f 
215 
AMMONITES Herveyi. 
TAB. CXCV. 
Spec. Char. Gibbose, umbilicated, radiated ; 
margin of the umbilicus squareish ; radii nu- 
merous, sha rp bi or tri-furcate ; aperture 
lunate, with obtuse angles. 
The inner volutions are almost concealed; the small 
portion that is exposed is seen within a deep umbilicus, 
the sides of which are nearly straight from one whorl to 
another : the radii commence within the umbilicus, and 
having proceeded a small distance over the edge of it, 
and increased in thickness, they divide into two branches, 
and pass over the front, uniting again on the other side : 
it frequently happens, that the branches from one radius, 
instead of uniting again with each other, join the conti- 
guous branches of two radii on the other side : sometimes 
there is a third branch which is free at one end. The 
thickness nearly equals half the diameter. 
The larger specimen was found on the estate of the 
Earl of Bristol, near Spalden, in Lincolnshire : I have 
named if to commemorate the present enquiring and 
penetrating spirit of that noble family. The smaller is 
from Bradford : it has more of the structure of the shell 
remaining : they both appear to be from the lower Oolite. 
The outline is a section of the last whorl. Mr. Cumber- 
land has sent me the same from Knowles Hill, in Somer- 
setshire. 
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