On animals living under stones, logs, and bark of trees.

Diem, K.

1903. Untersuchungen über die Bodenfauna in den Alpen. Jahrb. d. St. Gallischen Naturwiss. Gesellsch. f. 1901-1902, pp. 234-414.

Hamann, O.

1896. Europäische Höhlenfauna. Eine Darstellung der in den Höhlen Europas lebenden Tierwelt mit besonderer Berücksichtigung der Höhlenfauna Krains. pp. 296. Jena.

Motter, M. G.

1898. A Contribution to the Study of the Fauna of the Grave. A Study of One Hundred and Fifty Disinterments, with Some Additional Experimental Observations. Jour. N. Y. Ent. Soc., Vol. VI, pp. 201-231.

A list of invertebrates, snails, crustacea, insects, etc., found in graves. Table compiled from Megnin shows the kinds of animals which invade bodies at the different stages of decay. This is a form of succession comparable to the changes in the animals living in a log at different stages of decay.

Packard, A. S.

1888. The Cave Fauna of North America, with Remarks on the Anatomy of the Brain and Origin of the Blind Species. Memoirs Nat. Acad. Sci., Vol. IV, pp. 1-156.