., &e. 
The specimen described was obtained in 1866 by Mr. Henry 
Keeping, midway between the fossil forest at Brook Point and Brook 
Chine, about 10 feet above high-water mark. The author stated 
that it was the largest Dinosaurian coracoid known to him, that it 
differed in important characters from that of Iguanodon, and that, of 
described genera, it most probably belonged to Ornithopsis. The 
bone is from the right side, and nearly perfect; its length is abouti 
163 inches, and its greatest breadth about 14 inches; the humeral 
articular surface is nearly 8 inches, and the suture for the scapula 
