GEOLOGICAL LOCALITIES. i:> 



any traces of fossil Rhizopoda, but the species obtained represent a fauna of very greit 

 interest. 



The following are the localities : 



128. Carriere du Fond d'Arquet, near Xamnr, Belgium. A package 



of decomposed grey limestone from the Calcaire de Xamur. 



129. Carriere du Fond d'Arquet. .Material of similar character from 



the same locality, marked " -2mc Couche inferieure." 



130. Flemalle, near Liege. Grey, friable, calcareous material from the 



Calcaire de Vise. 



131. Calcaire de Vise. Material from the dressing of the fossils of the 



Ryckholt collection in the Brussels Museum. I owe tin's to the kindness 

 of Prof, de Koninck. 



It remains only to say that the Calcaire de Xamur is chiefly remarkable, from our 

 point of view, as the habitat of the earliest Nummulite and also of the only specimens 

 hitherto found pertaining to any of the Rotalinc genera. It is much to be regretted 

 that the subcrystalline nature of the calcareous rock at every position in which it has 

 been examined microscopically has so obscured the characters of the minute fossils as to 

 render the identification of many of them a matter of difficulty and doubt, and the list 

 of species determinable has been much shortened thereby. The Calcaire de Vise is 

 notable as the only position out of Great Britain in which Saccammina Carteri has been 

 observed. 



RUSSIA. Table V. 



The general classification of the Carboniferous and Permian rocks of Russia seems 

 be as follows : 



"Permian limestone with gypsum and chalky limestone, 

 alternating with Kupfer-Sandstein, of the Province 



Permian. 



of Perm. 



Fresh-water limestone, with gypsum. 

 Pfeffer-Sandstein. 



Coal-measures and Culm. Donetz Coal-field? 



C Chalky limestone with FusuUna ci/llndiica. 

 Carboniferous Limestone, \ , in ., . ... .. 



< White Uolomitic limestone. 



v. Bituminous limestone. 



