[ES] Nat. Hist. of Selborne, vol. i. p. 327.
[ET] Book of Nature, part i. p. 25.
[EU] Hist. Anim. Angliæ, 4to.
[EV] Mémoires, vol. vii. p. 189.
[EW] Spectacle de la Nature, vol. i.
[EX] Book of Nature, part i. p. 25.
[EY] Animal Biography, vol. iii. p. 475, 3rd edition.
[EZ] Brez, Flore des Insectophiles. Notes, Supp. p. 134.
[FA] Thomson’s Ann. of Philosophy, vol. iii. p. 306.
[FB] Loudon’s Mag. of Nat. Hist., vol. i. p. 322.