VI. Descriptions of New Species of Brachiopoda and 

 Mollusca from the Millstone Grit and Lower 

 Coal Measures of Lancashire. 



By Herbert Bolton, F.R.S.E. 



Received November 19th. Read December 1st, 1896. 



The invertebrate fauna of the millstone-grit and coal- 

 measures of Lancashire has been industriously collected 

 by many local geologists over a considerable number of 

 years, but very little has been done to satisfactorily 

 determine the various collections of fossils. Especially 

 has the group of Mollusca been neglected, and until quite 

 recently it was impossible to decide what forms were 

 clearly recognisable species and what forms were new. 



Dr. Hind's recent " Monograph on Carbonicola, 

 Anthracomya, and Naiadites," published by the Palaeon- 

 tographical Society, has placed these three genera upon 

 a more satisfactory basis; but many other genera of the 

 Pelecypoda, and the whole of the Gastropoda yet remain 

 to be dealt with. 



The accession by gift of the C. Dugdale collection 

 of millstone-grit and coal-measure fossils from the 

 Rossendale area, of the Kay-Shuttleworth collection of 

 fossils from the Burnley coalfield, and by a similar gift 

 from Mr. Robert Cairns, of Ashton-under-Lyne, has 

 caused the collections of the Manchester Museum, Owens 

 College, to be enriched by several new species from 

 the Lancashire coal-measures. It is very desirable that 

 these species should be named and their generic position 

 determined in order that they may be placed in their true 

 position amongst the geological collections of the Museum, 



May 20th, 1897. A 



