48 



MUREX tortuosus. 



TAB. CCCCXXXIV— /^. 2. 



Spec. Char. Turreted, subfusiform, largely 

 cancellated ; varies in three tortuose rows, 

 with two or three knobs between each ; 

 whorls ventricose ; beak contracted. 



I HE 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 vhorls, 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. 



