看这个吧 https://en.wikipedia.org/wiki/D% ... Lj%C3%B3s%C3%A1lfar
But Grimm's "tripartite division" (as Shippey calls it) faced "trouble" in Snorri's statement that dark-elves were pitch-black, as this would lead to the "first reduction" that "dark-elves = black-elves". As a solution, Grimm "pronounce[es] Snorri's statement fallacious", and hypothesizes that "dark elves" were not really 'dark' but rather 'dingy' or 'pale'.[15][19] And while conceding that "such a Trilogy still [lacks] decisive proof,"[20] draws parallels from the white, brown and black subterranean in Pomeranian legend,[20] and the white, pale, and black troops of spirits come to claim souls in the tale of Solomon and Marcolf.[20][21]