37 
TROCHUS fasciatus. 
TAB. CCXX.--- Fig. 1. 
Spec. Cuar. Conical, umbilicate, decussato-stri- 
ated ; volutions slightly convex, with a band 
around their middle ; base flattish ; aperture 
quadrangular. 
Tue width of the base is equal to the height; the 
transverse striz, or rather ridges, are the most promi- 
nent; the longitudinal ones diverge from the central 
band both ways: the columella seems to have a single 
plait along it, and is tubular. 
In G. W. Braikenridge, Esq.’s cabinet: found in the 
inferior Oolite at Dundry. 
TROCHUS granulatus. 
TAB. CCXX.---Fig. 2. 
Spec. Cuan. Conical, very short, granulated, 
whorls rather convex above, with a band 
along the middle ; base convex, in part nearly 
smooth. 
Tr granulated surface is the result of decussating 
furrows, which vary in depth and number in different 
individuals ; they are generally deepest near the margin: 
the height is about half the width: it appears to have a 
small umbilicus, which probably led Mr. Miller to con- 
sider it an Kuomphalus, from which the columella and 
left lip of the aperture clearly distinguish it. 
In Mr. Miller’s cabinet; from Dundry. 
