Shell of Rhiostoma samuiense of “proboscis” morphotype A specimen CUMZ 4712 from Kanchanadit, Surat Thani B–D specimens CUMZ 4713 from Kanchanadit, Surat Thani E specimen CUMZ 4790 from Kanchanadit, Surat Thani F specimen CUMZ 4786 from Sichon, Nakhon Si Thammarat.

 
 
  Part of: Tongkerd P, Tumpeesuwan S, Inkhavilay K, Prasankok P, Jeratthitikul E, Panha S, Sutcharit C (2023) Systematic revision of the snorkel snail genus Rhiostoma Benson, 1860 (Gastropoda, Caenogastropoda, Cyclophoridae) with descriptions of new species. ZooKeys 1142: 1-144. https://doi.org/10.3897/zookeys.1142.90097