I've found MolluscaBase to be a pretty good guide to molluscan taxonomy. Unless there's a very recent defnitive study that disagrees, I'd go with MolluscaBase. Carl Christensen -----------------------------------------From: "Bob Granda" To: [log in to unmask] Cc: Sent: Monday January 8 2024 9:26:22AM Subject: [CONCH-L] Correct Genus I have two Philippine land shells, portei and turbinoides. Are they Helicostyla or Helicobulinus? Years ago when I obtained them, they were Helicostyla. In a 2022 publication they were Helicobulinus. I may have to verify all my Philippine shells. MolluscaBase has them as Helicostyla. Any help would be appreciated. Best regards, Bob Granda ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/scripts/wa-UGA.exe?SUBED1=conch-l-L&A=1 [1] Type your email address and name in the appropriate box and click leave the list. ---------------------------------------------------------------------- Links: ------ [1] http://listserv.uga.edu/scripts/wa-UGA.exe?SUBED1=conch-l-L&A=1 ---------------------------------------------------------------------- [log in to unmask] - a forum for informal discussions on molluscs To leave this list, click on the following web link: http://listserv.uga.edu/scripts/wa-UGA.exe?SUBED1=conch-l-L&A=1 Type your email address and name in the appropriate box and click leave the list. ----------------------------------------------------------------------