320 



Field .Vo/fs. 



GEOLOGY. 



Belemnite in Black Flint in East Yorkshire. — During 

 a recent \-isit to Atwick, near Hornsea. I found on the beach 

 a small nodule of black flint, in which was firmly embedded the 

 larger portion of a belemnite {B. lanceolata ?). The Hint itself 

 is of the black type, so familiar to collectors on the East Coast, 

 and it is still questionable as to where it originally came from. 

 Probably the passing of a bygone glacier over some chalk 

 deposit now in the North Sea might account for the presence 

 of the flint in the Holderness district. No similar black flint 

 is to be found in the chalk of the North of England at the present 

 time. The belemnite, around which the concentric layers 

 of flint can be seen, is also commonly met with in the drift of 

 East Yorkshire, and the same species cannot be discovered in 

 the local chalk. As this belemnite was found embedded in the 

 flint, there can be no doubt that both were derived from the 

 same deposit, and thus this specimen is of value in proving the 

 foreign origin of the belemnites so common to the Yorkshire 

 drift. — G. Sheppard, Withernsea, July 4th, 1908. 



— : o : — 



FUNGI. 



Coprinus tigrinellus Boud. in Lincolnshire and 

 Derbyshire. — It may be worth recording that this beautiful 

 little Coprinus has occurred in some abundance both here 

 and in Derbyshire this summer. Here it occurs in an osier 

 plantation on decaying remains of Carex aciitiformis, some- 

 times on decaying sheaths at the base of living plants. Shortly 

 after discovering it, I sent a sketch and spores to Mr. Gibbs, 

 of Derby, and by a most curious coincidence on the very day 

 he received my letter, he came across the same thing while 

 searching for Discomycetes. In this case it giew ' on the 

 decaying leaf-sheaths of living leaves of J uncus articiilatiis in a 

 swampy field by the side of the Derwent, near Ambergate.' It 

 appears to be closely related to Coprinus Friesii Quel., but 

 is easily distinguishable in the field by the dark brown flecks on 

 the top of the pileus. It does not appear to have been 

 previously recorded for Great Britain. For the identification 

 of the species I have to thank Mr. Gibbs. — H. C. Hawley, 

 Boston, Lincolnshire. 



Naturalist. 



