47 
furnished to me by Mr, Morris, contains the necessary in- 
formation respecting its geological position. <c E. carbona- 
rius , which is very common in the shales near Glasgow 
and also freo^ently found in the lower limestone shale at 
Denwick Lane near Alnwick, at North Sunderland, and 
Buddie Bay in Northumberland. At the latter locality it 
is associated with Chonetes sarcinulata (Leptcena lata , Sil. 
Syst.) and Possidonomya tuberculata ( Possidonia , Geol. 
Trans. 2nd ser. v. 5.), the shales being considerably altered 
by their proximity to a trap dyke. This species appears 
to be a characteristic shell of the lower carboniferous shales, 
for I believe it has not hitherto been found in any of the 
upper members of the carboniferous system.” 
EUOMPHALUS Calyx. 
TAB. DCXXXIIL— fig. 8, 9 $ 10. 
Spec. Char. Discoid, thick, very concave be- 
neath ; margin broad, inclined upwards, bound- 
ed by two carinas ; aperture triangular, its 
upper edge shortest. 
Syn. Euomphalus Calyx, Phill. Yorks.pt. 2.225. 
pi. 1 S.f.S. Morris , Cat. 144. 
