252 VOLUTA. VOLUTE . 
length of the shell, a little dilated at the larger end ; the 
outer-lip thin; pillar with four strong folds: length half 
an inch ; breadth not a quarter. 
It something resembles the Bulla cylindracea, but has 
an evident spire, and the aperture is strongly toothed. 
Found at Tenby: very rare. t\ m. 
8 . Voluta catenata. Linked Volute . 
Montagu , pi. 6 . f. 2. 
Shell oblong-oval, strong, semitransparent, indented and 
involute at the base, glossy-white, with the upper volution 
very obtuse and hardly defined, the larger one with four 
transverse bands of opake white oblong spots, connected 
in a chain-like manner by small rufous spots or streaks : 
aperture linear, extending the whole length of the shell; 
the outer-lip thick but not margined, obscurely and finely 
toothed ; pillar with two strong and two faint folds : length 
a quarter of an inch ; breadth an eighth. 
Cornish coast, and North Britain: very rare. t 
9. Voluta laevis. Smooth Volute. 
Donovan , pi. 165. 
Cypraea Voluta. Montagu, pi. 6. f. 7- 
Shell oval, strong, thick, finely polished, white or pale 
green, especially on the back which is gibbous; the base 
obtuse, rounded and a little reflected : spires three hardly 
definable by the separating line, ending rather obtusely; 
the body volution very large, the others short and small: 
aperture linear, reaching nearly the whole length of the 
. shell; the outer-lip much thickened like a Cyprfea, slightly 
margined, a little gibbous in the middle, obscurely toothed 
the whole length, with sometimes a rosy tinge along the 
edge and at both the ends ; inner-lip with two obscure folds, 
and very faintly toothed along the edge : length half aa 
inch ; breadth three-eighths. 
This species, which is not very uncommon on the western 
jeoasts, very much resembles tiie Voluta rustica of Linn& 
From V. mercenaria it differs in not being ribbed or striete, 
and from V. glabella in wanting the four strong folds on the 
pillar, v. in. 
10. Voluta 
