117 
CASSIS bicatenatus. 
TAB. CLI. 
Spec. Chau. 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. ______ 
Between each of the ridges is a flat space rather wider 
than the ridge, in the middle of which is an elevated 
line : the costae 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 Trb 
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 Bucc. bilineatum, see Lister 998 ; it might 
indeed deserve that term as it is bilineatedin 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, tab, 22, of the same formation, are sup- 
posed by some to do. 
VOL. II. 
