AMMONITES Bechei. 
TAB. CCLXXX. 
Spec. Char. Gibbose, umbilicate, radiated and 
concentrically striated, each side furnished with 
two rows of numerous small tubercles ; radii 
numerous., thin; front rounded ; aperture large. 
-i- he aperture is as wide as long-, and occupies half the 
diameter of the shell ; the sides between the rows of 
tubercles are slightly flattened, the inner row is the 
highest ; the radii are nearly straight, about two to each 
tubercle, and sometimes one between the tubercles ; the 
umbilicus is deep, but not very large ; the striae are very 
regular, elevated, and numerous. 
The specimen before us is in the collection of Mr. Be 
La Beche, whose name I have given to it, as a memorial 
of a stanch and generous friend to science : he obtained it 
from the Blue Lyas at Lyme. I have seen an Ammonite 
with larger tubercles, fewer radii and different formed 
whorls, more resembling Am. Henleyi, tab. 172, but still 
I think distinct from both : had the specimen been suffi- 
ciently perfect I should have been glad to have given a 
figure next to this. It is from the sand beneath the 
inferior Oolite near Cropredy, and belongs to the Oxford 
Museum, presented by the Rev* W. D. Conybeare. 
