Helenoconcha pseustes (Smith)

Untrue Saint Helena Snail (Helenoconcha pseustes)

This species was described in 1892 on the basis of subfossil shells that were found on Flagstaff Hill, a mountain on the island of Saint Helena.

The following sentence is a part of its description.:

This species has the spire more elevated and conical than the other species of Patula from the island. P. cutteri, Pfr., may approach it somewhat, but that species is said to have only two parietal lamellae, and two basal denticles near the columella. The present species has an additional basal denticle, and a prominent this palatal lamella, which falls as it were between the two on the inner or parietal side of the aperture.” [1]


syn. Patula pseustes 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