47 
MUREX Peruvianas. 
TAB. CCCCXXXI V.—fig. L 
Spec. Char. Subfusiform, ventricose, smooth, 
with 15 thin costas ; beak a little recurved. 
1 he length of this Murex is about twice its width ; the 
costae are formed at the sutures ; they are imperfectly 
raised into erect lamellae, and each whorl has about 15 ; 
the beak is long and narrow. 
Where the surface of this crag shell is most perfect, 
there are strong indications of erect lamellae upon the 
sutures, but in general it is so much decayed that there 
are only obtuse costae in their places. It strongly re- 
sembles Murex Bamffius, but has not so many sutures. 
The recent Murex Peruvianus of the Encyclopedic 
M6thodique (Murex Magellanicus b. Lam.) when worn 
differs in no other respect than size, we are of course 
obliged to consider them the same ; the existence of 
fossil shells in the Crag, similar to recent species, has be- 
fore been exemplified in several instances, and shews that 
part of the Crag, at least, is of very recent formation, 
if not alluvial. 
A rare shell found at Woodbridge by Mrs. Cobbold. 
