original description
Sykes, E. R. (1909). The land and freshwater Mollusca of the Seychelles Archipelago. <em>Transactions of the Linnean Society of London (Zoology).</em> Ser. 2, 13: 57-64., available online at https://www.biodiversitylibrary.org/page/16398966
page(s): 59, fig. 2 [details]
From editor or global species database
Etymology Named for H.P. Thomasset (1862-1949), a planter in the Seychelles, before moving to the Weenen area, in Natal, South Africa. [details]