230 Oeological Society, 



PROCEEDINGS OF LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



January 25, 1888.— Prof. J. "W. Judd, F.R.S., 

 President, in the Chair. 



The following communications were read : — 



1. " On Ailuriis angUcus, a new Carnivore from the Red Crag." 

 By Prof. W. Boyd Dawkins, M.A., F.R.S., F.G.S. 



The specimen described is a small fragment of the right lower 

 jaw with the last true molar tooth in position, and belongs to the 

 Crag collection of the Yorkshire Philosophical Society. It differs in 

 a marked degree from all fossil European Carnivores, and presents 

 no important points of difference when compared with a series of 

 jaws of recent Aih(rus. The Author gave a description of the fossil 

 and comparison of it with Ailarus fuhjens, and also a table giving the 

 comparative measurements of the teeth and jaws of the fossil and of 

 recent Ailuri. The species from the Crag was a more powerful 

 animal than any recent Ailuri in the British Museum. The paper 

 concluded with a notice of the range of Ailurus in space and time. 



2. " On two New Lepidotoid Ganoids from the early Mesozoic 

 Deposits of Orange Free State, South Africa." By A. Smith Wood- 

 ward, Esq., F.G.S. 



Of the two species of fishes described in the present paper, one 

 ■was founded on specimens of four individuals brought to England by 

 Dr. H. Exton in 1883, together with the types of Tritylodon and 

 Bhytidosteus, the other on two examples recently received from the 

 same source. Both were from the Stormberg Beds of the Upper 

 Karoo series. 



After giving full details of the structure of both forms, and de- 

 scribing the head and opercular fold, appendicular skeleton and 

 scales in each, the Author showed that one species must be referred 

 to the genus Semionotus, and was most nearly allied to the American 

 types referred by Sir P. Egerton to Ischijpterus. For this species 

 the name of Semionotus capensis was proposed. 



The other species agreed in its characters with the Dapediidae, 

 and was especially allied to the genus Tetrac/onolejns ; but the nearest 

 ally of all was a fish from the Hawkesbury Beds of Australia, CKthro- 

 lepis granulatus. The name of Clithrolepis Extoni was proposed for 

 the new South-African species. 



