Seton, Ernest Thompson.
1909. Life Histories of Northern Animals. Vol. I, pp. 673, and Vol. II, pp. 677-1267. New York.
Valuable for life histories and habits. Extensive bibliography.
Severin, H. H. P. and H. C.
1911. An Experimental Study on the Death-Feigning of Belostoma (= Zaitha Aucct.) flumineum Say and Nepa apiculata Uhler. Behavior Monographs, Vol. I, No. 3, pp. 1-44.
Shelford, V. E.
1908. Life-Histories and Larval Habits of the Tiger Beetles (Cicindelidæ). Jour. Linn. Soc. Zoöl., Vol. XXX, pp. 157-184.
Shelford, V. E., and Allee, W. C.
1913. The Reactions of Fishes to Gradients of Dissolved Atmospheric Gases. Jour. Exp. Zoöl., Vol. XIV, pp. 207-266.
The reaction of fish to oxygen and carbonic acid; the latter is considered the best single index to the environment.