117 
CASSIS bicatenatus. 
TAB. CLI. 
Spec. Cuar. Ovate, ventricose, with many de- 
pressed transverse ridges, decussated by small 
longitudinal costae towards the upper parts of 
the whorls ; aperture ovate ; left lip obscurely 
tuberculated. 
Berween each of the ridges is a flat space rather wider 
than the ridge, in the middie of which is an elevated 
line: the coste are most distinct upon the central whorls, 
they give a chain-like appearance to two or three pairs 
of ridges : the aperture is ovate, indented in the upper 
part by the body of the shell; the right lip is thickened 
and crenulated within ; the columella plaited and ex- 
panded into the left lip, which is flat and extended over 
the open umbilicus. 
This prize was found by the Rev. J. Lambert, of 'Tri- 
nity College, in the Crag at Bawdsey, Suffolk. There 
is no doubt of its being a Buccinum of Linn. and a 
Cassis of Lam. Morio of Montft. although the colu- 
mella is plaited. We prefer Cassis, and use it; we 
must confess we have not seen the perfect termination, 
but enough of it is preserved to show what genus it 
belongs to; the dotted outline is added from: Buccinum 
gibbum Linn. which bears a great resemblance to it, as 
does also Buce. bilineatum, see Lister 998; it might 
indeed deserve that term as it is bilineated in some parts. 
This is a curious proof of the antiquity of the forma- 
tion, as it by no means agrees with any of the recent 
shells on our shores as the Murex contrarius tab. 23, and 
Murex striatus, tah. 22, of the same formation, are sup- 
posed by some to do, 
VOL. HI. 7% XX VI) 
