bibliotaph or bibliotaphe

“A more pertinent example of the morbid bibliotaph is recorded by Blades; this was the late Sir Thomas Phillipps, of Middle Hill, who acquired *bibliographical treasures simply to bury them*. He bought books by the library, crammed his mansion with them, and *never even saw what he had bought*.” Holbrook Jackson; The Anatomy of Bibliomania; University of Illinois Press; 2001.