76 
NUMMULARIA elegans. 
TAB. DXXXVIII.—fig. 2. © 
Spec. Cuar. Compressed, smooth ; whorls about 6 ; 
septa gently curved from the axis, numerous ; 
aperture rather prominent. 
Tuus differs from the last in being smaller, in having 
fewer whorls, which increase more rapidly, and in the 
regular curvature of the septa. When young, it is very 
smooth and regularly lenticular. The large figure shows 
several series of diminishing chambers, as mentioned in 
the observations upomthe genus. 
A siliceous stone occurs at Emsworth, near Chiches- 
ter, that contains among other shells an abundance of 
these Nummulites filled also with silex ; the other shells 
are too imperfect to ascertain in our specimens. _ 
It is an intermediate species between Lenticulina and 
Nummulites of Lamarck. 
NUMMULARIA variolaria. 
TAB. DXXXVIII.—fig. 3. 
Spec. Car. Very convex, minute, smooth ; edge 
obtuse, whorls 4 or 5, with about 20 septa * 
‘forming rays near the margin. 
Syn. Lenticulites variolaria. Lam. Env. de Paris, 
168. Mist. Nat. 7. 619. 
Nor above a line in diameter, variable in thickness, but 
always having an obtuse edge; the septa are more or 
less distinguishable upon the surface, according as the 
surface is more or less worn or opaque. 
Found associated in large numbers, sometimes imbed- 
ded in Pyrites, in the lower part of the London Clay, at 
Stubbington, by J. Holloway, Esq. many years ago. 
All the figures but the one in the middle are magnified. 
When the outer whorl is so worn off as to leavea 
portion of the septa, we believe this has been described 
as another species called Lenticulites radians. 
* N. Comptoni, tab. 121, has only one or two whorls and 
about eight septa, and is one of the most remote species from 
Nummularia of Authors. 
