138 Reports and Proceedings — 



Geological Society of London. 



L— Jan. 19, 1881.— Robert Etheridge, Esq., F.R.S., President, in 

 the Chair. — The following communications were read : — 



1. " Further Notes on the Family DiastoporidoB, Busk." By G. R. 

 Yine, Esq. Communicated by Prof. P. Martin Duncan, M.B. Lond., 

 F.R.S., F.G.S. 



In continuing his review of the family of the Diastoporidce, the 

 author stated that upon the question of the classification of the 

 Polyzoa he is inclined to accept the views recently published by the 

 Rev. T. Hincks, in preference to the earlier one enunciated by Prof. 

 Busk. He now described the forms found in the Lias and Oolite, 

 including Diastopora stromatoporides, Vine (=: liassica, Quenst.), 

 D. ventricosa, Vine, J), oolitica, Vine, D. cricopora, Vine. 



The author then proceeded to argue against the inclusion of the 

 foliaceous forms in the genus Diastopora, and concluded by giving 

 a definition of the genus, as now limited by himself. 



2. " Further Notes on the Carboniferous Fenestellidse." By G. 

 W. Shrubsole, Esq., F.G.S. 



The author pointed out the discrejDancies in the descriptions given 

 by Lonsdale, Phillips, M'Coy, and King of the genus Feiiestella, as 

 represented in the Silurian, Devonian, Carboniferous, and Permian 

 formations respectively. He then proposed a new definition of his 

 own, and described the following species : — F. pleheia, M'Coy, 

 F. membranacea, Phil., F. nodulosa, Phil., F. polyporata, Phil., F. 

 crassa, M'Coy, F. halkinensis, sp. nov. ; and in conclusion he pointed 

 out that the few species to which he has reduced the Carboniferous 

 FenestellcB find their representatives in the North- American continent, 

 only one really new form, F. Norwoodiana, having been described 

 there. 



II.— February 2, 1881.— Robert Etheridge, Esq., F.R.S., Presi- 

 dent, in the Chair. — The following communications were read : — 



1. " On the Coralliferous Series of Sind, and its connexion with 

 the last Upheaval of the Himalayas." By Prof. P. Martin Duncan, 

 M.B. Lond., F.R.S., F.G.S. 



This communication is the result of the author's study and de- 

 scription of the fossil corals of Sind, undertaken at the request of 

 the Geological Survey of India. The history of the researches in 

 the geology of the Tertiary deposits of Western Sind was noticed in 

 relation to a statement made some years since by the author and 

 Mr. H. M. Jenkins, F.G.S., that there was more than one Tertiary 

 series there, in opposition to both D'Archiac and Haime. 



After a brief description of the geology of the Khirthar and Laki 

 ranges of hills, which were called Hala Mountain by the French 

 geologists, the succession of the stratigraphical series demonstrated 

 by the survey under Blanford and Fedden was given, and the author 

 proceeded to discuss the jjeculiarities of the six coral faunas of the 



