Ants and fungi.

Judd, S. D.

1901. The Food of Nestling Birds. Yearbook U. S. Dept. Agr. for 1900, pp. 411-436.

Keeble, F.

1910. Plant Animals, A Study of Symbiosis. pp. 163. Cambridge, England.

Kirby, W., and Spence, W.

1859. An Introduction to Entomology; or, Elements of the Natural History of Insects: Comprising an Account of Noxious and Useful Insects, of their Metamorphoses, Food, Stratagems, Habitations, Societies, Motions, Noises, Hybernation, Instinct, Etc., Etc. pp. 607. Seventh edition, London.

Marshall, G. A. K., and others.

1902. Five Years’ Observations and Experiments (1896-1901) on the Bionomics of South African Insects, chiefly directed to the Investigation of Mimicry and Warning Colours. Trans. Ent. Soc., London, 1902, pp. 287-584.

McAtee, W. L.