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. Monographic treatment; extensive references to literature. SCOTT, W. 1909. An Ecological Study of the Plankton of Shawnee Cave. With Notes on the Cave Environment. Biol. Bull., Vol. XVII, pp. 386-406. _c. Selected References on Aggregations and Associations_ ADAMS, CHAS. C. 1909. The Coleoptera of Isle Royale, Lake Superior, and their Relation to the North American Centers of Dispersal. Ann. Rep. Mich. Geol. Surv. for 1908, pp. 157-215. On pp. 159-163 the habitats and succession of beetles are briefly discussed. 1909. Notes on Isle Royale Mammals and their Ecological Relations. _Ibid._, pp. 389-422. Brief mention of mammal associations and successions, pp. 390-393. ANTIPA, G. 1912. Die Biologie des Inundationsgebietes der unteren Donau und des Donaudeltas. Verhand. VIII. Inter. Zoöl.-Kongresses zu Graz, 1910, pp.163-208. Description of the biological conditions on the flooded lower Danube and its delta. BAKER, H. B. 1911. Mollusca. pp. 121-176. In A Biological Survey of the Sand Dune Region on the South Shore of Saginaw Bay, Michigan. Ann. Rep. Mich. Board of Geol. and Biol. Survey for 1910. Lansing. Rather full notes on mollusca, grouped by habitats. CHAPMAN, F. M. 1909. The Habitat Groups of North American Birds in the American Museum of Natural History. Am. Mus. Nat. His., Guide Leaflet No. 28. pp. 48. A descriptive illustrated account of the remarkable habitat exhibits in the museum. The most remarkable series of its kind in existence. An excellent example of the educational value of ecological ideas. DAHL, F. 1896. Vergleichende Untersuchungen über die Lebensweise wirbelloser Aasfresser. Sitzungsber. d. K. Akad. Wissen. Berlin, 1896. I, pp. 17-30. A study of carrion-feeding insects by the trapping method. The kinds of insects attracted change with the stage of decay. There is thus a succession. Compare with Moffat’s studies (1898). GATES, F. C. 1911. Summer-bird Life in the Vicinity of Havana, Illinois, in its Relation to the Prominent Plant Associations. Wilson Bulletin, Vol. XXIII, No. 74, pp. 1-27. One of the relatively few associational studies of birds. GIROD, P. 1891. Les Sociétés chez les Animaux. pp. 342. Paris. GLEASON, H. A. 1909. The Ecological Relations of the Invertebrate Fauna of Isle Royale, Michigan. Ann. Rep. Mich. Geo. Surv. for 1908, pp. 57-78. GRABAU, A. U.