47 



MUREX Peruvianus. 

 TAB. CCCCXXXIV,— /o^. 1. 



Spec. Char. Subfusiform, ventricose, smooth, 

 with 15 thin costae ; beak a little recurved. 



i. HE length of this Murex is about twice its width ; the 

 costiB are formed at the sutures ; they are imperfectly 

 raised into erect lamellae, and each whorl has about 15 j 

 the beak is long and narrow. 



Where the surface of this crag ehell 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 costaa 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 

 diifers 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 leaat, is of very recent formation, 

 if not alluvial. 



A rare shell found at Woodbridge by Mrs. Cobbold/ 



