Reports and Proceedings — Geological Society of London. 235 



" Revision " established a new genus, Lanieria ; with this course M. 

 Cotteau fully agrees. The last species may be of Tertiary age, but 

 the others are all Lower Cretaceous. 



Mr. Clark's "Revision" contains a list of the species hitherto 

 described, with short notes on the synonymy. The list includes 43 

 species, of which 19 are new ; several old species are merged as 

 synonyms, and some are abandoned as indeterminable. As Mr. Clark 

 does not accept Roemer's genus Macroster, not one genus in the list 

 is peculiar to America ; while none of the species recorded are found 

 in Europe. Goniopygiis and Botriopygus are now added to the 

 American fauna, and it is interesting to note that the author identifies 

 one species as a Psammechinus. The paper is preliminary to a detailed 

 monograph, and its issue was a very wise course, as in a group in 

 which the literature is so scattered, it was the only means of enabling 

 the work to be made fully complete. J. W. G. 



E-EiPOE-TS j^i:>riD iPK-oGSEXDiisra-s. 



Geological Society of London. 



I— Feb. 25, 1891.— A. Geikie, Esq., LL.D., F.R.S., President, 

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



1. " A Contribution to the Geology of the Southern Transvaal." 

 By W. H. Penning, Esq., F.G.S. 



The following table shows the author's classification of the 

 sedimentary rocks of this region, as compared with those of Messrs. 

 Dunn and Stow and Prof. Rupert Jones : — 



The De Kaap-Valley Beds consist of schists, shales, cherts, and 

 quartzites, with some conglomerates, chloritic and steatitio beds of 

 great thickness, faulted, according to the author, against the granite. 

 They contain a few obscure Corals, and are provisionally referred to 

 the Silurian. 



