[AN] Philosophical Trans. for 1807, p. 242.
[AO] Spectacle de la Nature, tome i.
[AP] Huber on Bees, p. 358.
[AQ] Réaumur, vol. v., p. 380.
[AR] Huber on Bees, p. 368.
[AS] Huber on Bees, p. 220.
[AT] Memoirs of the Wernerian Nat. Hist. Soc., vol. ii. p. 260.
[AU] Bevan on Bees, p. 326.
[AV] Huber on Bees, p. 416.
[AW] Huber on Bees, p. 391.