1. Dougherty, E. C., and Allen, M. B., Proc. Fifteenth Int. Cong. Zool., Sect. II, paper 33 (1958). Allen, M. B., Proc. Fourth Int. Cong. Biochem., paper 10–27 (1958). Ó hEocha, C., and Ó Reachtaire, M., ibid., paper 11–55.
2. See succeeding communications: Haxo, F. T., and Fork, D. C., Ó hEocha, C., and Raftery, M.
3. Provasoli, L., Boll. Zool. Agrar. Bachicult., 22, 143 (1956[1957]).
4. Provasoli, L., McLaughlin, J. J. A., and Droop, M. R., Arch. Mikrobiol., 25, 392 (1956).
5. Starr, R. C., Lloydia, 19, 129 (1956).