Well good news for a change! The bust of French literary critic Paul Souday is not in fact missing from divisiom 85 in Pere Lachaise. I reported recently that it is gone, which it is, but apparently the cemetery staff removed it for safekeeping, something about it being unstable on its pedestal.
Yesterday (Tuesday) I returned to Montmartre and am now up to division 27. One more trip there and I should be done with my second pass through that cemetery.