PROGNE

Prog "ne, n. Etym: [L., a swallow, traditionally said to be fr. Progne (The sister of Philomela ), who was changed into a swallow, Gr. (Zoöl.) (a ) A swallow. (b ) A genus of swallows including the purple martin. See Martin. (c ) An American butterfly (Polygonia, or Vanessa, Progne ). It is orange and black above, grayish beneath, with an L-shaped silver mark on the hind wings. Called also gray comma.