48 
MUREX tortuosus. 
TAR. CCCCXXXIV — -fig, % 
Spec. Char. Turreted, subfusiform, largely 
cancellated ; varies in three tortuose rows, 
with two or three knobs between each ; 
whorls ventricose; beak contracted. 
TPhe three rows of foliaceous sutures, are so much 
curved round the spire, as to produce the appearance of 
four ; they continue along the beak where they are very 
broad ; the three transverse ridges, upon the middle and 
lower parts of the whorls, are equal and not very promi- 
nent ; the fourth, near the upper part of the whorl, is 
large and divided into two or three tubercles between 
each varix, which tubercles extend over one or two of 
the inferior ridges. 
All the specimens of this shell we have met with are 
very much worn ; it is very rare. We are indebted to 
Mrs. Cobbold’s generosity for a finer specimen than 
remains in her own cabinet. 
