48 
This differs from Euomphalus Catillus in the much greater 
height of the whorls and their inclined sides, which give it 
the form of a deeply truncated cone or an inverted cup. 
It is a rather a rare shell in the carboniferous limestone of 
Bolland, and also in that of Kildare in Ireland, where it 
acquires a considerable size. 
EUOMPHALUS Pugilis var. bifrons. 
TAB. DCXXXIII — fig. 2. 
Syn. Euomphalus bifrons, Phill. Yorks.pt. 2. 225. 
pi. 13./. 4. Morris. Cat. 144. 
Having examined several individuals of this and the E. 
pugilis (t. 621.), in which the tubercles of the underside are 
various in elevation, I have come to the conclusion that they 
are only varieties of one species. The specimen figured is 
in Mr. Gilbertson’s collection in the British Museum. 
