Arch. Mus. Paris (2), viii. and ix. 1887.
For classification and monograph of the family, see Régimbart, Ann. Soc. ent. France, 1882, 1883, and 1886. For a catalogue, Séverin, Ann. Soc. ent. Belgique, xxxiii. 1889.
Ann. Soc. ent. France, xxi. 1852, p. 619.
Horn, Tr. Amer. ent. Soc. xv. 1888, p. 23; Riley, Insect Life, i. 1889, p. 300.
Insect Life, i. 1889, pp. 200 and 306.