Hello Bob, The Chondrothyra's are published in "de la Torre & Bartsch", Proceedings U.S.National Museum, vol.85. See: https://books.google.nl/books?id=Z1LPAAAAMAAJ&pg=PA344&lpg=PA344&dq=de+la+Torre+%26+Bartsch+1938&source=bl&ots=PdyA9nKo_v&sig=ACfU3U3sBjX_3tOAU2ol5uoQLyBnVPWX7w&hl=en&sa=X&ved=2ahUKEwiOr_OYsN74AhVByaQKHRgVAc4Q6AF6BAgXEAM#v=onepage&q=de%20la%20Torre%20%26%20Bartsch%201938&f=false It looks like that MolluscaBase hasnĀ“t processed this publication yet. Best regards, Erick Staal ---------------------------------------------------------------------- [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. ----------------------------------------------------------------------