Chilonopsis melanioides   (Wollaston)


 
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Melania-like Saint Helena Awl Snail
(Chilonopsis melanioides)

 
syn. Bulimulus melanioides (Smith), Pachygotus melanioides (Dall), Subulina melanioides (Woll.)

 
distribution:

British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha: Saint Helena

 
local name: -

 
size: 0,9 - 1,1 cm (shell)

extinction date: sometimes after 1892 (?)

 
The Melania-like Saint Helena Awl Snail was scientifically described for the first time in the year 1878, when it was not yet extinct.

The snail was found at Saint Helena's highest point, Diana's Peak, in an altitude of about 600 m above sea level.

Even fourteen years later, in the year 1892, the species was mentioned by Edgar A. Smith in its disquisition 'On the Land-Shells of St. Helena.' as living.

 
left:

Melania-like Saint Helena Awl Snail (Chilonopsis melanioides)


Depiction from 'G. W. Tryon; H. A. Pilsbry: Manual of Conchology. Second series: Pulmonata, Vol. 17, 1904-1905'

http://www.biodiversitylibrary.org

 
References:

- Edgar A. Smith: On the Land-Shells of St. Helena. Proceedings of the Zoological Society of London 1892, 258-270