Walsingham, Op. cit., 1889. c. p. 21.
Ent. Zeit. Stettin, lvi. 1895, p. 233.
Op. cit. li. 1890, p. 261.
Ent. Zeit. Stettin, li. 1890, p. 263.
For details as to habits, etc., see Rambur, Ann. Soc. ent. France, v. 1836, p. 577; and Graslin, op. cit. xix. 1850, p. 396.