The Collaborative International Dictionary of English v.0.48:

Parhelion \Par*hel"ion\, n.; pl. Parhelia. [L. parelion, Gr.
   ?, ?; para` beside + ? the sun.]
   A mock sun appearing in the form of a bright light, sometimes
   near the sun, and tinged with colors like the rainbow, and
   sometimes opposite to the sun. The latter is usually called
   an anthelion. Often several mock suns appear at the same
   time. Cf. Paraselene.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Anthelion \Ant*hel"ion\ (?; 277, 106), n.; pl. Anthelia.
   [Pref. anti + Gr. ? sun.] (Meteor.)
   A halo opposite the sun, consisting of a colored ring or
   rings around the shadow of the spectator's own head, as
   projected on a cloud or on an opposite fog bank.
   [1913 Webster]