Reports and Proceedings — Geological Society of London. 41 



Geological Society of Lonbon. 



L— Nov. 12, 1890.— Dr. A. Geikie, F.E.S., President, in the Chair. 

 The President reported that Mr. L. Belinfante had been tem- 

 porarily appointed by the Council to the Office of Assistant- Secretary. 

 The following communications were read : 



1. " On the Porphyritic Rocks of the Island of Jersey." By 

 Prof. A. De Lapparent, Foreign Correspondent of the Society. 

 (Communicated by the President.) 



The author had some years ago described as Permian a series of 

 porphyritic rocks, of which specimens had been sent to him from 

 Jersey. He had since been led to believe that this view of their 

 age, arrived at from what he knew of similar rocks in France, was 

 erroneous, and in a recent visit to the island had satisfied himself 

 that the English observers who had assigned to these rocks a much 

 higher antiquity were in the right. He now found that the igneous 

 rocks in question underlie the Rozel conglomerate, which must be 

 placed at the very base of the Silurian formations. He reserved his 

 detailed statement for a communication to the Geological Society of 

 France ; his present object being to do justice to English geologists, 

 whose views he had formerly opposed. 



2. " On a New Species of Trionyx from the Miocene of Malta, and 

 a Chelonian Scapula from the London Clay." By R. Lydekker, 

 Esq., B.A., F.G.S. 



(i.) The anterior portion of a carapace from the Miocene of Malta 

 exhibits a divided neural between the first pair of costals, as in the 

 Indian species of Trionyx, and in Chitra. The author describes this 

 Maltese fossil, and discusses its relationship to Trionyx and Chitra, 

 and names it Trionyx meJitensis. 



He notes the interest of finding another Oriental form in the 

 Miocene of the Maltese Islands, which has already yielded a species 

 of Tomistoma. 



(ii.) A large scapula from the London Clay of Sheppej'^ is referred 

 to EosfJiargis gigas, and is considered to support Dr. Baur's view as 

 to the intimate affinity between the J)ermochelyid(e and ChelonidcB. 



3. "Notes on Specimens collected by W. Gowland, Esq., F.C.S., 

 in the Korea." By Thomas H. Holland, Esq., of the Geological 

 Survey of India, late Berkeley Fellow of the Owens College. 

 (Communicated by Prof. J. W. Judd, F.R.S., F.G.S.) 



The southern half of Korea traversed by Mr. Gowland is of a 

 hilly character. The rocks forming the hills are chiefly crystalline 

 schists — gneisses with graphite, garnet, dichroite, and fluor occurring 

 in considerable abundance, and the whole group is probably part of 

 the great Archeean mass of North-east China. The author describes 

 these metamorphic rocks in detail. 



Stratified rocks, probably of Carboniferous age, lie nnconformably 

 upon the schists in the south-eastern part of the peninsula, and 

 petrographical notes of these are given in the paper. Through the 



