MolluscaBase name details
original description
Preston, H. B. (1907). Descriptions of new species of land and freshwater shells from Central and South America. <em>The Annals and Magazine of Natural History, 7th series.</em> 20(120): 490-498. London. [1 December]., available online at https://www.biodiversitylibrary.org/page/24254358
page(s): 490, fig. 3; note: Original spelling: "Da Costiana". [details]
source of synonymy
Solem, A. (1966). Neotropical land snail genera <i>Labyrinthus</i> and <i>Isomeria</i> (Pulmonata, Camaenidae). <em>Fieldiana: Zoology.</em> 50: 1-226., available online at https://biodiversitylibrary.org/page/2780997
page(s): 75 [details]
From editor or global species database