Nat. Hist. Aquatic Insects, London, 1895.
For Bibliographic references connected with the divisions of Pyralidae see Ragonot, Ann. Soc. ent. France (6), x. 1890, pp. 458, etc.
Monograph, by Ragonot, in Romanoff, Mem. Lep. vii. 1893.
Ent. Zeit. Stettin, 1878, p. 230.
Howard, Insect Life, vii. 1895, p. 402.