1874. Deutschlands Thierwelt nach ihren Standorten eingetheilt. Bd. I, pp. 400; Bd. II, pp. 367 + XXIV. Stuttgart.

A popular account of the fauna of Germany arranged according to habitat. A suggestive book to the student of local associations. Worthy of imitation.

Melander, A. L., and Brues, C. T.

1903. Guests and Parasites of the Burrowing Bee Halictus. Biol. Bull., Vol. V, pp. 1-27.

Gives a diagram of the Halictus biocönose on p. 27.

Hubbard, H. G.

1894. The Insect Guests of the Florida Land Tortoise. U. S. Dept. Agr., Div. Ent., Insect Life, Vol. VI, pp. 302-315.

Hubbard, H. G. (Appendix by Schwarz, E. A.)

1899. Insect Fauna of the Giant Cactus of Arizona: Letters from the Southwest. Psyche, Vol. VIII, Suppl., pp. 1-8, Appendix, pp. 8-14.

Hunter, W. D., Pratt, F. C., and Mitchell, J. D.