205 
AMMONITES Stokesi. 
TAB. CXClo 
Spec. Char. Lenticular, depressed, radiated ; ra- 
dii broad, slightly elevated ; inner whorls half 
exposed ; edge crenated ; aperture sagittate. 
XiENGTH of the aperture two-fifths the diameter of the 
last whorl : the radii are little else than almost straight 
radiating undulations ; they are lost near the edge : the 
cast shews some signs of concentric striae upon the surface 
of the shell : the inner edge of the whorl is strongly de- 
fined. 
Of this species I have only seen a cast ; it was lent me 
by the Rev. W. Buckland, who obtained it from a Marie- 
bed, connected with the inferior Oolite, near Bridport in 
Dorset. 
I have the honour of naming this after Charles Stokes, 
Esq. M. G. S. whose acquaintance I have long valued, 
and whose abilities deserve our warm remembrances. 
