Helenoconcha minutissima (Smith)

Dwarf Saint Helena Snail (Helenoconcha minutissima)

The Dwarf Saint Helena Snail was described in 1892 on the basis of subfossil shells that were found at Sugarloaf Ridge on the island of Saint Helena.

The following text is a sentence from the species’ description.:

This species is smaller than P. polyodon, more narrowly umbilicated, has fewer whorls, coarser and more remote striae, and a different armature within the aperture. In full-grown shells there are as many as six parietal lirae, as it were, in two groups of three. They are very fine and extend a long way within. The plicae within the outer lip var apparently from seven to eight to ten or eleven, and some of them are more prominent than others. The red markings take the form of radiating blotches on the upper surface, and more undulating or zigzag streaks beneath.” [2]


syn. Patula minutissima Smith


Depiction from: ‘G. W. Tryon; H. A. Pilsbry; a.o.: Manual of Conchology. Second Series: Pulmonata Vol. 8, Helicidae Vol. 6. 1892’

(public domain)



[1] Edgar A. Smith: On the land-shells of St. Helena. Proceedings of the Zoological Society of London. 1892: 258-270


edited: 29.05.2021