Black Mass
A writer using the pseudonym "Aubrey Melech" published, in 1986, a Black Mass entirely in Latin, entitled "Missa Niger". (This Black Mass is available on the Internet). Aubrey Melech's Black Mass contains almost exactly the same original Latin phrases as the Black Mass published by LaVey in "The Satanic Rituals". The difference is that the amount of Latin has now more than doubled, so that the entire Black Mass is in Latin. Unlike Coven and Wayne West, LaVey and Melech don't give the source for the Latin material in their Black Mass, merely implying that they received it from someone else, without saying who.