@ 75 
MUREX  rugosus 
TAB. XXXIV.—Upper figures. 
Spec. Cuar. Spire acute, of about six whorls, rather 
gibbose, with about ten longitudinal undula- 
tions that intersect many deepish transverse 
strie. Beak nearly straight, lip thick; canal 
rather broad. 
Syn. Murex rugosus. Parkins. Org. Rem. 3. p. 64. 
€,.5..F, 1G: 
"Tue mouth and beak together are about half the length of 
the shell ; the surface is smooth between the striz ; it is a thick 
rugged looking shell, about two inches long and nearly one 
inch wide. 
This shell is said to be one of the rarer productions of the 
Essex cliff; it is also found in the Crag of Suffolk. My 
assiduous friend Mrs. Cobbold sent me two specimens from 
near Ipswich last year, and as they differ a little from each 
other I figure them both: one is broader and shorter than 
the other, and wants the left hand lip which in the other 
spreads over the columella. They are both tender spe- 
cimens, nearly white, with rather less of the ochry stain 
than usual to most of the shelly remains of Suffolk and 
Essex. 
