HO 
BUCCINUM tenerum. 
TAB. CCCCLXXXVI — -figs. 3 and 4. 
Spec. Char. Ovate, acute, thin, coarsely striated; 
spire undulated ; beak antiquated ; whorls 
convex. 
Distinguished from Buccinum undatum by the large- 
ness of the striae, the evenness of the last whorls, and by 
the imbricated arched remains of the edges of the suc- 
cessively formed beaks, and sometimes even the whole 
Of the earlier formed lips ; the whorls are also more con- 
vex, and the shell much thinner : in their general aspect 
the two species much resemble each other. 
Met with abundantly in many parts of the Crag; but 
from the thinness and fragile state of the shell, large 
specimens can very rarely be removed from the spot 
upon which they are found. We are indebted to Mrs. 
Cobbold, the Rev. Mr. Leathes, and Mr. W. Phillips, 
for many specimens. 
BUCCINUM unilineatum. 
TAB. CCCCLXXXVI — -Jigs. 5 and 6. 
Spec. Char. Elongated, acute, finely striated ; 
sides straight; beak pointed; a single furrow 
near the upper edge of each whorl. 
A minute shell, whose last whorl is rather ventricose ; 
the aperture is narrow, pointed at both ends; the single 
impressed line that runs round the spire near the upper 
parts of the whorls is remarkable ; the rest of the surface 
is very finely striated. 
One of the many small shells that occur in the Lime- 
stone of AnclifF. 
Fig. 6 is augmented to three times the natural length. 
