BUCCINUM. WHELK . 
13 
have an obtuse globular tip ; and in a more advanced state 
are thin and transparent. 
Variety. With the undulated ribs nearly obliterated, the 
Strise more distinct and elevated, the larger volution more 
swollen, the outer-lip thin and much expanded, and the 
shell much thinner. 
« Buccinum striatum. Pennant } p. 2/2. pi. 77- Lister , 
pi. 962. f. 15. 
Common on most coasts, v. v. 
3. Buccinum glaciale. Northern Whelk . 
Donovan, pi. 154. 
Shell oblong-oval, taper thin, of a livid-brown color: 
spires eight or nine, a little swollen, finely striate in a cir¬ 
cular manner, and sloping rather suddenly to the line of 
junction, the larger one with a raised circular rib round 
the top, which disappears towards the next, giving it a 
slightly carinated appearance ; they are also slightly ribbed 
longitudinally a little way only beyond the line of separation: 
aperture oval, sometimes a little spread and thickish, finely 
striate: length about two inches. 
Found at”the Orkney Islands : very rare. v. m. 
4. Buccinum carinatum. Carinated Whelk. TiJ ■$*< 
Shell oblong-oval, thin, inflated, marked with very fine 
and regular circular lines, every eighth or tenth of which is 
a little more raised, and crossed by minute irregular longi¬ 
tudinal ones, with a faint appearance of numerous longitu¬ 
dinal rib-like elevations, which however appear only a little 
way beyond the line of separation: spires six or seven, with 
an elevated circular rib at the top of each, from which they 
suddenly slope to the line of junction, appearing as if cari¬ 
nate at the edges of them all, and giving them a very di¬ 
stinct and turrited appearance, not unlike the Murex Tur- 
ricula: the first volution is swollen and rounded on the body 
till it meets the carinated line; but the rest are flattened, 
or not more tumid in the middle than at the ends : aper¬ 
ture dilated; the outer-lip thick at the edge ; inner-lip 
■smooth and spread on the pillar: beak short, somewhat 
jji truncate, and hardly reflected, behind which it is a little 
rugged, with two raised oblique longitudinal ribs : color 
c whitish 
