1. W. Bücherl, E. E. Buckley andV. Deulofeu inVenomous Animals and their Venoms (Eds.W. Bücherl, E. E. Buckley andV. Deulofru; Academic Press, New York, London 1968), Vol. 1, p. 7.
2. L. A. Borradaile andF. A. Potts,The Invertebrata (Cambridge University Press, 1963).
3. F. E. Russell, in:Advances in Marine Biology (Ed.F. S. Russell; Academic Press, New York, London, 1965), Vol. 3, p. 255.
4. A. Pavan andM. V. Dazzini, inChemical Zoology (Eds.M. Florkin andB. T. Scheer; Academic Press, New York, London 1971), Vol. 6, p. 365.
5. H. L. Stahnke,The treatment of Venomous Bites and Stings (Arizona State University Publication 1966).