SEM of Georissa new species. A–D. G. quinquelirata sp. nov. (Holotype ZRCBUU 0901); E–H. G. kohsichangensis sp. nov. (Holotype ZRCBUU 0903); A, E. Shell; B, F. Protoconch; C, G. Sculpture of protoconch; D, H. Operculum; I–L. G. sagitta sp. nov. (Holotype ZRCBUU 0905); M–P. G. digitinota sp. nov. (Holotype ZRCBUU 0907); I, M. Shell; J, N. Protoconch; K, O. Sculpture of protoconch; L, P. Operculum.

 
 
  Part of: Klongklaew K, Poeaim S, Dumrongrojwattana P (2024) Four new species of Georissa W. Blanford, 1864 (Gastropoda, Hydrocenidae) from Thailand. Zoosystematics and Evolution 100(4): 1347-1360. https://doi.org/10.3897/zse.100.128717