Yol. XXviii.] PALJiONTOLOGY OF LAIfCASHIRE COAL MEASDEES. 683 



mentioned, it is associated with that of the Middle 

 series. 



The division Vermes is represented by one species which 

 has come up from the Middle Coal Measures and by one 

 species which is new. 



Brachiopoda, Gasteropoda and Cephalopoda are not 

 represented at all. In the case of the first two they are 

 weak throughout the Coal Measures, and the Cephalopoda 

 owe their inclusion in the Middle series entirely to their 

 occurrence in the local and well-known " Marine Band " at 

 Dunkinfield. 



The Pelecypoda of the Middle series mainly belong to the 

 three genera Naiadites, Carbonicoia and Anthracomya, and 

 two of these genera are represented in the Upper Coal 

 Measures. 



The Ostracoda and their allies which are so constant a 

 feature of the uppermost beds of shale and limestone at 

 Slade Lane, Longsight, are closely connected with the 

 genera of Ostracods found in the Middle series, and they 

 also occur in these beds in association with Spirorbis pusillus 

 which is as typical of the Middle series. 



Fishes which were pre-eminent during the period of the 

 Middle Coal Measures, are represented by nine genera and 

 ten species, seven of the latter being most typical Middle 

 Measure forms. Most of these fish remains range on the 

 authority of Salter and Binney into the shales and limestones 

 which lie above the coal seams in the Upper series. 



As an appendix to this paper, we have added a list of all 

 the authentic fossils we know of found in the Lancashire 

 Coal Measures. 



