BUCCINUM. 1F11ELK. 13 



have an obtnse globular tip j and in a more advanced state 

 are thin and transparent. 



Variety. With the undulated ribs nearly obliterated, the 

 striae, 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 Whzlk. 

 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 u little spread and thickish, finely 

 striate : length about two inches. 



Found at the Orkney Islands : very rare. v. m. 



4. Buccinum carinatum. Carinated Whelk. 



Shell oblong-oval, thin, inflated, marked with very line 

 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 

 truncate, and hardly reflected, behind which it is a little 

 iugi>.-d, with two raided oblique longitudinal ribs : color 

 c whitish 



