10 



SUPPLEMENT TO THE 



Coblentzian . 



Ahrian Schist (Dumont) 



Vicht Schist . 



Cultrijugatus-rock , 



Calceola-schist 



Stringocephalus-schist 



Cuboides-limestone 



Goniatites-schist 



Sandy Schists 



Lower Devonian. 



Marl Middle Devonian. 



\ Marly Limestone . 



Upper Devonian. 



I have recognised that the following Eifel Brachiopods occur also in our Devonian 

 rocks : 



? Waldheimia WJiidbornei. 

 Btringocephalus Burtini. 

 Hhynch. parallelepida. 



— cuboides. 



— pugnus. 



— acuminata. 



— triloba. 



— protracta. 



— subreniformis. 

 Camarophoria rhomboidea. 

 Pentamerus biplicatus. 



— hrevirosiris. 

 Atrypa reticularis. 



— aspera. 



— latilinguis. 

 Athyris cencentrica. 

 Kayseria lens. 

 TJncites gryphus. 

 Retzia longirostris. 

 Bifida lepida. 

 Spirifera primava. 



— Icevicosta. 



Spirifera subcuspidata. 



— undifera. 



— curvata. 



— simplex. 



— glabra. 



— lineata. 



— TJrei. 



— Verneuilii. 

 Cyrtina heteroclita. 

 Orthis striatula. 



— tetragona. 



— Eifiiensis. 

 Skenidium areola. 

 StreptorhyncJius nmbraculum. 

 Strophomena rhomboidalis. 



— subarachnoidea. 



— inter strialis. 

 Davidsonia Verneuilii. 

 Chonetes minuta. 



— sarcinulata vel Hardrensis. 

 Strophalosia productoides. 

 Productus subaculeatus. 

 And in all probability several more. 



It may also be useful to here reproduce the list of the Belgian equivalents from a 

 table published by Mr. Grosselet in the ' Annales des Mines,' 6th series, vol. xii, p. 595 : 



