Simpson, C. T.
1899. The Pearly Fresh-water Mussels of the United States; their Habits, Enemies, and Diseases; with Suggestions for their Protection. U. S. Fish Comm. Bull. for 1898, Vol. XVIII, pp. 279-288.
Sladen, F. W. L.
1912. The Humble-Bee, its Life-History and how to Domesticate it. pp. 283. London.
A very valuable account of the British species, with numerous suggestions on methods of studying them.
Smallwood, M. E.
1903. The Beach Flea: Talorchestia longicornis. Cold Spring Harbor Monogr. I. pp. 27.
1905. The Salt-Marsh Amphipod: Orchestia palustris. Cold Spring Harbor Monogr. III. pp. 21.
Both of these papers discuss habits and life histories.
Smith, B. G.