1. Acknowledgments. The author thanks D.G. Newman, Wildlife Service, Department of Internal Affairs, Wellington, for the tuatara eggs and information.
2. Dawbin, W.H., in: New Zealand Herpetology, p. 149. Ed. D.G. Newman. New Zealand Wildlife Service, Department of Internal Affairs, Occasional Publication No. 2, Wellington 1982.
3. Newman, D.G., in: New Zealand Herpetology, p. 145. Ed. D.G. Newman. New Zealand Wildlife Service, Department of Internal Affairs, Occasional Publication No. 2, Wellington 1982.
4. Grodzinski, Z., Acta biol. crac.22 (1980) 65.
5. Packard, M.J., Hirsch, K.F., and Meyer-Rochow, V.B., J. Morph.174 (1982) 197.