scapulimancy n.

in anatomy, "shoulder blade," 1570s, Modern Latin, from Late Latin scapula "the shoulder," from Latin scapulae (plural) "shoulders, shoulder blades," perhaps originally "spades, shovels," on the notion of similar shape (or of the animal shoulder blades used as scraping tools in primitive times), from PIE *skap-, variant of *skep- "to cut, scrape" (see scabies).

word-forming element of Greek origin meaning "divination by means of," from Old French -mancie, from Late Latin -mantia, from Greek manteia "oracle, divination," from mantis "one who divines, a seer, prophet; one touched by divine madness," from mainesthai "be inspired," which is related to menos "passion, spirit" (from PIE *mnyo-, suffixed form of root *men- (1) "to think," with derivatives referring to qualities and states of mind or thought). Compare mania.