165 
AMMONITES Woollgari. 
TAB. DLXXXVII.—fg. 1. 
Spec. Cuar. Compressed, carinated, radiated ; 
whorls three or four, the inner ones partly 
concealed ; radii distant, upon the inner whorls 
curved and prominent, each furnished with 
three tubercles, the outer of which is flat and 
small, as the whorls increase the middle row 
of tubercles expands so as nearly to occupy 
the whole ribs and form large blunt spines ; 
keel deeply serrated. 
Syn. A. Woollgari. Mantell, Geol. of Suss. p. 197. 
tab. 21. f. 16. & tab. 22. f. 7. 
A oe 
Tue central whorls of this fossil, separated and com- 
pared with the external one, would never be thought the 
same species; they are compressed, and crossed by pro- 
minent curved rays, while the outer one is ventriccse 
and furnished with about ten large conical spines on 
each side, placed opposite to each other, with one tooth 
of the carina in the middle of each pair: in the smaller 
whorls each ray has a flattened tubercle placed near and 
parallel to the keel ; within this is another smaller tu- 
bercle, which as the whorls proceed is greatly enlarged 
and blended with a third tubercle, that seems gradually 
to recede from the inner edge of the whorl until it is 
lost; the flat tubercle still remains more or less distinct. 
A handsome and scarce shell, peculiar to the Lower 
Chalk near Lewes in Sussex. 
The figure is from the same adult specimen of which 
Mr. Mantell has given a diminished representation in 
his very complete work. I beg to acknowledge his kind- 
ness in allowing me free use of it, as well as of many 
other rare specimens. 
tad 
O60 fr 
