1. D. B. Carlisle andF. G. W. Knowles,Endocrine Control in Crustaceans (Univ. Press, Cambridge 1959).
2. J. H. Lockhead andR. Resner, Proc. 15th Int. Cong. Zool.4, 397 (1958).
3. M. Menon,Neurosecretory System of Streptocephalus sp. (Anostraca: Branchiopoda). Neurosecretion, Mem. Soc. Endocrin. (Eds.H. Heller andR. B. Clark; Acad. Press, London, 1962), p. 411.