PLATE LXI. 



The original shell from which our figures of this species are 

 taken is in the collection of Alexander Mc. Leay, Esq. F. R. S. L. S. 

 and Vice-President of the Horticultural Society, a gentleman to 

 whom in this, as in many other instances, we have to express our 

 thanks for the kind permission with which he has allowed us to enrich 

 our publications with rarities of the first importance, contained in his 

 extensive and invaluable collection. There are a few examples of 

 this shell in the hands of different conchological collectors in this 

 country, but the present, it is believed, may be pronounced the 

 most estimable in point of size, colour, and perfection. It was found 

 by Captain Campbell on the east coast of the Cape of Xjrood Hope, 

 but it is better known as a native of California, in South America. 



That this shell may be found occasionally of a darker colour 

 than the specimen we have represented must be admitted. There 

 is a specimen of it in the conchological department of the Paris 

 Museum, which certainly excels it ; the prevailing tint is decidedly 

 deeper, with the zig-zag lines more distinctly expressed, and also 

 of a darker hue. The species is arranged in their Museum without 

 having any name affixed, and we understood the professors of that 

 department considered it as an undescribed species. Under the 

 persuasion that it may prove a new as well as interesting shell we 

 shall venture to name it Voluta Dufresnii, in compliment to that 

 liberal naturalist Mons. Dufresne of the French Museum, to whom 

 we were indebted for much politeness and attention in several visits 

 we devoted last summer to that establishment, and whose extensive 

 knowledge of Natural History in general, deservedly entitled him to 

 peculiar distinction. 



