94 
CIRRUS nodosus. 
TAB. CXLI.—Fig. 2. 
Spec. Cuar. Acutely conical, spire reversed, with 
two obscure transverse carine, upon which are 
numerous longitudinally extended tubercles ; 
aperture orbicular. 
Taere are two rows of tubercles on each whorl, formed 
by the intersection of transverse and longitudinal ridges, 
the upper row is the largest, and the other is inconspi- 
euous: the aperture seems from the cast to have been 
somewhat plaited. 
Dr. Leach, at present so well known for his extensive 
researches into Natural History, some years since pre- 
sented me with this specimen, picked up near Yeovil ; it 
is a reverse shell, and seems to have been gregarious : 
two were here crowded together: there were signs of 
Ammonites in the mass. It has had apparently a very 
acuminated spire, seven turns of which remain, and the 
space above for as many more, according to the general 
proportions. 
CIRRUS plicatus. 
TAS. CRE Figs 3. 
Spec. Cuar. Conical, transversely striated, base 
angular ; sides flattened ; umbilicus plaited or 
deeply striated ; aperture oblong. 
=o tie 
Base rather broader than the height ; the aperture is 
subquadrangular, and wider than it is long. The angu- 
lar form of the outer edge giving a flatness to the cone 
it would form if perfect, will help to distinguish this 
species : the lines of growth are indistinct, the creases or 
plaits in the umbilicus, which is rather small, and looks 
as if formed by the curvature of the shell, are a help to its 
name. 
From Folkstone, by favour of Mr. Gibbs: it has, like 
other productions of that place, some of the original shell 
remaining, which is occasionally finely iridescent ; the 
present is rather chalky, The inside cast is a mixture of 
ironey clay with lime. 
