208 Dr. Wheetton Hind — The Yoredale Series. 



fauna, which, although peculiar with regard to its Laraellibranchs 

 and Gastei'opods, has a plentiful Brachiopod fauna, consisting of 

 typical Carboniferous Limestone forms. The following species have 

 been collected in this quarry by myself: — 



Terebratula hastata. Productus semireticulatus. 

 Spirifer glaber. ,, longispinus. 



,, bisulcatus. ,, cora. 



Athyris planosulcata. ,, scabriculus. 



,, ambigua. Cbonetes Laguessiana. 



Orthis resupinata. Discina nitida. 



Streptorhynchus crenistria. Lingula mytiloides. 



Lamellibranchs. 



Myalina peralata. Edmondia, sp. 



Modiola transversa (Hind). Sanguinolites, sp. 



Nucula gibbosa. Posidoniella semisulcata (Hind) . 



Thei'e are also several forms of Goniatites, Nautilus, Orthoceras, 

 with Gasteropoda and Crustacean reinains, including Dithyrocaris 

 testudineus. It is to be noted that, although the Brachiopoda are 

 Lower Carboniferous forms, the Lamellibranchs are peculiar. 



Many fossils have been obtained from the shales in the neighbour- 

 hood of Todmorden, several of which are to be seen in the Manchester 

 Museum, Owens College. This fauna is a very singular one, and 

 remarkable for the number of species. 



The nomenclature and lists given by authors are, however, not 

 to be trusted, most of the forms having been named by Captain 

 Brown, and the vast number of the names are only synonyms. 

 Still, several forms of Posidoniella are present, of which, after 

 an examination of all the types, fortunately preserved at Owens 

 College, I recognize Posidoniella Icevis (Brown), P. minor (Brown), 

 P. Kirhnani (Brown), P. variabilis (Brown), P. stibquadrata, sp. 

 nov., Avicidopecten papyraceus, Sow., A. fibrillosus, Salter, Nvcula 

 gibbosa, Fleming, JV. csqualis. Sow., Goniatites reticulatus, G. stenolotus, 

 G. carbonarius, G. Listeri, and at least two new species. 



J. W. Davis quotes (" West Yorkshire") four species of Naiitihis, 

 ten species of Goniatites, fourteen species of Orthoceras, together 

 with a very rich Gastei'opod fauna, from the same bed. I am not 

 well enough acquainted with these groups to say anything as to 

 the value of the large number of species here enumerated, but the 

 common Mountain Limestone species are all conspicuously absent. 



With regard to the Brachiopods, only three are mentioned by 

 authors — Orthis resupinata, Productus Martini, and P. antiquatus, 

 Gibson ; but I have not seen these specimens, and from the 

 curious nomenclature nothing can be said at present as to what 

 species occur at Todmorden ; still, the essential fact remains that, 

 on the whole, Brachiopoda are conspicuously absent. 



The shales of Flashy are credited with a long list of Goniatites, 

 among which are G. Listeri, G. Longthorni, and G. reticulatus, all of 

 which occur in the Gannister Series of the Lower Coal-measures. 



Viewing, therefore, as a whole the fauna of these shales, it cannot 



