Morph. Jahrb. xv. 1889, p. 400.
Mem. Soc. phys. Genève, xxv. 1877, and Biol. Centr. Amer. Orthoptera, 1894, p. 198.
The genus Myrmecophila, being exceptional in several respects, is treated separately.
Insectes fossiles des temps primaires, 1893, vol. i. and atlas.
Giebel and Nitzsch, Insecta epizoica, folio, 1874.