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. r. 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. 



: 9. Voluta IsevSs. 'Smooth Volute. 



Donovan, pi. 165. 

 ' Cyprsea 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 Cypra3a, 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 an 

 inch ; breadth three-eighths. 



This species, which is not very uncommon on the western 

 coasts, very much resembles the Voluta rustica of Linne. 

 From V. mercenaria it differs in not being ribbed or strrete, 

 and from V. glabella in wanting the four strong folds on the 

 pillar, v. m. 



10. Voluta 



